IEC 60335-2-29:2016

IEC 60335-2-29 ®
Edition 5.0 2016-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-29: Particular requirements for battery chargers

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-29: Exigences particulières pour les chargeurs de batterie

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IEC 60335-2-29 ®
Edition 5.0 2016-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –

Part 2-29: Particular requirements for battery chargers

Appareils électrodomestiques et analogues – Sécurité –

Partie 2-29: Exigences particulières pour les chargeurs de batterie

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.200; 91.180 ISBN 978-2-8322-3424-2

– 2 – IEC 60335-2-29:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 6
1 Scope . 7
2 Normative references. 7
3 Terms and definitions . 8
4 General requirement . 9
5 General conditions for the tests . 9
6 Classification . 9
7 Marking and instructions . 9
8 Protection against access to live parts . 11
9 Starting of motor-operated appliances . 11
10 Power input and current . 11
11 Heating . 11
12 Void . 12
13 Leakage current and electric strength at operating temperature . 12
14 Transient overvoltages. 12
15 Moisture resistance . 12
16 Leakage current and electric strength . 12
17 Overload protection of transformers and associated circuits . 12
18 Endurance . 12
19 Abnormal operation . 12
20 Stability and mechanical hazards . 13
21 Mechanical strength . 13
22 Construction . 14
23 Internal wiring . 14
24 Components . 14
25 Supply connection and external flexible cords . 14
26 Terminals for external conductors . 15
27 Provision for earthing . 15
28 Screws and connections . 15
29 Clearances, creepage distances and solid insulation . 15
30 Resistance to heat and fire . 15
31 Resistance to rusting . 16
32 Radiation, toxicity and similar hazards . 16
Annexes . 17
Annex A (informative) Routine tests . 17
Annex AA (normative) Battery chargers for use by children . 18
Bibliography . 22

Figure 101 – Circuit for testing battery chargers . 16

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –

Part 2-29: Particular requirements for battery chargers

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This part of International Standard IEC 60335 has been prepared by IEC technical committee
61: Safety of household and similar electrical appliances.
This fifth edition cancels and replaces the fourth edition published in 2002 including its
Amendment 1 (2004) and its Amendment 2 (2009). It constitutes a technical revision.
The principal changes in this edition as compared with the fourth edition of IEC 60335-2-29
are as follows (minor changes are not listed):
• Revised the drop test to refer to IEC 60068-2-31 (21.101);
• Requirements for supply cords on battery chargers used at low temperatures (25.7);
• Requirements for battery chargers having an output voltage exceeding SELV have been
added (1, 3.2.2, 3.4.3, 10.101, 24.4, 25.5, 25.7, 25.8, 25.15. 26.5);
• A classification for battery chargers used outdoors has been added (6.2, 29.2);
• Some notes in Clause 1, Subclauses 7.1 and 22.102, Figure 101 and Annex AA 11.8 have
been converted to normative text.

– 4 – IEC 60335-2-29:2016 © IEC 2016
The text of this standard is based on the following documents:
FDIS Report on voting
61/5142/FDIS 61/5173/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the fifth edition (2010) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for battery chargers.
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. When this standard states “addition”, “modification” or “replacement”,
the relevant text in Part 1 is to be adapted accordingly.
NOTE 2 The following numbering system is used:
– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NOTE 4 The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this standard be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.
The following differences exist in the countries indicated below.
– 3.1.9: The artificial load may not be used (USA).
– 11.2: The appliance is not placed in a test corner (USA).

– 21.101: The drop test is carried out differently on outdoor direct plug-in battery chargers (USA).
– 21.102: The test is different (USA).
– 22.26: Basic insulation is allowed between live parts and SELV circuits (USA).
– Annex AA, 11.8: Higher temperature rises are allowed (USA).
– Annex AA, Clause 17: Higher temperature rises are allowed (USA).
– Annex AA, 19.13: Higher temperature rises are allowed (USA).

– 6 – IEC 60335-2-29:2016 © IEC 2016
INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its
provisions is entrusted to appropriately qualified and experienced persons.
This standard recognizes the internationally accepted level of protection against hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in
normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice and takes into account the way in which
electromagnetic phenomena can affect the safe operation of appliances.
This standard takes into account the requirements of IEC 60364 as far as possible so that
there is compatibility with the wiring rules when the appliance is connected to the supply
mains. However, national wiring rules may differ.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as
far as is reasonable. If applicable, the influence of one function on the other is taken into
account.
When a part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is
not necessary to specify particular requirements for the appliance in question over and above the general
requirements.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or part 2 standards.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features that impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of
the requirements and, if found to be substantially equivalent, may be considered to comply
with the standard.
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –

Part 2-29: Particular requirements for battery chargers

1 Scope
This clause of Part 1 is replaced by the following.
This part of IEC 60335 deals with the safety of electric battery chargers for household and
similar use having an output not exceeding 120 V ripple-free direct current, their rated
voltage being not more than 250 V.
Battery chargers intended for charging batteries in a household end use application outside
the scope of the IEC 60335 series of standards are within the scope of this standard.
Requirements for battery chargers for use by children at least 8 years old without supervision
are given in Annex AA.
Battery chargers not intended for normal household use, but which nevertheless may be a
source of danger to the public, such as battery chargers intended for use in garages, shops,
light industry and on farms, are within the scope of this standard.
As far as is practicable, this standard deals with the common hazards presented by
appliances that are encountered by all persons in and around the home. However, in general,
it does not take into account
– persons (including children) whose
• physical, sensory or mental capabilities; or
• lack of experience and knowledge
prevents them from using the appliance safely without supervision or instruction;
– children playing with the appliance.
NOTE 101 Attention is drawn to the fact that
– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be
necessary;
– in many countries additional requirements are specified by the national health authorities, the national
authorities responsible for the protection of labour and similar authorities.
NOTE 102 This standard does not apply to
– built-in battery chargers, except those for installing in caravans and similar vehicles;
– battery chargers that are part of an appliance, the battery of which is not accessible to the user;
– battery chargers intended exclusively for industrial purposes;
– battery chargers intended to be used in locations where special conditions prevail, such as the presence of a
corrosive or explosive atmosphere (dust, vapour or gas);
– battery chargers for emergency lighting (IEC 60598-2-22);
– supply units for electronic equipment.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
– 8 – IEC 60335-2-29:2016 © IEC 2016
IEC 60068-2-6, Environmental testing – Part 2-6: Tests − Test Fc: Vibration (sinusoidal)
IEC 61558-2-7:2007, Safety of power transformers, power supplies, reactors and similar
products − Part 2-7: Particular requirements and tests for transformers and power supplies for
toys
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1.1 Addition:
The rated voltage is the rated input voltage.
3.1.6 Addition:
The rated current is the rated input current.
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions:
Battery chargers for charging lead-acid batteries, and other battery chargers having a rated
DC output current not exceeding 20 A, are connected to the circuit of Figure 101. The
variable resistor is adjusted so that the current in the circuit is the rated DC output current
when the battery charger is supplied at rated voltage.
When the charging current is controlled by the state of charge of the battery, the variable
resistor and the capacitor are replaced by a discharged battery of the type and having the
largest capacity specified in the instructions.
Other battery chargers are connected to a discharged battery of the type and having the
largest capacity specified in the instructions.
3.2.2 Addition:
Output flexible cords are not considered to be interconnection cords.
3.4.3 Replacement:
safety isolating transformer
transformer, the input winding of which is electrically separated from the output winding by an
insulation at least equivalent to double insulation or reinforced insulation, that is intended
to supply a battery charging circuit having an output voltage not exceeding 120 V ripple-free
direct current
Note 1 to entry: Ripple-free means an r.m.s. ripple voltage not exceeding 10 % of the DC component.
3.101
rated DC output voltage
output voltage assigned to the battery charger by the manufacturer
3.102
rated DC output current
output current assigned to the battery charger by the manufacturer

3.103
DC distribution board
panel having circuits for distributing DC power to socket-outlets or terminals
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.2 Addition:
If the test of 21.101 is carried out, two additional battery chargers are required.
5.101 Battery chargers are tested as motor-operated appliances.
6 Classification
This clause of Part 1 is applicable except as follows.
6.2 Addition:
Battery chargers for outdoor use shall be at least IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
Battery chargers shall be marked with
– rated DC output voltage, in volts;
– rated DC output current, in amperes, however no other output current shall be marked;
– the rated current, in amperes, of protective devices incorporated in a DC distribution
board;
– the polarity of the output terminals unless incorrect polarity connection is prevented. The
positive terminal shall be indicated by symbol IEC 60417-5005 (2002-10) and the negative
terminal by symbol IEC 60417-5006 (2002-10);
– the time-current characteristic of fuse-links of the time-lag type;
– the substance of the following, if the output is at least 20 VA:
• before charging, read the instructions;
• for indoor use, or do not expose to rain (unless the battery charger is at least IPX4);
– the substance of the following, if the output is at least 20 VA and the battery charger is for
charging lead-acid batteries:
• disconnect the supply before making or breaking the connections to the battery;
• WARNING: Explosive gases. Prevent flames and sparks. Provide adequate
ventilation during charging.
– 10 – IEC 60335-2-29:2016 © IEC 2016
Battery chargers incorporating an engine-cranking switch that allows the battery charger to
supply a supplementary starting current for the engine shall be marked with
– the maximum "on" time;
– the minimum "off" time or the maximum ratio between the "on" time and the "off" time.
7.4 Addition:
If the battery charger can be adjusted to different rated DC output voltages, the output
voltage to which the battery charger is adjusted shall be clearly discernible.
7.6 Addition:
[symbol IEC 60417-5005 (2002-10)] plus; positive polarity

[symbol IEC 60417-5006 (2002-10)] minus; negative polarity

7.12 Addition:
The instructions shall
– specify the types, the number of batteries and the rated capacity of the batteries that can
be charged;
– include a warning against recharging non-rechargeable batteries;
– state that during charging, the battery must be placed in a well-ventilated area (for
chargers for vented batteries);
– state that the battery charger must only be plugged into an earthed socket-outlet (for
portable class I battery chargers for outdoor use);
– explain the automatic function, stating any limitation (for automatic battery chargers).
The instructions for battery chargers for charging automobile batteries shall include the
substance of the following:
– the battery terminal not connected to the chassis has to be connected first. The other
connection is to be made to the chassis, remote from the battery and fuel line. The battery
charger is then to be connected to the supply mains;
– after charging, disconnect the battery charger from the supply mains. Then remove the
chassis connection and then the battery connection.
7.12.1 Addition:
The instructions for battery chargers for installation in caravans and similar vehicles shall
state that the connection to the supply mains is to be in accordance with the national wiring
rules.
7.101 DC distribution boards shall be marked with
– the maximum output current, in amperes, for each output circuit;
– the types of any additional power supply that may be connected.
Compliance is checked by inspection.
8 Protection against access to live parts
This clause of Part 1 is applicable except as follows.
8.1 Addition:
During insertion or removal of batteries having a battery voltage exceeding 42,4 V, protection
against contact with live parts of the battery or of the battery charger shall be ensured.
9 Starting of motor-operated appliances
This clause of Part 1 is not applicable.
10 Power input and current
This clause of Part 1 is applicable except as follows.
10.101 The no-load DC output voltage shall not exceed 120 V.
Compliance is checked by supplying the battery charger at rated voltage and measuring the
no load DC output voltage.
10.102 The arithmetic mean value of the output current shall not deviate from the rated DC
output current by more than 10 %.
Compliance is checked by connecting the battery charger to the circuit of Figure 101. The
battery charger is supplied at rated voltage and the variable resistor is adjusted to obtain the
rated DC output voltage. The output current is then measured.
11 Heating
This clause of Part 1 is applicable except as follows.
11.2 Modification:
Battery chargers are placed in the test corner as specified for heating appliances.
11.5 Modification:
Battery chargers are only supplied at 1,06 times rated voltage.
11.7 Replacement:
Battery chargers are operated until steady conditions are established.

– 12 – IEC 60335-2-29:2016 © IEC 2016
12 Void
13 Leakage current and electric strength at operating temperature
This clause of Part 1 is applicable.
14 Transient overvoltages
This clause of Part 1 is applicable.
15 Moisture resistance
This clause of Part 1 is applicable.
16 Leakage current and electric strength
This clause of Part 1 is applicable.
17 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable except as follows.
Addition:
The output terminals of the battery charger are short-circuited.
18 Endurance
This clause of Part 1 is not applicable.
19 Abnormal operation
This clause of Part 1 is applicable except as follows.
19.1 Modification:
Instead of the tests specified, battery chargers are subjected to the tests of 19.11, 19.12 and
19.101 to 19.103, as applicable.
19.13 Addition:
During the tests, the values of Table 8 apply.
There shall be no rupture of the battery.
19.101 Battery chargers are supplied at rated voltage and operated under normal
operation, any control that operates during the test of Clause 11 being short-circuited.
19.102 The battery charger is connected to a fully charged battery, the connections being in
reverse to normal use. The battery is to have the largest capacity of the types specified in the

instructions, the capacity of a lead-acid battery, however, being 70 Ah. The battery charger is
operated while supplied at rated voltage.
19.103 Battery chargers intended to be used with a DC distribution board are supplied at
rated voltage and operated under normal operation until steady conditions are established.
The load is increased to raise the output current by 10 % until steady conditions are again
established. This procedure is repeated until the protective device operates or short-circuit
conditions are established.
20 Stability and mechanical hazards
This clause of Part 1 is applicable.
21 Mechanical strength
This clause of Part 1 is applicable except as follows.
21.1 Modification:
The impact energy is increased to 1,0 J ± 0,05 J.
Addition:
Compliance is also checked by the test of 21.101.
21.101 Battery chargers, other than built-in battery chargers, having a mass not exceeding
5 kg are subjected to the test free-fall − procedure 1, of IEC 60068-2-31, which is carried out
on three appliances.
The battery chargers are dropped from a height of 1 m, each appliance being dropped from a
different position.
After the test the battery chargers shall show no damage that could impair compliance with
8.1, 15.1.1, 16.3 and Clause 29.
21.102 Battery chargers for installing in caravans and similar vehicles shall withstand
vibrations to which they may be subjected.
Compliance is checked by carrying out the vibration tests specified in IEC 60068-2-6 under
the following conditions:
– the battery charger is built into an enclosure made from plywood approximately 20 mm
thick, the internal dimensions being the minimum stated in the installation instructions;
– the enclosure is strapped to the vibration generator with the battery charger in its normal
position of use;
– the direction of vibration is vertical;
– the amplitude of vibration is 0,35 mm;
– the sweep frequency range is 10 Hz to 55 Hz;
– the duration of the test is 30 min.
The battery charger shall show no damage that could impair compliance with 8.1, 15.1.1, 16.3
and Clause 29, and connections shall not have worked loose.

– 14 – IEC 60335-2-29:2016 © IEC 2016
22 Construction
This clause of Part 1 is applicable except as follows.
22.26 Replacement:
The output circuit shall be supplied through a safety isolating transformer and shall not be
connected to accessible metal parts or an earthing terminal. The insulation between parts
operating at safety extra-low voltage and live parts shall comply with the requirements for
double insulation or reinforced insulation.
Compliance is checked by inspection and by the tests specified for double insulation or
reinforced insulation.
22.101 Each circuit supplied from a DC distribution board shall incorporate an overload
protective device.
Compliance is checked by inspection.
22.102 Battery chargers for installing in caravans and similar vehicles shall be constructed
so that they can be securely fixed to a support. Keyhole slots, hooks and similar means,
without any further means to prevent the battery charger from being inadvertently lifted off the
support, are not considered to be securely fixed.
Compliance is checked by inspection.
23 Internal wiring
This clause of Part 1 is applicable.
24 Components
This clause of Part 1 is applicable except as follows
24.4 Addition:
The requirement is also applicable to plugs, connectors, socket-outlets and appliance outlets
in the battery charger output circuit.
25 Supply connection and external flexible cords
This clause of Part 1 is applicable except as follows.
25.5 Addition:
The requirement is also applicable to output flexible cords for battery chargers having a rated
output voltage exceeding 42,4 V.
25.7 Addition:
The requirement is also applicable to output flexible cords for battery chargers having a rated
output voltage exceeding 42,4 V.

Battery chargers for charging vehicle batteries shall not be fitted with natural rubber-sheathed
supply cords.
For battery chargers intended for use at low temperatures, the supply cord shall have
properties not less than those specified for ordinary polychloroprene sheathed cords (code
designation 60245 IEC 57).
25.8 Addition:
The requirement is also applicable to output flexible cords for battery chargers having a rated
output voltage exceeding 42,4 V.
25.15 Addition:
The requirement is also applicable to output flexible cords for battery chargers having a rated
output voltage exceeding 42,4 V.
26 Terminals for external conductors
This clause of Part 1 is applicable except as follows.
26.5 Modification:
This requirement does not apply to the terminals of the output circuit having a no-load voltage
not exceeding 42,4 V.
27 Provision for earthing
This clause of Part 1 is applicable.
28 Screws and connections
This clause of Part 1 is applicable.
29 Clearances, creepage distances and solid insulation
This clause of Part 1 is applicable except as follows.
29.2 Addition:
For battery chargers for outdoor use, the microenvironment is pollution degree 3 unless the
insulation is enclosed or located so that it is unlikely to be exposed to pollution during normal
use of the appliance.
30 Resistance to heat and fire
This clause of Part 1 is applicable except as follows.
30.2.2 Not applicable.
– 16 – IEC 60335-2-29:2016 © IEC 2016
31 Resistance to rusting
This clause of Part 1 is applicable.
32 Radiation, toxicity and similar hazards
This clause of Part 1 is applicable.
T
I
A
B C V
R
T
IEC
Key
A mean reading ammeter
B battery charger
I
r
C capacitor having a capacitance, in farads, given by: 12,5
p × f × U
r
where
l = rated DC output current, in amperes;
r
p = 1, for half-wave rectification and 2, for full-wave rectification;
f = supply frequency, in hertz;
U = rated DC output voltage, in volts.
r
I output current
R variable resistor
T output terminals of the battery charger
V mean reading voltmeter
NOTE 1 The capacitor can have a capacitance deviating from the calculated values of ±20 %.
NOTE 2 The capacitor may have to be precharged before the battery charger can operate.
Figure 101 – Circuit for testing battery chargers

Annexes
The annexes of Part 1 are applicable except as follows.
Annex A
(informative)
Routine tests
A.2 Electric strength test
Addition:
An electric strength test is carried out between the input and output circuits, the test voltage
being
– 2 000 V, for battery chargers having a rated voltage not exceeding 150 V;
– 2 500 V, for other battery chargers.

– 18 – IEC 60335-2-29:2016 © IEC 2016
Annex AA
(normative)
Battery chargers for use by children
Battery chargers intended to be used by children at least eight years old without supervision
shall comply with this standard but as modified by this annex. The battery chargers have a
DC output at safety extra-low voltage not exceeding 30 V and a rated output not exceeding
50 VA.
NOTE 1 Battery chargers covered by this annex are not considered to be toys.
NOTE 2 Additional subclauses and notes in the annex are numbered starting with 201.
5 General conditions for the tests
5.201 When batteries are used, the generally available rechargeable batteries giving the
most unfavourable conditions are used.
6 Classification
6.1 Modification:
Battery chargers suitable for outdoor use shall be class III. Other battery chargers shall be
class II or class III.
6.2 Addition:
Battery chargers suitable for outdoor use shall be at least IPX7.
6.201 Enclosures shall be classified at least IP3X with regard to protection against ingress
of solid foreign objects.
Compliance is checked by inspection.
7 Marking and instructions
7.1 Addition:
Battery chargers for indoor use only shall be marked with symbol IEC 60417-5957 (2004-12)
or with the substance of the following:
For indoor use only.
Battery chargers shall be marked with the IP number according to the degree of protection
against ingress of solid foreign objects.
Battery chargers shall be marked with the smiling face symbol together with 8+.

7.6 Addition:
[symbol IEC 60417-5957 (2004-12)]  For indoor use only

Suitable for use by children at least 8
[smiling face]
years old
8+
7.12 Addition:
The instructions shall include the substance of the following:
– CAUTION: Only allow children at least 8 years old to use the battery charger. Give
sufficient instruction so that the child is able to use the battery charger in a
safe way and explain that it is not a toy and must not be played with.
– instruct the child not to try and recharge non-rechargeable batteries because of the
danger of eruption;
– examine the battery charger regularly for damage, especially the cord, plug and enclosure.
If the battery charger is damaged, it must not be used until it has been repaired.
The instructions for class III battery chargers shall state that they must be supplied from a
transformer for toys.
7.14 Addition:
The height of symbols marked on the appliance shall be at least 10 mm. The height of
lettering shall be at least 3 mm.
Compliance is checked by measurement.
8 Protection against access to live parts
8.1.1 Modification:
It shall not be possible to gain access to live parts or to metal parts separated from live
parts by basic insulation only, even after a tool has been used to remove parts of the
enclosure.
Test probe 18 of IEC 61032 is also applied, as specified for test probe B.
10 Power input and current
10.101 Addition:
The output voltage shall not exceed 42,4 V peak.
11 Heating
11.8 Addition:
– 20 – IEC 60335-2-29:2016 © IEC 2016
The temperature rise for the surface of batteries that can be touched by test probe 18 of
IEC 61032 shall not exceed 25 K.
For all other surfaces that can be touched by test probe 18 of IEC 61032 shall not exceed the
following values;
– 25 K, if of metal;
– 35 K, if of other material.
17 Overload protection of transformers and associated circuits
Addition:
The temperature rises of parts that can be touched by test probe 18 of IEC 61032 shall not
exceed the following values:
– 45 K, if of metal;
– 55 K, if of other material.
19 Abnormal operation
19.13 Addition:
The temperature rises of parts that can be touched by test probe 18 of IEC 61032 shall not
exceed the following values
...

IEC 60335-2-29 ®
Edition 5.1 2019-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-29: Particular requirements for battery chargers

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-29: Exigences particulières pour les chargeurs de batterie

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IEC 60335-2-29 ®
Edition 5.1 2019-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –

Part 2-29: Particular requirements for battery chargers

Appareils électrodomestiques et analogues – Sécurité –

Partie 2-29: Exigences particulières pour les chargeurs de batterie

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.200; 97.180 ISBN 978-2-8322-6771-4

IEC 60335-2-29 ®
Edition 5.1 2019-03
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-29: Particular requirements for battery chargers

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-29: Exigences particulières pour les chargeurs de batterie

– 2 – IEC 60335-2-29:2016+AMD1:2019 CSV
© IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General requirement . 9
5 General conditions for the tests . 9
6 Classification . 10
7 Marking and instructions . 10
8 Protection against access to live parts . 12
9 Starting of motor-operated appliances . 12
10 Power input and current . 12
11 Heating . 13
12 Void . 13
13 Leakage current and electric strength at operating temperature . 13
14 Transient overvoltages . 13
15 Moisture resistance . 13
16 Leakage current and electric strength . 13
17 Overload protection of transformers and associated circuits . 13
18 Endurance . 14
19 Abnormal operation . 14
20 Stability and mechanical hazards . 14
21 Mechanical strength . 14
22 Construction . 15
23 Internal wiring . 16
24 Components . 16
25 Supply connection and external flexible cords . 16
26 Terminals for external conductors . 16
27 Provision for earthing . 17
28 Screws and connections . 17
29 Clearances, creepage distances and solid insulation . 17
30 Resistance to heat and fire . 17
31 Resistance to rusting . 17
32 Radiation, toxicity and similar hazards . 17
Annexes . 19
Annex A (informative) Routine tests . 19
Annex AA (normative) Battery chargers for use by children . 20
Annex BB (normative) Isolating transformers . 24
Bibliography . 25

Figure 101 – Circuit for testing battery chargers . 18

© IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –
Part 2-29: Particular requirements for battery chargers
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 60335-2-29 edition 5.1 contains the fifth edition (2016-06) [documents 61/5142/
FDIS and 61/5173/RVD] and its amendment 1 (2019-03) [documents 61/5760/FDIS and
61/5799/RVD].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions are in green text, deletions are in strikethrough
red text. A separate Final version with all changes accepted is available in this
publication.
– 4 – IEC 60335-2-29:2016+AMD1:2019 CSV
© IEC 2019
This part of International Standard IEC 60335 has been prepared by IEC technical
committee 61: Safety of household and similar electrical appliances.
This fifth edition constitutes a technical revision.
The principal changes in this edition as compared with the fourth edition of IEC 60335-2-29
are as follows (minor changes are not listed):
• Revised the drop test to refer to IEC 60068-2-31 (21.101);
• Requirements for supply cords on battery chargers used at low temperatures (25.7);
• Requirements for battery chargers having an output voltage exceeding SELV have been
added (1, 3.2.2, 3.4.3, 10.101, 24.4, 25.5, 25.7, 25.8, 25.15. 26.5);
• A classification for battery chargers used outdoors has been added (6.2, 29.2);
• Some notes in Clause 1, Subclauses 7.1 and 22.102, Figure 101 and Annex AA 11.8 have
been converted to normative text.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the fifth edition (2010) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for battery chargers.
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. When this standard states “addition”, “modification” or “replacement”,
the relevant text in Part 1 is to be adapted accordingly.
NOTE 2 The following numbering system is used:
– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
The committee has decided that the contents of the base publication and its amendment will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
© IEC 2019
NOTE 4 The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this standard be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.
The following differences exist in the countries indicated below.
– 3.1.9: The artificial load may not be used (USA).
– 11.2: The appliance is not placed in a test corner (USA).
– 21.101: The drop test is carried out differently on outdoor direct plug-in battery chargers (USA).
– 21.102: The test is different (USA).
– 22.26: Basic insulation is allowed between live parts and SELV circuits (USA).
– Annex AA, 11.8: Higher temperature rises are allowed (USA).
– Annex AA, Clause 17: Higher temperature rises are allowed (USA).
– Annex AA, 19.13: Higher temperature rises are allowed (USA).

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 6 – IEC 60335-2-29:2016+AMD1:2019 CSV
© IEC 2019
INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its
provisions is entrusted to appropriately qualified and experienced persons.
This standard recognizes the internationally accepted level of protection against hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in
normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice and takes into account the way in which
electromagnetic phenomena can affect the safe operation of appliances.
This standard takes into account the requirements of IEC 60364 as far as possible so that
there is compatibility with the wiring rules when the appliance is connected to the supply
mains. However, national wiring rules may differ.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as
far as is reasonable. If applicable, the influence of one function on the other is taken into
account.
When a part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is
not necessary to specify particular requirements for the appliance in question over and above the general
requirements.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or part 2 standards.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features that impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of
the requirements and, if found to be substantially equivalent, may be considered to comply
with the standard.
© IEC 2019
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –

Part 2-29: Particular requirements for battery chargers

1 Scope
This clause of Part 1 is replaced by the following.
This part of IEC 60335 deals with the safety of electric battery chargers for household and
similar use having an output not exceeding 120 250 V ripple-free direct current, their rated
voltage being not more than 250 V.
Battery chargers intended for charging batteries in a household end use application outside
the scope of the IEC 60335 series of standards are within the scope of this standard.
Requirements for battery chargers for use by children at least 8 years old without supervision
are given in Annex AA.
Battery chargers not intended for normal household use, but which nevertheless may be a
source of danger to the public, such as battery chargers intended for use in garages, shops,
light industry and on farms, are within the scope of this standard.
As far as is practicable, this standard deals with the common hazards presented by
appliances that are encountered by all persons in and around the home. However, in general,
it does not take into account
– persons (including children) whose
• physical, sensory or mental capabilities; or
• lack of experience and knowledge
prevents them from using the appliance safely without supervision or instruction;
– children playing with the appliance.
NOTE 101 Attention is drawn to the fact that
– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be
necessary;
– in many countries additional requirements are specified by the national health authorities, the national
authorities responsible for the protection of labour and similar authorities.
NOTE 102 This standard does not apply to
– built-in battery chargers, except those for installing in caravans and similar vehicles;
– battery chargers that are part of an appliance, the battery of which is not accessible to the user;
– battery chargers intended exclusively for industrial purposes;
– battery chargers intended to be used in locations where special conditions prevail, such as the presence of a
corrosive or explosive atmosphere (dust, vapour or gas);
– battery chargers for emergency lighting (IEC 60598-2-22);
– supply units for electronic equipment.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
– 8 – IEC 60335-2-29:2016+AMD1:2019 CSV
© IEC 2019
IEC 60068-2-6, Environmental testing – Part 2-6: Tests − Test Fc: Vibration (sinusoidal)
IEC 61558-2-4:2009, Safety of transformers, reactors, power supply units and similar products
for supply voltages up to 1 100 V – Part 2-4: Particular requirements and tests for isolating
transformers and power supply units incorporating isolating transformers
IEC 61558-2-7:2007, Safety of power transformers, power supplies, reactors and similar
products − Part 2-7: Particular requirements and tests for transformers and power supplies for
toys
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1 Definitions relating to physical characteristics
3.1.1 Addition:
Note 1 to entry: The rated voltage is the rated input voltage.
3.1.6 Addition:
Note 2 to entry: The rated current is the rated input current.
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions:
Battery chargers for charging lead-acid batteries, and other battery chargers having a rated
DC output current not exceeding 20 A, are connected to the circuit of Figure 101. The
variable resistor is adjusted so that the current in the circuit is the rated DC output current
when the battery charger is supplied at rated voltage.
When the charging current is controlled by the state of charge of the battery, the variable
resistor and the capacitor are replaced by a discharged battery of the type and having the
largest capacity specified in the instructions.
Other battery chargers are connected to a discharged battery of the type and having the
largest capacity specified in the instructions.
3.1.101
rated DC output voltage
output voltage assigned to the battery charger by the manufacturer
3.1.102
rated DC output current
output current assigned to the battery charger by the manufacturer
3.2 Definitions relating to means of connection
3.2.2 Addition:
Output flexible cords are not considered to be interconnection cords.

© IEC 2019
3.4.3 Replacement:
safety isolating transformer
transformer, the input winding of which is electrically separated from the output winding by an
insulation at least equivalent to double insulation or reinforced insulation, that is intended
to supply a battery charging circuit having an output voltage not exceeding 120 V ripple-free
direct current
Note 1 to entry: Ripple-free means an r.m.s. ripple voltage not exceeding 10 % of the DC component.
3.101
rated DC output voltage
output voltage assigned to the battery charger by the manufacturer
3.102
rated DC output current
output current assigned to the battery charger by the manufacturer
3.103
DC distribution board
panel having circuits for distributing DC power to socket-outlets or terminals
3.5 Definitions relating to types of appliances
3.5.101
DC distribution board
panel having circuits for distributing DC power to socket-outlets or terminals
3.5.102
type 1 battery charger
battery charger the output circuit of which is supplied through a safety isolating transformer
3.5.103
type 2 battery charger
battery charger the output circuit of which is supplied through an isolating transformer
3.6 Definitions relating to parts of an appliance
3.6.101
isolating transformer
transformer, the input winding of which is electrically separated from the output winding by an
insulation at least equivalent to double insulation or reinforced insulation, that is intended
to supply a battery charging circuit having an output voltage not exceeding 250 V
ripple-free DC
Note 1 to entry: Ripple-free means an RMS ripple voltage not exceeding 10 % of the DC component.
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.2 Addition:
– 10 – IEC 60335-2-29:2016+AMD1:2019 CSV
© IEC 2019
If the test of 21.101 is carried out, two additional battery chargers are required.
5.101 Battery chargers are tested as motor-operated appliances.
6 Classification
This clause of Part 1 is applicable except as follows.
6.2 Addition:
Battery chargers for outdoor use shall be at least IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
Battery chargers shall be marked with
– rated DC output voltage, in volts;
– rated DC output current, in amperes, however no other output current shall be marked;
– the rated current, in amperes, of protective devices incorporated in a DC distribution
board;
– the polarity of the output terminals unless incorrect polarity connection is prevented. The
positive terminal shall be indicated by symbol IEC 60417-5005 (2002-10) and the negative
terminal by symbol IEC 60417-5006 (2002-10);
– the time-current characteristic of fuse-links of the time-lag type;
– the substance of the following, if the output is at least 20 VA:
• before charging, read the instructions;
• for indoor use, or do not expose to rain (unless the battery charger is at least IPX4);
– “Before charging, read the instructions” or symbol ISO 7000-0790 (2004-01); (not required
if the battery charger output is less than 20 VA);
– “For indoor use” or symbol IEC 60417-5957 (2004-12) or “Do not expose to rain” or symbol
IEC 60417-6062 (2011-05); (not required if the battery charger output is less than 20 VA or
the battery charger has a degree of protection against harmful ingress of water of at least
IPX4);
– the substance of the following, if the output is at least 20 VA and the battery charger is for
charging lead-acid batteries:
• disconnect the supply before making or breaking the connections to the battery;
• WARNING: Explosive gases. Prevent flames and sparks. Provide adequate
ventilation during charging.
Battery chargers incorporating an engine-cranking switch that allows the battery charger to
supply a supplementary starting current for the engine shall be marked with
– the maximum "on" time;
– the minimum "off" time or the maximum ratio between the "on" time and the "off" time.
7.4 Addition:
If the battery charger can be adjusted to different rated DC output voltages, the output
voltage to which the battery charger is adjusted shall be clearly discernible.

© IEC 2019
7.6 Addition:
[symbol IEC 60417-5005 (2002-10)] plus; positive polarity

[symbol IEC 60417-5006 (2002-10)] minus; negative polarity

[symbol IEC 60417-5957 (2004-12)] for indoor use only

[symbol IEC 60417-6062 (2011-05)] do not expose to moisture

7.12 Addition:
The instructions shall
– specify the types, the number of batteries and the rated capacity of the batteries that can
be charged;
– include a warning against recharging non-rechargeable batteries;
– state that during charging, the battery must be placed in a well-ventilated area (for
chargers for vented batteries that release gases into the atmosphere during normal
charging);
– state that the battery charger must only be plugged into an earthed socket-outlet (for
portable class I battery chargers for outdoor use);
– explain the automatic function, stating any limitation (for automatic battery chargers).
The instructions for type 1 battery chargers shall also
– specify the types, the number of batteries and the rated capacity of the batteries that can
be charged;
– include a warning against recharging non-rechargeable batteries.
The instructions for type 2 battery chargers shall also
– specify the batteries intended to be charged, such as by a catalogue number, series
identification or the equivalent;
– specify the ambient temperature range for the charger during charging.
The instructions for battery chargers for charging automobile batteries shall include the
substance of the following:
– the battery terminal not connected to the chassis has to be connected first. The other
connection is to be made to the chassis, remote from the battery and fuel line. The battery
charger is then to be connected to the supply mains;
– after charging, disconnect the battery charger from the supply mains. Then remove the
chassis connection and then the battery connection.

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© IEC 2019
If symbol IEC 60417-5957 (2004-12) or symbol IEC 60417-6062 (2011-05) is used, its
meaning shall be explained.
7.12.1 Addition:
The instructions for battery chargers for installation in caravans and similar vehicles shall
state that the connection to the supply mains is to be in accordance with the national wiring
rules.
7.101 DC distribution boards shall be marked with
– the maximum output current, in amperes, for each output circuit;
– the types of any additional power supply that may be connected.
Compliance is checked by inspection.
8 Protection against access to live parts
This clause of Part 1 is applicable except as follows.
8.1 Addition:
During insertion or removal of batteries having a battery voltage exceeding 42,4 V, protection
against contact with live parts of the battery or of the battery charger shall be ensured.
8.1.4 Addition:
For type 2 battery chargers, voltages and currents are also measured between relevant
accessible parts of opposite polarity.
9 Starting of motor-operated appliances
This clause of Part 1 is not applicable.
10 Power input and current
This clause of Part 1 is applicable except as follows.
10.101 The no-load DC output voltage of type 1 battery chargers shall not exceed 120 V.
The DC output voltage of type 2 battery chargers shall not exceed 250 V.
Compliance is checked by supplying the battery charger at rated voltage and measuring the
no load DC output voltage.
10.102 The arithmetic mean value of the output current shall not deviate from the rated DC
output current by more than 10 %.
For type 1 battery chargers, the arithmetic mean value of the output current shall not deviate
from the rated DC output current by more than 10 %.
For type 2 battery chargers, the arithmetic mean value of the output current shall not exceed
the rated DC output current by more than 10 %.

© IEC 2019
Compliance is checked by connecting the battery charger to the circuit of Figure 101. The
battery charger is supplied at rated voltage and the variable resistor is adjusted to obtain the
rated DC output voltage. The output current is then measured. A battery of the largest
voltage and a battery with the largest capacity (if different) for each battery chemistry may be
used instead of the circuit of Figure 101.
11 Heating
This clause of Part 1 is applicable except as follows.
11.2 Modification:
Battery chargers are placed in the test corner as specified for heating appliances.
11.5 Modification:
Battery chargers are only supplied at 1,06 times rated voltage.
11.7 Replacement:
Battery chargers are operated until steady conditions are established.
12 Void
13 Leakage current and electric strength at operating temperature
This clause of Part 1 is applicable.
14 Transient overvoltages
This clause of Part 1 is applicable.
15 Moisture resistance
This clause of Part 1 is applicable.
16 Leakage current and electric strength
This clause of Part 1 is applicable.
17 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable except as follows.
Addition:
The output terminals of the battery charger are short-circuited.

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© IEC 2019
18 Endurance
This clause of Part 1 is not applicable.
19 Abnormal operation
This clause of Part 1 is applicable except as follows.
19.1 Modification:
Instead of the tests specified, battery chargers are subjected to the tests of 19.11, 19.12 and
19.101 to 19.103, as applicable.
19.13 Addition:
During the tests, the values of Table 8 apply.
There shall be no rupture of the battery.
19.101 Battery chargers are supplied at rated voltage and operated under normal
operation, any control that operates during the test of Clause 11 being short-circuited.
19.102 The battery charger is connected to a fully charged battery, the connections being in
reverse to normal use. The battery is to have the largest capacity of the types specified in the
instructions, the capacity of a lead-acid battery, however, being 70 Ah. The battery charger is
operated while supplied at rated voltage.
19.103 Battery chargers intended to be used with a DC distribution board are supplied at
rated voltage and operated under normal operation until steady conditions are established.
The load is increased to raise the output current by 10 % until steady conditions are again
established. This procedure is repeated until the protective device operates or short-circuit
conditions are established.
20 Stability and mechanical hazards
This clause of Part 1 is applicable.
21 Mechanical strength
This clause of Part 1 is applicable except as follows.
21.1 Modification:
The impact energy is increased to 1,0 J ± 0,05 J.
Addition:
Compliance is also checked by the test of 21.101.
21.101 Battery chargers, other than built-in battery chargers, having a mass not exceeding
5 kg are subjected to the test free-fall − procedure 1, of IEC 60068-2-31, which is carried out
on three appliances.
© IEC 2019
The battery chargers are dropped from a height of 1 m, each appliance being dropped from a
different position.
After the test the battery chargers shall show no damage that could impair compliance with
8.1, 15.1.1, 16.3 and Clause 29.
21.102 Battery chargers for installing in caravans and similar vehicles shall withstand
vibrations to which they may be subjected.
Compliance is checked by carrying out the vibration tests specified in IEC 60068-2-6 under
the following conditions:
– the battery charger is built into an enclosure made from plywood approximately 20 mm
thick, the internal dimensions being the minimum stated in the installation instructions;
– the enclosure is strapped to the vibration generator with the battery charger in its normal
position of use;
– the direction of vibration is vertical;
– the amplitude of vibration is 0,35 mm;
– the sweep frequency range is 10 Hz to 55 Hz;
– the duration of the test is 30 min.
The battery charger shall show no damage that could impair compliance with 8.1, 15.1.1, 16.3
and Clause 29, and connections shall not have worked loose.
22 Construction
This clause of Part 1 is applicable except as follows.
22.26 Replacement:
The output circuit of a type 1 battery charger shall be supplied through a safety isolating
transformer and shall not be connected to accessible metal parts or an earthing terminal.
The insulation between parts operating at safety extra-low voltage and live parts shall
comply with the requirements for double insulation or reinforced insulation.
The output circuit of a type 2 battery charger shall be supplied through an isolating
transformer and shall not be connected to accessible metal parts or an earthing terminal.
The insulation between parts operating at safety extra-low voltage and live parts shall
comply with the requirements for double insulation or reinforced insulation.
Compliance is checked by inspection and by the tests specified for double insulation or
reinforced insulation.
22.101 Each circuit supplied from a DC distribution board shall incorporate an overload
protective device.
Compliance is checked by inspection.
22.102 Battery chargers for installing in caravans and similar vehicles shall be constructed
so that they can be securely fixed to a support. Keyhole slots, hooks and similar means,
without any further means to prevent the battery charger from being inadvertently lifted off the
support, are not considered to be securely fixed.
Compliance is checked by inspection.

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© IEC 2019
23 Internal wiring
This clause of Part 1 is applicable.
24 Components
This clause of Part 1 is applicable except as follows
24.1.2 Addition:
The relevant standard for isolating transformers is IEC 61558-2-4. If they have to be tested,
they are tested in accordance with Annex BB.
24.4 Addition:
The requirement is also applicable to plugs, connectors, socket-outlets and appliance outlets
in the battery charger output circuit.
25 Supply connection and external flexible cords
This clause of Part 1 is applicable except as follows.
25.5 Addition:
The requirement is also applicable to output flexible cords for battery chargers having a rated
output voltage exceeding 42,4 V.
25.7 Addition:
The requirement is also applicable to output flexible cords for battery chargers having a rated
output voltage exceeding 42,4 V.
Battery chargers for charging vehicle batteries shall not be fitted with natural rubber-sheathed
supply cords.
For battery chargers intended for use at low temperatures, the supply cord shall have
properties not less than those specified for ordinary polychloroprene sheathed cords (code
designation 60245 IEC 57).
25.8 Addition:
The requirement is also applicable to output flexible cords for battery chargers having a rated
output voltage exceeding 42,4 V.
25.15 Addition:
The requirement is also applicable to output flexible cords for battery chargers having a rated
output voltage exceeding 42,4 V.
26 Terminals for external conductors
This clause of Part 1 is applicable except as follows.

© IEC 2019
26.5 Modification:
This requirement does not apply to the terminals of the output circuit having a no-load voltage
not exceeding 42,4 V.
27 Provision for earthing
This clause of Part 1 is applicable.
28 Screws and connections
This clause of Part 1 is applicable.
29 Clearances, creepage distances and solid insulation
This clause of Part 1 is applicable except as follows.
29.2 Addition:
For battery chargers for outdoor use, the microenvironment is pollution degree 3 unless the
insulation is enclosed or located so that it is unlikely to be exposed to pollution during normal
use of the appliance.
30 Resistance to heat and fire
This clause of Part 1 is applicable except as follows.
30.2.2 Not applicable.
31 Resistance to rusting
This clause of Part 1 is applicable.
32 Radiation, toxicity and similar hazards
This clause of Part 1 is applicable.

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© IEC 2019
T
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A mean reading ammeter
B battery charger
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