IEC 61056-2:2012

IEC 61056-2 ®
Edition 3.0 2012-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
General purpose lead-acid batteries (valve-regulated types) –
Part 2: Dimensions, terminals and marking

Batteries d'accumulateurs au plomb-acide pour usage général (types à
soupapes) –
Partie 2: Dimensions, bornes et marquage

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IEC 61056-2 ®
Edition 3.0 2012-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
General purpose lead-acid batteries (valve-regulated types) –

Part 2: Dimensions, terminals and marking

Batteries d'accumulateurs au plomb-acide pour usage général (types à

soupapes) –
Partie 2: Dimensions, bornes et marquage

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
M
CODE PRIX
ICS 29.220.20 ISBN 978-2-88912-894-5

– 2 – 61056-2 © IEC:2012
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Dimensions . 6
5 Terminals . 6
6 Marking . 6
6.1 Marking of polarity . 6
6.2 Marking items . 6
7 Classification of battery-shapes . 6
8 Classification of terminal types . 9
Bibliography . 12

Figure 1 – P-type batteries . 8
Figure 2 – C-type cells . 9
Figure 3 – F-contacts (flat contacts) . 9
Figure 4 – B-contacts (bolt and nut system) . 10
Figure 5 – Lead-type terminal . 10
Figure 6 – Screw contacts . 11
Figure 7 – K-contact (button-contact) . 11

Table 1 – Prismatic design (P-type) . 7
Table 2 – Cylindrical shape (C-type) . 8

61056-2 © IEC:2012 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GENERAL PURPOSE LEAD-ACID BATTERIES
(VALVE-REGULATED TYPES) –
Part 2: Dimensions, terminals and marking

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
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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.
International Standard IEC 61056-2 has been prepared by IEC technical committee 21:
Secondary cells and batteries.
This third edition cancels and replaces the second edition of IEC 61056-2 published in 2002. It
constitutes a technical revision.
The main changes consist in adding new battery designations and an update of the
requirements like the one concerning the marking.

– 4 – 61056-2 © IEC:2012
The text of this standard is based on the following documents:
FDIS Report on voting
21/766/FDIS 21/773/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.
A list of all parts of the IEC 61056 series, published under the general title General purpose
lead-acid batteries (valve-regulated types), can be found on the IEC website.
The committee has decided that the contents of this publication 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.
The contents of the corrigendum of October 2012 have been included in this copy.

61056-2 © IEC:2012 – 5 –
GENERAL PURPOSE LEAD-ACID BATTERIES
(VALVE-REGULATED TYPES) –
Part 2: Dimensions, terminals and marking

1 Scope
This part of IEC 61056 specifies the dimensions, terminals and marking for all general purpose
lead-acid cells and batteries of the valve regulated type :
• for either cyclic or float charge application;
• in portable equipment, for instance, incorporated in tools, toys, or in static emergency, or
uninterruptible power supply and general power supplies.
The cells of this kind of lead-acid battery may either have flat-plate electrodes in prismatic
containers or have spirally wound pairs of electrodes in cylindrical containers. The sulphuric
acid in these cells is immobilized between the electrodes either by absorption in a microporous
structure or in a gelled form.
This standard defines the dimensions of the batteries in length, height and width, as well as the
shapes of the terminals.
The lead-acid cells and batteries which are described in this standard should be tested
according to the requirements of IEC 61056-1.
This part of IEC 61056 does not apply for example to lead-acid cells and batteries used for
• vehicle engine starting applications (IEC 60095 series),
• traction applications (IEC 60254 series) or
• stationary applications (IEC 60896 series).
Conformance to this standard requires that dimensions, terminals and marking correspond to
these requirements.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
IEC 60445, Basic and safety principles for man-machine interface, marking and identification –
Identification of equipment terminals, conductor terminations and conductors
IEC 61056-1:2012, General purpose lead-acid batteries (valve-regulated types) –
Part 1:General requirements, functional characteristics – Methods of test
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61056-1, as well as
the following apply.
– 6 – 61056-2 © IEC:2012
3.1
lead-type terminal
terminal in which one end comes from a battery and a connecting fitting to the equipment side
is provided at another end through a lead wire such as a polyvinyl chloride insulated wire
3.2
screw contact
terminal having a construction such that a bolt or nut is embedded in a battery beforehand and
a lead wire can be connected only with a nut or bolt
4 Dimensions
The standardized battery dimensions are listed in Tables 1 and 2, together with nominal voltage,
configuration, and capacity.
5 Terminals
Terminal types and dimensions are depicted in Figures 3, 4, 5, 6 and 7.
6 Marking
6.1 Marking of polarity
The polarity shall be marked by the symbol of “+” on the positive pole and “–” on the negative
pole. The case where the battery carries a marking of polarity of both terminals by the color of
the lead wire connected to the battery shall be as specified in IEC 60445.
6.2 Marking items
The marking contains the minimum information which has to be supplied with the battery.
The following information shall be clearly and permanently marked on each battery:
a) supplier’s or manufacturer's name or trade mark;
b) type designation or product name;
NOTE The standardized type designation is a mnemonic term to define the batteries covered under this standard.
c) nominal voltage (n × 2,0 V);
d) rated capacity C ;
e) polarity;
f) date of manufacture, its abbreviation or code;
g) safety symbols according to national or international standards;
h) recycling symbol (see IEC 61429).
7 Classification of battery-shapes
The batteries shall be classified as shown in Tables 1 and 2 according to their shape.
The prismatic design batteries (P-type) are shown in Figure 1. The cylindrical batteries (C-type)
are shown in Figure 2.
61056-2 © IEC:2012 – 7 –
Table 1 – Prismatic design (P-type)
External container dimensions
Type Nominal Length Width Height Tolerance ± Max. Capacity
a
designation Voltage mm mm mm overall C
mm
Ah
V height
mm
2P100 2 53 51 94 2 103 10,0
4P10 4 35 42 51 2 60 1,0
4P30 4 91 35 60 2 69 3,0
6P10 6 51 42 51 2 60 1,0
6P12 6 97 25 51 3 60 1,2
6P30 6 134 34 60 2 69 3,0
6P32A 6 66 33 119 3 128 3,2
6P40 6 70 48 102 2 111 4,0
6P42 6 62 52 98 2 107 4,2
6P60 6 151 34 94 3 103 6,0
6P70 6 98 56 118 2 127 7,0
6P100 6 152 50 94 3 103 10,0
6P200 6 157 83 125 2 134 20,0
8P25 8 134 36 63 3 72 2,5
8P30 8 179 34 60 2 65 3,0
12P7 12 96 25 61,5 2 63,5 0,7
12P12 12 98 49 51 4 61 1,2
12P19 12 178 34 60 3 69 1,9
12P25 12 199 36 63 3 72 2,5
12P29 12 79 56 98 2 103 2,9
12P30 12 134 67 60 2 69 3,0
12P40 12 195 47 70 2 75 4,0
12P50 12 90 70 102 2 111 5,0
12P50A 12 152 50 94 3 103 5,0
12P60 12 151 65 94 2 103 6,0
12P100 12 152 98 94 3 103 10,0
12P150 12 181 77 167 3 176 15,0
12P240 12 175 167 125 3 134 24,0
12P240A 12 166 125 175 2 177 24,0
12P380 12 204 172 172 4 178 38,0
12P380A 12 194 162 172 5 179 38,0
12P500 12 234 169 190 3 193 50,0
12P600 12 275 170 190 5 193 60,0
12P650 12 350 166 174 2 176 65,0
NOTE 1 The column “Capacity” should be taken as an approximate capacity, for reference value only.
NOTE 2 The dimensions are based on Figure 1.
a The numerals and symbols used for the type designation denote the following meanings:
− the first numeral, for example “2”, designates the nominal voltage;
− “P” is the symbol for “prismatic”;
− the last number, for example “25” means 25 = Capacity × 10 (Ah).

– 8 – 61056-2 © IEC:2012
Table 2 – Cylindrical shape (C-type)
External dimensions
Max.
Nominal Capacity
Height Diameter Tolerance ±
overall
Type
voltage C
a
designation height
mm mm mm
V Ah
mm
2C25 2 61 34 2 69 2,5
2C50 2 72 44 2 82 5,0
2C130 2 123 52 2 137 13,0
2C250 2 158 64 2 176 25,0
NOTE 1 The column “Capacity” should be taken as an approximate capacity, for reference value only.
NOTE 2 The dimensions are based on Figure 2.
a
The numerals and symbols used for the type designation denote the following meanings:
− the first numeral, for example “2”, designates the nominal voltage;
− “C” is the symbol for “cylindrical”;
− the last number, for example “25” means 25 = Capacity × 10 (Ah).

Length
Width
Overall
Container
height
height
IEC  072/12
Figure 1 – P-type batteries
61056-2 © IEC:2012 – 9 –
Diameter
Overall
Container
height
height
IEC  073/12
Figure 2 – C-type cells
8 Classification of terminal
...