SIST EN 60952-1:2014

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Letalske baterije - 1. del: Splošne zahteve za preskušanje in stopnje sposobnostiFlugzeugbatterien - Teil 1: Allgemeine Prüfanforderungen und LeistungsmerkmaleBatteries d'aéronefs - Partie 1: Exigences générales d'essais et niveaux de performancesAircraft batteries - Part 1: General test requirements and performance levels49.060Aerospace electric equipment and systems29.220.20EDWHULMHAcid secondary cells and batteriesICS:Ta slovenski standard je istoveten z:EN 60952-1:2013SIST EN 60952-1:2014en01-januar-2014SIST EN 60952-1:2014SLOVENSKI
STANDARDSIST EN 60952-1:20051DGRPHãþD

EUROPEAN STANDARD EN 60952-1 NORME EUROPÉENNE
EUROPÄISCHE NORM October 2013
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2013 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60952-1:2013 E
ICS 29.220.20; 49.060 Supersedes EN 60952-1:2004
English version
Aircraft batteries -
Part 1: General test requirements and performance levels (IEC 60952-1:2013)
Batteries d'aéronefs -
Partie 1: Exigences générales d'essais et niveaux de performances (CEI 60952-1:2013)
Flugzeugbatterien -
Teil 1: Allgemeine Prüfverfahren und Leistungsmerkmale
(IEC 60952-1:2013)
This European Standard was approved by CENELEC on 2013-08-13. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Foreword The text of document 21/803/FDIS, future edition 3 of IEC 60952-1, prepared by IEC/TC 21 "Secondary cells and batteries" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60952-1:2013. The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-05-13 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-08-13
This document supersedes EN 60952-1:2004. EN 60952-1:2013 includes the following significant technical changes with respect to EN 60952-1:2004: Additional test requirements to meet the needs of the regulatory airworthiness authorities for both product performance and qualification. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60952-1:2013 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 61434 NOTE
Harmonised as EN 61434. ISO 266:1997 NOTE
Harmonised as EN ISO 266:1997 (not modified). ISO 9000:2005
NOTE
Harmonised as EN ISO 9000:2005 (not modified).
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Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
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.
NOTE
When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60051-1 - Direct acting indicating analogue electrical measuring instruments and their accessories - Part 1: Definitions and general requirements common to all parts EN 60051-1 -
IEC 60051-2 - Direct acting indicating analogue electrical measuring instruments and their accessories - Part 2: Special requirements for ammeters and voltmeters EN 60051-2 -
IEC 60485 - Digital electronic d.c. voltmeters and d.c. electronic analogue-to-digital converters - -
IEC 60952-2 2013 Aircraft batteries -
Part 2: Design and construction requirements EN 60952-2 2013
IEC 60952-3 2013 Aircraft batteries -
Part 3: Product specification and declaration of design and performance (DDP) EN 60952-3 2013
ISO 2859 Series Sampling procedures for inspection by attributes
- -
ISO 7137 - Aircraft - Environmental conditions and test procedures for airborne equipment - -
RTCA DO-160 2010 Environmental Conditions and Test Procedures for Airborne Equipment - -
SAE AIR 1377A-80 - Aerospace Information Report - Fire Test Equipment for Flexible Hose and Tube Assemblies - -
SAE AS 1055B 1978 Aerospace Standard - Fire Testing of Flexible hose, Tube Assemblies, Coils, Fittings and Similar System Components - -
U.S Federal Test Method, Standard N°191A/Federal Test Method 5906 1978 Flammability (Horizontal Test) - -
IEC 60952-1 Edition 3.0 2013-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Aircraft batteries –
Part 1: General test requirements and performance levels
Batteries d’aéronefs –
Partie 1: Exigences générales d’essais et niveaux de performances
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE W ICS 29.220.20; 49.060 PRICE CODE CODE PRIX ISBN 978-2-8322-0946-2
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CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope . 8 2 Normative references . 8 3 Terms and definitions . 9 4 Test conditions and measuring apparatus . 10 4.1 General test conditions . 10 4.2 Measuring apparatus . 10 4.2.1 General . 10 4.2.2 Voltage measurement . 10 4.2.3 Current measurement . 11 4.2.4 Temperature measurement . 11 4.2.5 Time measurement . 11 4.2.6 Additional test equipment . 11 4.2.7 Mass test equipment . 11 4.3 Charging method . 11 4.4 Physical examination . 11 5 Electrical requirements and test procedures . 11 5.1 Capacity tests at the 1 I1 rate . 11 5.1.1 Rated capacity C1 . 11 5.1.2 Initial capacity requirement for vented and valve regulated nickel-cadmium batteries . 12 5.1.3 Capacity at 1 I1 and –18 °C . 12 5.1.4 Capacity at 1 I1 and –30 °C . 12 5.1.5 Capacity at 1 I1 and 50 °C . 12 5.2 Constant voltage discharge . 12 5.2.1 General . 12 5.2.2 Constant voltage . 12 5.2.3 Constant voltage discharge (14 V) . 13 5.3 Rapid discharge capacity . 14 5.3.1 Rapid discharge capacity at 23 °C . 14 5.3.2 Rapid discharge capacity at –30 °C . 14 5.4 Charge retention . 14 5.5 Storage . 15 5.6 Charge stability . 15 5.7 Short-circuit test . 15 5.8 Charge acceptance . 16 5.8.1 General . 16 5.8.2 Ambient temperature (23 °C). 16 5.8.3 Low temperature (only for batteries fitted with heaters) . 16 5.9 Insulation resistance and dielectric strength . 17 5.9.1 General . 17 5.9.2 Insulation resistance . 17 5.9.3 Dielectric strength . 17 5.10 Duty cycle performance . 17 5.11 Water consumption test . 18 SIST EN 60952-1:2014

60952-1 © IEC:2013 – 3 – 5.12 Overcharge endurance . 19 5.13 Cyclic endurance . 19 5.14 Deep discharge test . 19 5.15 Induced destructive overcharge . 20 5.16 Electrical emissions . 20 6 Environmental requirements. 20 6.1 Vibration . 20 6.1.1 General . 20 6.1.2 Battery mounting . 21 6.1.3 Declaration . 21 6.1.4 Vibration requirements . 21 6.2 Acceleration . 22 6.3 Operational shock and crash safety . 23 6.3.1 Operational shock . 23 6.3.2 Crash safety . 23 6.3.3 Declaration . 23 6.4 Explosion containment . 23 6.5 Gas emission . 24 6.6 Altitude pressure . 24 6.7 Temperature variation (shock) . 25 6.8 Fungus resistance . 25 6.8.1 General . 25 6.8.2 General method . 25 6.9 Humidity . 26 6.10 Fluid contamination. 26 6.10.1 General . 26 6.10.2 Spray test . 26 6.10.3 Immersion test . 27 6.11 Salt spray . 27 6.12 Physical integrity at high temperature (85 °C) . 28 6.13 Flammability . 28 6.13.1 General . 28 6.13.2 Flame resistant test . 28 6.13.3 Fire resistance . 29 6.13.4 Fire proof test . 29 6.14 Electrolyte resistance . 29 6.15 Temperature sensors . 30 6.16 Component qualification tests . 30 6.16.1 General . 30 6.16.2 Vent valve test . 30 6.16.3 Cell container test . 31 6.16.4 Battery electrolyte containment test . 32 6.17 Battery airtightness test (where applicable) . 33 6.18 Strength of connector receptacle – Connector types C and Q . 33 6.19 Handle strength test. 34 6.20 Hazardous materials . 34 6.21 Instructions for continued airworthiness . 34 6.22 Limitations . 34 6.23 Electronics . 34 SIST EN 60952-1:2014

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6.24 Impact resistance (non-metallic battery container) . 34 6.25 Special test requirements . 35 7 Quality assurance requirements . 35 7.1 General quality assurance requirements . 35 7.2 Approval requirements . 35 7.2.1 General requirements . 35 7.2.2 Order of testing . 35 7.2.3 Maintenance of approval . 36 7.2.4 Declaration of design and performance . 36 7.2.5 Qualification approval . 36 7.2.6 Quality conformance . 36 Bibliography . 39
Figure 1 – Vibration orientation . 21
Table 1 – Acceleration conditions . 22 Table 2 – Impact resistance requirements . 35 Table 3 – Approval test schedule . 38
60952-1 © IEC:2013 – 5 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
AIRCRAFT BATTERIES –
Part 1: General test requirements and performance levels
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. International Standard IEC 60952-1 has been prepared by IEC technical committee 21: Secondary cells and batteries. This third edition cancels and replaces the second edition published in 2004. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition: additional test requirements to meet the needs of the regulatory airworthiness authorities for both product performance and qualification. The text of this standard is based on the following documents: FDIS Report on voting 21/803/FDIS 21/814/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. SIST EN 60952-1:2014

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This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all the parts in the IEC 60952 series, published under the general title Aircraft batteries 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.
60952-1 © IEC:2013 – 7 – INTRODUCTION The IEC 60952 series defines minimum environmental and performance requirements for establishing a qualification standard for airworthiness of lead-acid and nickel-cadmium aircraft batteries, which contain corrosive electrolytes. The series defines test procedures for determining battery performance. The electrical test results may be used to establish airworthiness in a particular application. For all tests, the manufacturer declares the minimum performance for each battery type. The requirements of IEC 60952 for aircraft batteries are divided into three parts:
– Part 1 defines test procedures for the evaluation, comparison and qualification of batteries and states minimum environmental performance levels for airworthiness.
– Part 2 defines the design requirements for aircraft batteries as well as their format (shape and size) and the range of aircraft interface connectors that are used. – Part 3 defines the product specification which is used to define specific requirements for an application and a declaration of design and performance (DDP), which details the performance of a battery format when tested to Part 1.
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AIRCRAFT BATTERIES –
Part 1: General test requirements and performance levels
1 Scope This part of the IEC 60952 series defines test procedures for the evaluation, comparison and qualification of batteries and states minimum performance and environmental levels for airworthiness. Where specific tests are defined with no pass/fail requirement (to establish performance capability), the manufacturer’s declared values, from qualification testing, will be used to establish minimum requirements for ongoing maintenance of approval for that design of battery. To provide representative examples, this standard utilises voltage and current values based upon an aircraft electrical system nominally rated at 28 V d.c. Additionally, the nominal values for cell voltage are assumed to be 1,2 V per cell for nickel-cadmium batteries and 2,0 V per cell for lead-acid batteries.
The specific topics addressed in this part of IEC 60952 serve to establish acceptable quality standards required to qualify a battery as airworthy.
In cases where the requirements for a specific application exceed those detailed in this standard, the purchaser will detail said requirements in the product specification and the method of establishing compliance. It is recognised that additional data may be required by other organisations (national standards bodies, AECMA, SAE etc.). The present standard can be used as a framework to devise tests for generation of the required data. 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 60051-1, Direct acting indicating analogue electrical measuring instruments and their accessories – Part 1: Definitions and general requirements common to all parts IEC 60051-2, Direct acting indicating analogue electrical measuring instruments and their accessories – Part 2: Special requirements for ammeters and voltmeters IEC 60485, Digital electronic d.c. voltmeters and d.c. electronic analogue-to-digital convertors1 IEC 60952-2:2013, Aircraft batteries – Part 2: Design and construction requirements
IEC 60952-3:2013, Aircraft batteries – Part 3: Product specification and declaration of design and performance (DDP)2 ___________ 1
Withdrawn. 2
The first edition (1993) was published under the title Aircraft batteries – Part 3: External electric connectors SIST EN 60952-1:2014

60952-1 © IEC:2013 – 9 – ISO 2859 (all parts), Sampling procedures for inspection by attributes ISO 7137, Aircraft – Environmental conditions and test procedures for airborne equipment RTCA DO-160:2010, Environmental Conditions and Test Procedures for Airborne Equipment U.S. Federal Test Method, Standard No. 191A / Federal Test Method 5906: 1978, Flammability (Horizontal Test)
SAE AIR 1377A-80, Aerospace Information Report – Fire Test Equipment for Flexible Hose and Tube Assemblies SAE AS 1055B:1978, Aerospace Standard – Fire Testing of Flexible Hose, Tube Assemblies, Coils, Fittings and Similar System Components 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1
current value value of current in ampere (A) used to charge and discharge cells and batteries, expressed as a multiple of the capacity
EXAMPLE For example, a current of 20 A used to charge a cell with a rated capacity C (Ah) of 100 Ah would be expressed as C/5 or 0,2
C (A). Note 1 to entry: IEC 61434 is equally applicable to both nickel-cadmium and lead-acid and therefore the reference current (It) can be expressed as
(It)A = CnAh/1 h where Cn is the rated capacity declared by the manufacturer in ampere hours and n is the timebase in hours for which the rated capacity is declared. 3.2
1 I1 rate current which the battery delivers to give not less than its rated C1 capacity in 1 h
Note 1 to entry: This is the basis on which all other current ratings are defined. 3.3
rated capacity C1 minimum capacity, obtained from a charged battery when discharged at the 1 I1 rate to the end point voltage (see 3.6) Note 1 to entry: Rated capacity is expressed in Ah.
3.4
constant voltage current
Ipr discharge current, which the battery delivers at the conclusion of a 15 s power discharge, controlled so as to maintain a constant terminal voltage of half the nominal voltage 3.5
charged battery battery that has been fully charged in accordance with the battery manufacturer’s instructions or as defined in the product specification SIST EN 60952-1:2014

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3.6
end point voltage
EPV unless otherwise stated, during discharge the battery end point voltage (EPV) corresponding to a mean voltage per cell of 1,00 V for nickel-cadmium or 1,67 V for lead-acid batteries Note 1 to entry: This note applies to the French language only. 3.7
serviced battery battery that has been fully prepared and maintained in accordance with the manufacturer’s instructions or as defined in the product specification 3.8
airworthiness compliance of a battery or part thereof with all conditions and regulations required by the appropriate governmental authorities for their safe operation and performance 3.9
product specification separate document which details the specific requirements which a battery is expected to meet for a particular aircraft application 4 Test conditions and measuring apparatus 4.1 General test conditions If specific test conditions are not defined for a test, the test shall be carried out under the following general test condition: – air pressure: 85 kPa to 106 kPa (850 mbar to 1 060 mbar), – temperature: 23 °C ± 2 °C, – relative humidity (RH): not to exceed 70 %. If definite tolerances have not been specified, a deviation of not more than ±5 % from the given non-electrical values will be permitted. When using this standard to evaluate products designed to operate on an aircraft electrical system other than the nominal 28 V d.c., or whose chemical properties are such that the individual cell voltage differs from that stated above, test values shall be adjusted accordingly. 4.2 Measuring apparatus 4.2.1 General
The measuring method used for the tests shall be selected to suit the magnitude of the parameters to be measured. The apparatus shall be regularly calibrated and shall have at least the degree of accuracy given below. 4.2.2 Voltage measurement The instruments used for measuring voltage shall be voltmeters having an accuracy of class 0,5 or better, as defined in IEC 60051-1 and IEC 60051-2. Digital systems shall comply with IEC 60485. The resistance of the voltmeters shall be at least 5 000 Ω/V. To establish the battery voltage, the measurements shall be taken at the battery interface connector. SIST EN 60952-1:2014

60952-1 © IEC:2013 – 11 – 4.2.3 Current measurement The instruments used for current measurement shall be ammeters having an accuracy of class 0,5 or better, as defined in IEC 60051-1 and IEC 60051-2. Digital systems shall comply with IEC 60485. This accuracy class shall be maintained for the assembly of ammeter, shunt and leads. 4.2.4 Temperature measurement The instruments used for temperature measurement shall have an accuracy of ± 1 °C or better. 4.2.5 Time measurement The instruments used for time measurement shall be to an accuracy of 0,5 % or better. 4.2.6 Additional test equipment Equipment used shall have a measurement accuracy of 5 % unless otherwise stated. 4.2.7 Mass test equipment Equipment used shall have a measurement accuracy of 0,5 % unless otherwise stated. 4.3 Charging method The battery shall be serviced and charged in accordance with the manufacturer’s instructions or using the dedicated charger or as required in the product specification. 4.4 Physical examination Prior to the commencement of the electrical and environmental testing, each battery being tested shall be inspected to ensure that it complies with the relevant product specification as defined in IEC 60952-3, or to the manufacturer’s drawing as follows:
a) mass and dimensions;
b) minimum marking as detailed in 15.3 of IEC 60952-2:2013; c) correct warning labels; d) correct interface connectors; e) damage to case, lid and interface connectors; f) no signs of corrosion; g) no signs of electrolyte leakage; h) general standards of workmanship. 5 Electrical requirements and test procedures 5.1 Capacity tests at the 1 I1 rate 5.1.1 Rated capacity C1 Test method – The battery shall be commissioned and charged in accordance with 4.3. After standing for not less than 20 h and not more than 24 h at an ambient temperature of 23 °C ± 2 °C, it shall be discharged at the 1 I1 rate to its EPV, maintaining the ambient temperature at 23 °C ± 2 °C during discharge. Requirements – The battery shall deliver a capacity of not less than 100 % C1 (discharge time 1 h). SIST EN 60952-1:2014

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5.1.2 Initial capacity requirement for vented and valve regulated nickel-cadmium batteries To meet the rated capacity requirement each cell shall produce a voltage of not less than 1,0 V at the end of 60 min of discharge at 1 I1 at an ambient temperature of 23 °C ± 5 °C. 5.1.3 Capacity at 1 I1 and –18 °C Test method – The battery shall be commissioned and charged in accordance with 4.3. After standing for not less than 20 h and not more than 24 h at an ambient temperature of −18 °C ± 2 °C, it shall be discharged at the 1 I1 rate to its EPV, maintaining the ambient temperature at –18 °C ± 2 °C during discharge.
Requirements – The capacity shall be recorded and shall not be less than the value declared by the manufacturer or stated in the product specification. 5.1.4 Capacity at 1 I1 and –30 °C Test method – The battery shall be commissioned and charged in accordance with 4.3. After standing for not less than 20 h and not more than 24 h at an ambient temperature of −30 °C ± 2 °C, it shall be discharged at the 1 I1 rate to its EPV, maintaining the ambient temperature at –30 °C ± 2 °C during discharge. Requirements – The capacity shall be recorded and shall not be less than the value declared by the manufacturer or stated in the product specification. 5.1.5 Capacity at 1 I1 and 50 °C Test method – The battery shall be commissioned and charged in accordance with 4.3. After standing for not less than 20 h and not more than 24 h at an ambient temperature of 50 °C ± 2 °C, it shall be discharged at the 1 I1 rate to its EPV, maintaining the ambient temperature at 50 °C ± 2 °C during discharge. Requirements – The capacity shall be recorded and shall not be less than the value declared by the manufacturer or stated in the product specification. 5.2 Constant voltage discharge 5.2.1 General Either of the following test methods shall be carried out as agreed by the approving authority. The discharge current capability of the test equipment shall exceed 50 I1. 5.2.2 Constant voltage
5.2.2.1 General Subject the battery to a constant voltage discharge equal to the number of cells multiplied by half their nominal voltage at the following temperatures.
5.2.2.2 Constant voltage current at 23 °C Test method – The battery shall be serviced and charged in accordance with 4.3. After standing for not less than 20 h and not more than 24 h at 23 °C ± 2 °C, it shall be discharged at a rate so as to maintain a constant terminal voltage corresponding to half the nominal voltage for not less than 15 s. The discharge load shall be automatically controlled to enable a plot of current against time to be recorded throughout the test. SIST EN 60952-1:2014

60952-1 © IEC:2013 – 13 – Requirements – The current at 15 s shall be designated IPR and the current at 0,3 s shall be designated IPP. The values obtained shall be reported and shall not be less than the values declared by the manufacturer or as stated in the product specification.
5.2.2.3 Constant voltage current at –18 °C Test method – The battery shall be serviced and charged in accordance with 4.3. After standing for not less than 20 h and not more than 24h at –18 °C ± 2 °C, it shall be discharged at a rate so as to maintain a constant terminal voltage corresponding to half the nominal voltage for not less than 15 s. The discharge load shall be automatically controlled to enable a plot of current against time to be recorded throughout the test. Requirements – The current at 0,3 s and 15 s shall be reported and shall not be less than the value declared by the manufacturer or as stated in the product specification. 5.2.2.4 Constant voltage current at –30 °C Test method – The battery shall be serviced and charged in accordance with 4.3. After standing for not less than 20 h and not more than 24 h at –30 °C ± 2 °C, the battery shall be discharged at a rate so as to maintain a constant terminal voltage corresponding to half the nominal voltage for not less than 15 s. The discharge load shall be automatically controlled to enable a plot of current against time to be recorded throughout the test. Requirements – The current at 0,3 s and 15 s shall be reported and shall not be less than the value declared by the manufacturer or as stated in the product specification. 5.2.3 Constant voltage discharge (14 V) 5.2.3.1 General
Subject the battery to a constant voltage (14,0 V) discharge at the following temperatures. The testing equipment for high rate discharge at 14 V shall be capable of recording data with a resolution of 0,1 s intervals. 5.2.3.2 Constant voltage current at 23 °C
Test method – The battery shall be serviced and charged in accordance with 4.3. After standing for not less than 20 h and not more than 24 h at 23 °C ± 2 °C, it shall be discharged at a rate so as to maintain a constant terminal voltage of 14,0 V for not less than 60 s. Throughout the test, a plot of current against time shall be recorded. Requirements – The current at 0,3 s, 5 s, 15 s and 30 s together with the average current for the 60 s of the test shall not be less than the value declared by the manufacturer or as stated in the product specification. 5.2.3.3 Constant voltage current at – 18 °C Test method – The battery shall be serviced and charged in accordance with 4.3. After standing for not less than 20 h and not more than 24 h at –18 °C ± 2 °C, it shall be discharged at a rate so as to maintain a constant terminal voltage of 14,0 V for not less than 60 s. Throughout the test, a plot of current against time shall be recorded. Requirements – The current at 0,3 s, 5 s, 15 s and 30 s together with the average current for the 60 s shall not be less than the value declared by the manufacturer or as stated in the product specification. SIST EN 60952-1:2014

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5.2.3.4 Constant voltage current at –30 °C Test method – The battery shall be serviced and charged in accordance with 4.3. After standing for not less than 20 h and not more than 24 h at –30 °C ± 2 °C, it shall be discharged at a rate so as to maintain a constant terminal voltage of 14,0 V for not less than 60 s. Requirements – Throughout the test, a plot of current against time shall be recorded; the current at 0,3 s, 5 s, 15 s and 30 s together with the average current for the 60 s shall not be less than the value declared by the manufacturer or as stated in the product specification. 5.3 Rapid discharge capacity 5.3.1 Rapid discharge capacity at 23 °C Test method – The battery shall be serviced and charged in accordance with 4.3. After standing for not less than 20 h and not more than 24 h at an ambient temperature of 23 °C ± 2 °C, it shall be discharged at a 10 I1 rate to its EPV. Requirements – The capacity shall be recorded and shall not be less than the value declared by the manufacturer or as stated in the product specification. 5.3.2 Rapid discharge capacity at –30 °C Test method – The battery shall be serviced and charged in accordance with 4.3. After standing for not less than 20 h and not more than 24 h at an ambient temperature of −30 °C ± 2 °C, a serviced and charged battery shall be discharged at a 10 I1 rate to an end voltage corresponding to a mean voltage per cell of 0,5 V for nickel-cadmium or 0,83 V for lead-acid, maintaining the ambient temperature at –30 °C ± 2 °C during discharge. Requirements
– The capacity shall be recorded and shall not be less than the value declared by the manufacturer or as stated in the product specification. 5.4 Charge retention Test method – The battery shall be subjected to 2 separate tests, one at each of the 2 different temperatures defined, each to be undertaken sequentially. Test temperature: a) 23 °C ± 5 °C, b) 50 °C ± 2 °C. The battery shall be serviced and charged in accordance with 4.3. It shall be discharged according to 5.1.1 and the discharge duration shall be recorded (capacity 1). It shall be recharged and, with the battery cover on, stored in an open circuit condition at the temperature defined above for a period of 28 days, after which it shall be removed from the thermal storage, allowed to stabilise to a temperature of 23 °C ± 5 °C and then discharged at the 1 I1 rate to its EPV (capacity 2).
Requirements – The capacity (capacity 2) and the percentage reduction of capacity (calculated from capacities 1 and 2) shall be recorded and shall comply with the value declared by the manufacturer or as stated in the product specification. SIST EN 60952-1:2014

60952-1 © IEC:2013 – 15 – 5.5 Storage Test method – A new battery, as supplied by the manufacturer, shall be stored in temperate conditions (20 °C ± 15 °C; humidity less than 70 %) for 24 months. Different storage periods may be specified either by the manufacturer or stated in the product specification. Requirements – After storage, the battery shall be serviced and charged in accordance with 4.3. It shall then satisfy the test sequence in Table 3 for test battery in group V. 5.6 Charge stability Test method – The battery shall be serviced and charged in accordance with 4.3. To facilitate temperature measurements of the battery, a thermocouple shall be connected to either an inter-cell or monobloc connector, near to the centre of the battery, fitted with any necessary instrumentation and placed in a chamber at 50 °C ± 2 °C for not less than 20 h and not more than 24 h, prior to commencement of the test. The battery shall remain in the chamber for the duration of this test and the airflow, across the working section of the chamber, shall be at a minimum speed of 0,45 m per second. Discharge the battery at a 6 I1 rate for 5 min and immediately recharge, using either a constant voltage charge of 28,5 V ± 0,1 V or a dedicated charger for a period of 10 h as defined by the manufacturer or as stated in the product specification. Record the charging current every second for the first 5 min and thereafter record both current and temperature at interva
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