Lead-acid starter batteries - Part 1: General requirements and methods of test

This European Standard is applicable to lead-acid batteries with a nominal voltage of 12 V, used primarily as a power source for the starting of internal combustion engines, lighting and also for auxiliary equipment of internal combustion engine vehicles. These batteries are commonly called "starter batteries". Batteries with a nominal voltage of 6 V are also included within the scope of this standard. All referenced voltages need to be divided by two for 6 V batteries. This European Standard is applicable to batteries for the following purposes: − batteries for passenger cars, − batteries for commercial and industrial vehicles. This European Standard is not applicable to batteries for other purposes, for example the starting of railcar internal combustion engines or for motorcycles.

Blei-Akkumulatoren-Starterbatterien - Teil 1: Allgemeine Anforderungen und Prüfungen

Diese Norm gilt für Blei-Säure-Batterien mit einer Nennspannung von 12 V, die in erster Linie als Energie-quelle zum Starten von Verbrennungsmotoren, zur Beleuchtung und auch für die Zusatzausrüstung von Fahrzeugen mit Verbrennungsmotor benutzt werden. Diese Batterien werden einheitlich als „Starterbatterien“ bezeichnet. Batterien mit einer Nennspannung von 6 V sind in dieser Norm ebenfalls eingeschlossen. Alle erwähnten Spannungen müssen für 6 V Batterien durch zwei geteilt werden. Diese Norm gilt für Batterien der folgenden Anwendungen: – Batterien für Personenwagen; – Batterien für kommerzielle und industrielle Fahrzeuge. Diese Norm gilt nicht für Batterien mit anderen Einsatzbestimmungen, z. B. zum Starten von Motoren von Schienenfahrzeugen oder Motorrädern. ANMERKUNG Eine eigenständige Norm für Motorradbatterien ist in Vorbereitung.

Batteries d'accumulateurs de démarrage au plomb - Partie 1 : Prescriptions générales et méthodes d'essais

La présente Norme européenne est applicable aux batteries d'accumulateurs au plomb, d'une tension nominale de 12 V, utilisées principalement comme source de courant pour le démarrage des moteurs à combustion interne, ainsi que pour l'éclairage et les installations auxiliaires des véhicules équipés de moteurs à combustion interne. Ces batteries sont couramment appelées "batteries de démarrage". Les batteries d'une tension nominale de 6 V relèvent également du domaine d'application de la présente norme. Pour les batteries de 6 V, toutes les tensions référencées doivent être divisées par deux. La présente Norme européenne est applicable aux batteries destinées aux usages suivants: − batteries pour véhicules de tourisme, − batteries pour véhicules commerciaux, utilitaires et industriels. La présente Norme européenne ne s'applique pas aux batteries destinées à d'autres usages tels que, par exemple, le démarrage des moteurs à combustion interne des automotrices ou les motocycles.

Svinčeno-kislinske zaganjalne baterije - 1. del: Splošne zahteve in preskusne metode

Ta standard se uporablja za svinčeno-kislinske baterije z nazivno napetostjo 12 V, ki se uporabljajo predvsem kot vir napajanja za zagon motorjev z notranjim izgorevanjem, razsvetljavo in tudi za pomožno opremo vozil z motorji z notranjim izgorevanjem. Običajno te baterije imenujemo »zaganjalne baterije«. Tudi baterije z nazivno napetostjo 6 V so zajete v področje uporabe tega standarda. Vse navedene napetosti je treba v primeru baterij z napetostjo 6 V deliti z 2.
Ta standard se uporablja za baterije za naslednje namene:
− baterije za potniške avtomobile;
− baterije za komercialna in industrijska vozila.
Ta standard se ne uporablja za baterije za druge namene, na primer za zagon železniških motornih vozil z motorjem z notranjim izgorevanjem ali za motorna kolesa.
NOTE: V pripravi je ločen standard za baterije motornih koles.

General Information

Status
Published
Publication Date
19-Nov-2015
Current Stage
6060 - Document made available
Due Date
20-Nov-2015
Completion Date
20-Nov-2015

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SLOVENSKI STANDARD
SIST EN 50342-1:2016
01-marec-2016
1DGRPHãþD
SIST EN 50342-1:2006
SIST EN 50342-1:2006/A1:2012
6YLQþHQRNLVOLQVNH]DJDQMDOQHEDWHULMHGHO6SORãQH]DKWHYHLQSUHVNXVQH
PHWRGH
Lead-acid starter batteries - Part 1: General requirements and methods of test

Blei-Akkumulatoren-Starterbatterien - Teil 1: Allgemeine Anforderungen und Prüfungen

Batteries d'accumulateurs de démarrage au plomb - Partie 1: Prescriptions générales et

méthodes d'essais
Ta slovenski standard je istoveten z: EN 50342-1:2015
ICS:
29.220.20 .LVOLQVNLVHNXQGDUQLþOHQLLQ Acid secondary cells and
EDWHULMH batteries
SIST EN 50342-1:2016 en,fr

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50342-1:2016
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SIST EN 50342-1:2016
EUROPEAN STANDARD EN 50342-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2015
ICS 29.220.20 Supersedes EN 50342-1:2006
English Version
Lead-acid starter batteries - Part 1: General requirements and
methods of test

Batteries d'accumulateurs de démarrage au plomb - Partie Blei-Akkumulatoren-Starterbatterien - Teil 1: Allgemeine

1 : Prescriptions générales et méthodes d'essais Anforderungen und Prüfungen

This European Standard was approved by CENELEC on 2015-10-05. 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.
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

© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 50342-1:2015 E
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SIST EN 50342-1:2016
EN 50342-1:2015 (E)
Contents Page

European foreword ............................................................................................................................................ 3

1 Scope ..................................................................................................................................................... 5

2 Normative references ........................................................................................................................... 5

3 General ................................................................................................................................................... 5

3.1 Introduction ........................................................................................................................................... 5

3.2 Designation of starter batteries ........................................................................................................... 6

3.3 Condition on delivery ........................................................................................................................... 6

3.3.1 Specific gravity of electrolyte and open circuit voltage ................................................................... 6

3.3.2 Definition of fully charged new battery .............................................................................................. 6

3.4 Electrical characteristics ..................................................................................................................... 7

3.5 Mechanical characteristics .................................................................................................................. 7

4 General requirements ........................................................................................................................... 8

4.1 Identification, labelling ......................................................................................................................... 8

4.2 Marking of the polarity ......................................................................................................................... 8

5 General test conditions ........................................................................................................................ 8

5.1 Sampling of batteries ........................................................................................................................... 8

5.2 Charging method - Definition of a fully-charged battery .................................................................. 9

5.3 Test equipment ..................................................................................................................................... 9

5.3.1 Measuring instruments ........................................................................................................................ 9

5.3.2 Water bath ........................................................................................................................................... 10

5.4 Test sequence ..................................................................................................................................... 10

6 Test methods and requirements ....................................................................................................... 11

6.1 Capacity check C ............................................................................................................................... 11

6.2 Cranking performance test ................................................................................................................ 12

6.3 High current discharge test at low temperature .............................................................................. 13

6.4 Charge acceptance test ..................................................................................................................... 13

6.5 Charge retention test .......................................................................................................................... 14

6.6 Endurance in cycle test ...................................................................................................................... 14

6.7 Corrosion test ..................................................................................................................................... 15

6.8 Deep discharge test ............................................................................................................................ 16

6.9 Water consumption test ..................................................................................................................... 16

6.10 Vibration resistance test .................................................................................................................... 17

6.11 Electrolyte retention test .................................................................................................................... 19

6.11.1 Vented batteries .................................................................................................................................. 19

6.11.2 Valve regulated batteries ................................................................................................................... 19

7 Dry-charged batteries ......................................................................................................................... 19

7.1 General ................................................................................................................................................. 19

7.2 Activation of dry charged batteries .................................................................................................. 20

7.3 Testing of dry charged batteries ....................................................................................................... 20

Annex A (normative) Safety labelling – Definition of the six coloured symbols ..................................... 21

Annex B (normative) Correlation between C20 and RC.............................................................................. 22

Annex C (normative) Battery performance marking ................................................................................... 23

Bibliography ..................................................................................................................................................... 24

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SIST EN 50342-1:2016
EN 50342-1:2015 (E)
European foreword

This document (EN 50342-1:2015) has been prepared by CLC/TC 21X “Secondary cells and batteries”.

The following dates are fixed:
• latest date by which this document has (dop) 2016-10-05
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2018-10-05
standards conflicting with this
document have to be withdrawn

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.

This document supersedes EN 50342-1:2006.

EN 50342, Lead-acid starter batteries, is currently composed of the following parts:

− Part 1: General requirements and methods of test [the present document];
− Part 2: Dimensions of batteries and marking of terminals;
− Part 3: Terminal system for batteries with 36 V nominal voltage;
− Part 4: Dimensions of batteries for heavy vehicles;
− Part 5: Properties of battery housings and handles;

− Part 6: Batteries for Micro-Cycle Applications [currently at Formal Vote stage];

− Part 7: General requirements and methods of tests for motorcycle batteries [currently at Formal Vote

stage].

EN 50342-1:2015 includes the following significant technical changes with respect to EN 50342-1:2006:

a) The following topics have been reworked/changed in the new version:
1) simplified structure;
2) correction of errors;
3) updated to actual state of art of lead acid batteries;
4) definition of new requirement levels and a new system for identification.
b) The following test procedures and requirements have been updated:
1) charging procedure (reworked);
2) cold cranking procedure (reworked);
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SIST EN 50342-1:2016
EN 50342-1:2015 (E)
3) charge retention (reworked);
4) deep discharge (new);
5) cycling (reworked);
6) water consumption;

7) vibration test procedures (reworked and new requirement level V4 added for heavy trucks).

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SIST EN 50342-1:2016
EN 50342-1:2015 (E)
1 Scope

This European Standard is applicable to lead-acid batteries with a nominal voltage of 12 V, used primarily as a

power source for the starting of internal combustion engines, lighting and also for auxiliary equipment of

internal combustion engine vehicles. These batteries are commonly called “starter batteries”. Batteries with a

nominal voltage of 6 V are also included within the scope of this standard. All referenced voltages need to be

divided by two for 6 V batteries.
This European Standard is applicable to batteries for the following purposes:
− batteries for passenger cars,
− batteries for commercial and industrial vehicles.

This European Standard is not applicable to batteries for other purposes, for example the starting of railcar

internal combustion engines or for motorcycles.
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.

EN 50342–2, Lead-acid starter batteries — Part 2: Dimensions of batteries and marking of terminals

EN 50342–4, Lead-acid starter batteries — Part 4: Dimensions of batteries for heavy vehicles

EN 50342-5, Lead-acid starter batteries — Part 5: Properties of battery housings and handles

EN 50342–6, Lead-acid starter batteries — Part 6: Batteries for Micro-Cycle Applications

EN 61429, Marking of secondary cells and batteries with the international recycling symbol ISO 7000-1135

and indications regarding directives 93/86/EEC and 91/157/EEC (IEC 61429)

IEC 60050–482, International Electrotechnical Vocabulary — Part 482: Primary and secondary cells and

batteries
3 General
3.1 Introduction
The object of this standard is to specify:
- general requirements;

- certain essential functional characteristics, the relevant test methods and results required, for several

classes and types of starter batteries.

For general definitions of terms see IEC 60050-482, Part 482 of the International Electro-technical Vocabulary

(IEV).
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EN 50342-1:2015 (E)
3.2 Designation of starter batteries
Batteries are classified according to their types.
3.2.1
flooded or vented batteries

secondary battery having a cover provided with one or more openings through which gaseous products may

escape
3.2.2
Enhanced Flooded Batteries
EFB

secondary batteries with additional special design features to significantly improve the cycling capability

compared to standard flooded batteries

Note 1 to entry: These batteries need to have a water consumption performance level of W3, W4 or W5.

3.2.3
Valve Regulated Lead-Acid batteries
VRLA

valve regulated lead-acid batteries are secondary batteries which are closed under normal conditions but

which has an arrangement that allows the escape of gas if the internal pressure exceeds a predetermined

value

Note 1 to entry: The battery cannot receive addition to the electrolyte. In VRLA batteries the electrolyte is immobilized.

3.2.4
Absorbent Glass Mat batteries
AGM

VRLA batteries in which the electrolyte is immobilized by absorption in a glass mat

3.2.5
gel batteries
VRLA batteries in which the electrolyte is immobilized by fixing as gel
3.3 Condition on delivery
3.3.1 Specific gravity of electrolyte and open circuit voltage

Specific gravity of electrolyte and open circuit voltage of a lead acid battery depend on its state of charge and

temperature.

The specific gravity of the electrolyte of fully charged vented batteries shall be in the range 1,27 kg/l to

1,30 kg/l at 25 °C unless otherwise specified by the manufacturer.

The open circuit voltage (OCV), of fully charged batteries after a minimum of 24 h stand on open circuit, shall

be in the range 12,70 V to 12,90 V for vented types and 12,80 V to 13,00 V for valve regulated types at 25 °C

unless otherwise specified by the manufacturer.
3.3.2 Definition of fully charged new battery
New vented batteries may be supplied:

- either in a state ready for use, filled with the appropriate electrolyte to the maximum level. 24 h after an

initial charge (according to 5.2), the specific gravity of electrolyte or OCV shall be within the ranges

specified in 3.3.1. In batteries with lids without plugs checking specific gravity of electrolyte is generally

not possible. In these cases, only OCV shall be checked according to 3.3.1;
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EN 50342-1:2015 (E)
- or dry charged as defined in Clause 7.

Valve regulated batteries are normally supplied in a state ready for use. After an initial charge according to 5.2

followed by a 24 h rest period, the OCV shall be within the range specified in 3.3.1. For these batteries, the

electrolyte is not accessible and therefore its specific gravity cannot be checked.

3.4 Electrical characteristics

3.4.1 The cranking current I , to be indicated by the manufacturer, is the discharge current which the

battery can supply at –18°C for 10 s to a minimum voltage U = 7,50 V and meeting requirements of a

simulated cranking profile according to 6.2. It is used as well to check the high current discharge performance

according to 6.3.

3.4.2 The capacity of a starter battery is defined for the temperature of 25 °C ± 2 °C. The nominal capacity

C in this standard is a C20. It shall be indicated by the manufacturer as nominal 20 h capacity C20 (Ah).

The nominal 20 h capacity C is the electric charge (in Ah) that a battery can supply with a current:

I = (A)
20 h
to a final voltage U = 10,50 V.

The effective capacity C shall be determined by discharging a battery with constant current I to U = 10,50 V

e n f
(see 6.1).

3.4.3 The charge acceptance is expressed as the current I which a partially discharged battery accepts at

0 °C and a constant voltage of 14,40 V (see 6.4).

3.4.4 Charge retention is measured by the high current discharge performance of the charged and filled

battery after storage on open circuit under defined conditions of temperature and time (see 6.5).

3.4.5 The Cycling test represents the ability of a battery to perform repeated discharge / recharge cycles.

This ability shall be tested by a series of cycles under specified conditions after which the cold cranking

performance and the 20 h capacity shall be determined (see 6.6).

3.4.6 The Corrosion test checks the resistance of a battery against overcharging at increased temperatures

(see 6.7)

3.4.7 The Deep discharge test represents the ability of battery to overcome an over discharge in a vehicle

by small loads during parking for a long time (see 6.8)

3.4.8 Water consumption test checks if the battery can keep its performance under extended exposure to

heat and overcharge conditions. It is measured as loss of weight during overcharge of a fully charged battery

and is defined as g/Ah C (see 6.9).
3.5 Mechanical characteristics

3.5.1 Vibration resistance represents the ability of a battery to maintain service under acceleration forces.

(see 6.10)

3.5.2 Electrolyte retention is the ability of a battery to retain electrolyte under specified mechanical

conditions (see 6.11).
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SIST EN 50342-1:2016
EN 50342-1:2015 (E)
4 General requirements
4.1 Identification, labelling

Batteries according to this standard shall bear the following characteristics on at least one of their sides or on

the top surface:
a) the identification of manufacturer or supplier;
b) the nominal voltage, i.e. 12 V or 6 V;
c) nominal capacity C20 (Ah) (see 3.4.2),

The values of C20 for all batteries shall correspond to the specific gravity of electrolyte or OCV given in

3.3.1;
d) the nominal cranking current I (see 3.4.1);
e) the six coloured symbols as specified in Annex A, Safety labelling;
f) the marking for the separate collection and recycling according to EN 61429;
g) valve regulated batteries shall be marked ‘VRLA'.
h) Date of production (this could be a part of more complex code too)

i) Requirement levels according to water consumption, charge retention, endurance and vibration as

specified in Annex C

Batteries may be marked with other information such as the filling and charging date.

Label size: The capacity C20 (Ah) and the cold cranking current I (A) shall be displayed on a separate label

or as text on a combined label (e.g. together with additional information of the producer or type mark). The

size of the label shall be at least 3 % of the largest side of the battery. The character size high should be at

least 3 mm. The label shall be fixed on one of the four sides or on the lid. A multiple labelling is allowed.

For batteries for micro-cycle application: Specific identification according to EN 50342-6.

4.2 Marking of the polarity
This shall be in accordance with:

- EN 50342-2, Lead-acid starter batteries — Part 2: Dimensions of batteries and marking of terminals;

- EN 50342-4, Lead-acid starter batteries — Part 4: Dimensions of batteries for heavy vehicles.

5 General test conditions
5.1 Sampling of batteries

All tests shall be carried out on new battery samples. Samples shall be considered as new no later than:

- 30 d after the acid filling and formation date in the case of filled and charged batteries,

- 60 d after shipment date of the manufacturer in the case of dry-charged batteries.

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SIST EN 50342-1:2016
EN 50342-1:2015 (E)

Out of different production or sampling lots 7 batteries shall be selected for testing. Six of these batteries shall

be used for the tests. In case of equipment failures or technical deviation, one battery can be replaced to

repeat the complete sequence for this battery.

All tests shall be performed only if above conditions and conditions according to 3.3.2 are fulfilled.

5.2 Charging method - Definition of a fully-charged battery
All tests, except that in 7.3, shall commence with fully-charged batteries.

Batteries shall be considered as fully-charged if they have undergone the charging procedures. Prior to the

first capacity test, the battery charge shall be limited to 16 h.

If not specified differently by the battery manufacturer, the batteries that will be tested according to this

standard shall be charged according to Table 1.
Table 1 — Charging method
Battery Type Voltage U Current Time Battery Remarks
temperature
Flooded batteries
having size
16,00 V ± 0,05 V 5 I 24 h (16 h) 15 °C to 35 °C
according to
EN 50342–2
Flooded batteries
5 I
16,00 V ± 0,05 V 20 h (16 h) 15 °C to 35 °C Step 1
having size
according to
no limitation I 4 h (0 h) 15 °C to 35 °C Step 2
EN 50342–4
Valve regulated
14,80 ± 0,05 V 5 I 24 h (16 h) 15 °C to 35 °C
batteries

After cranking performance test and prior to first capacity check (Step 1 of present Table).

All charges shall be performed with batteries in a water bath at 25 °C ± 2 °C according to 5.3.2.

NOTE Using the water bath, it is generally accepted that the battery temperature during the charge will be maintained

in the required range.
5.3 Test equipment
5.3.1 Measuring instruments

The range of instruments used shall be appropriate for the magnitude of the parameters to be measured. The

minimum accuracy of test equipment is given in Table 2.
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SIST EN 50342-1:2016
EN 50342-1:2015 (E)
Table 2 — Accuracy of test equipment
Parameter Accuracy of test equipment
Current for cold cranking tests 0,5 %
1 % full-scale with a minimum
Current for other tests
accuracy of ± 30 mA
Voltage ±0,04 V
Temperature ±1 K
Time ±10 ms
Specific gravity of electrolyte ≤ 0,005 kg/l
±1 g below 30 kg
Weight of battery
±5 g above 30 kg

The instruments used for measuring time shall be graduated in hours, minutes and seconds.

5.3.2 Water bath

If a test needs to be carried out in a water bath, the following conditions shall be fulfilled. The terminal base of

the battery shall be at least 15 mm but not more than 25 mm above the water surface level. If several batteries

are in the same water bath then the distance between them and also the distance to the walls of the bath shall

be at least 25 mm.
Minimum soak time for batteries in water bath is 4 h.

If not stated differently in the individual test description the tolerance for the temperature of the water bath

is ± 2 °C.

It is recommended to cover the surface of the water with floating elements using testing temperatures of 40 °C

or more. This improves the thermal isolation against air and avoids evaporation of water.

5.4 Test sequence

Filled and charged batteries shall be subjected to the following initial test series:

a) 1st C check,
b) 1st cranking performance test;
c) 2nd C check,
d) 2nd cranking performance test;
e) 3rd C check,
f) 3rd cranking performance test.

For C and the cranking performance the specified values shall be met in at least one of the relevant

discharges above.

It is not necessary to complete the sequence if the specified values are achieved on the first or second test

other than for batteries that will subsequently be tested for charge acceptance.
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SIST EN 50342-1:2016
EN 50342-1:2015 (E)

If, and only if, the initial capacity and cranking tests are successful, the batteries shall be tested in accordance

with the remainder of the test sequence given in Table 3.

These tests shall commence not later than one week after completion of the initial tests.

Table 3 — Test sequence
Step Battery Reference 1 2 3 4 5 6
1 Initial charge prior to test 5.2 X X X X X X
2 1st Capacity check C 6.1 X X X X X X
3 1st cranking performance test 6.2 X X X X X X
4 2nd Capacity check C 6.1 (X) (X) (X) X (X) (X)
5 2nd cranking performance test 6.2 (X) (X) (X) X (X) (X)
6 3rd Capacity check C 6.1 (X) (X) (X) X (X) (X)
7 3rd cranking performance test 6.2 (X) (X) (X) X (X) (X)
8 Endurance in cycle test 6.6 X
9 Corrosion test 6.7 X
10 High current discharge 6.3 X X
11 Capacity check C 6.1 X X
12 Charge retention 6.5 X
13 High current discharge 6.3 X
14 Deep discharge 6.8 X
15 Capacity check C 6.1 X
16 Cranking performance test 6.2 X
17 10 cycles with 50 % DOD 6.6 X
18 Charge acceptance 6.4 X
19 Electrolyte retention 6.11 X
20 Vibration resistance 6.10 X
21 Water consumption 6.9 X
22 High current discharge 6.3 X

(X) denotes that this test needs to be carried out if the previous same test did not achieve

the requirement level. One of the batteries 1 to 6 can be replaced by battery 7 for testing

starting from step 1 in case of unexpected deviations below 90 % C or test equipment

failures during test.
6 Test methods and requirements
6.1 Capacity check C

6.1.1 Throughout the duration of the tests, the battery shall be placed in a water bath at 25 °C ± 2 °C

according to 5.3.2

6.1.2 The battery shall be discharged with the current I (calculated according to 3.4.2) kept constant

at ± 1 % of the nominal value until the terminal voltage falls to 10,50 V ± 0,05 V. The duration t (h) of this

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SIST EN 50342-1:2016
EN 50342-1:2015 (E)

discharge shall be recorded. The beginning of the discharge shall take place within a period of 1 h to 5 h from

the time of the end of charging.
6.1.3 The capacity C is C = t x I (Ah).
e e n

From each single test sequence, the maximum value of all performed capacity tests is taken to calculate the

mean value of the 20-h capacity over the six batteries as
max
∑ e
i=1 i
C =
The standard deviation is calculated for these data as:
CC−
( )
∑ ee
i=1 i
6.1.4 Requirements:

As a target, the mean value of the capacity should be equal to or greater than the labelled capacity C . Due to

inevitable statistical deviations, the requirement for compliance of 20-h capacity shall fulfil the following

condition:
CS−
( )
≥ 0,95
6.2 Cranking performance test

6.2.1 After a rest period of 24 h up to 72 h after preparation according to 5.2, the battery shall be placed in a

cooling chamber with (forced) air circulation at a temperature of −18 °C ± 1 °C until the temperature of the

middle cells has reached −18 °C ± 1 °C.

It is generally accepted that the required temperature will be achieved after a minimum period of 24 h in the

cooling chamber.

6.2.2 The battery shall then be discharged, either within or outside the cooling chamber, within 2 min after

the end of the cooling period with a current I (see 3.4.1). This current shall be kept constant to within ± 0,5 %

during the discharge.

6.2.3 After 10 s discharge, the terminal voltage U shall be recorded and the current shall be cut off. The

voltage U shall be not less than 7,50 V for all the 6 tested battery individuals in at least one sequence.

Subclauses 6.2.1 to 6.2.3 comprise stage 1 of the cranking performance test.

6.2.4 After a rest period of 10 s ± 1 s, the test shall be continued in accordance with 6.2.5.

6.2.5 The battery shall then be discharged at 0,6 I . The current shall be kept constant to within ± 0,5 %

during the discharge. The discharge shall be terminated when the battery voltage reaches 6 V. The discharge

time (t' ) at 0,6 I to 6 V shall be recorded in seconds.
6v cc
Subclause 6.2.5 comprises stage 2 of the test.
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6.2.6 t is defined as the duration of the second stage (t’ ) plus the equivalent duration of the first stage

6v 6v

discharge if run at 0,6 I , i.e. it is given, in seconds, by the following equation:

10 s
t=t '+=t '+17 s
6v 6v 6v
0,6
6.2.7 Require
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