SIST EN 61951-2:2017/oprA1:2022

SLOVENSKI STANDARD
SIST EN 61951-2:2017/oprA1:2022
01-januar-2022
Sekundarni členi in baterije z alkalnimi ali drugimi nekislinskimi elektroliti -
Sekundarni zatesnjeni členi in baterije za prenosne naprave - 2. del: Nikelj-
kovinski hidrid
Secondary cells and batteries containing alkaline or other non acid electrolytes -
Secondary sealed cells and batteries for portable applications - Part 2: Nickel-metal
hydride
Sekundärzellen und -batterien mit alkalischen oder anderen nichtsäurehaltigen
Elektrolyten - Tragbare wiederaufladbare gasdichte Zellen und Batterien - Teil 2: Nickel-
Metallhydrid
Accumulateurs alcalins et autres accumulateurs à électrolyte non acide - Accumulateurs
étanches pour applications portables - Partie 2: Nickel-métal hydrure
Ta slovenski standard je istoveten z: EN 61951-2:2017/prA1:2021
ICS:
29.220.30 Alkalni sekundarni členi in Alkaline secondary cells and
baterije batteries
SIST EN 61951-2:2017/oprA1:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61951-2:2017/oprA1:2022

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SIST EN 61951-2:2017/oprA1:2022
21A/777/CDV

COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61951-2/AMD1 ED4
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2021-11-05 2022-01-28
SUPERSEDES DOCUMENTS:
21A/765/CD, 21A/771/CC

IEC SC 21A : SECONDARY CELLS AND BATTERIES CONTAINING ALKALINE OR OTHER NON-ACID ELECTROLYTES
SECRETARIAT: SECRETARY:
France Mr Pierre Bourg
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

TC 21,TC 35
Other TC/SCs are requested to indicate their interest, if any,
in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members
of CENELEC, is drawn to the fact that this Committee
Draft for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through
the CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.

TITLE:
Secondary cells and batteries containing alkaline or other non acid electrolytes - Secondary
sealed cells and batteries for portable applications - Part 2: Nickel-metal hydride

PROPOSED STABILITY DATE: 2024

NOTE FROM TC/SC OFFICERS:
The attached IEC 61951-2 ED4 amendment CDV draft is based on decision of compilation of comments
on CD (21A/771/CC).
Copyright © 2021 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for
any other purpose without permission in writing from IEC.

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th
1 IEC 61951-2 4 Edition Amendment
2 Change to 2 Rationale: IEC 62902 should be added to normative references.
3 Change to 3.15 Rationale: Trickle charge definition should be added to help user
4 understanding.
5 Change to 5.3.1 and 5.3.2 Rationale: Marking of registered trademark should be added after
6 name and identification.
7 Change to 5.3.3 Rational: Marking symbols for identification of the chemistry according to IEC
8 62902 should be added.
9 Change to Table 3 in 6.1.3.2 Rationale: It is not necessary to specify the dimensions of cells
10 other than dimensionally interchangeable with primary cells in detail. This is because the
11 marking of cell and battery is not required to be described such the designation of dimensions.
12 As with other IEC standards (eg IEC 62675:2014, IEC 63115-1:2019), it only needs to show how
13 to dimension a cell. Also, other international standards such as IEC 62620:2014 and IEC
14 63115-1:2019 require a rule to describe dimensions in cell designation. Similar description
15 rules have already been described in 5.1, and the reason for the description in 6.1 is unclear.
16 Change to Table 3 in 6.1.3.2 Rationale: 6 sizes are missing from the chart that were not found
17 during development.
18 Change to Table 3 in 6.1.3.2 Rationale: Typos that were not found during development.
19 HR/23/60 is not the correct designation. This should be HR/23/61
20 Change to Table 6 in 7.3.2.2 Rationale: J and JT designations should be separated from
21 “M/MT/MU/MS” because there are difference of discharge characteristics between M cells
22 and J cells (also see defined in 5.1.1.1)
23 Change to 7.5.1.2 Rationale: “LS” and “MS” are not listed. LS and MS should be included in
24 500 cycle requirement.
25 Change to Table 16 in 7.5.1.4 Rationale: The 0.2 ItA cycle life check every 50 cycles should be
26 eliminated since it can lead to misleading accelerated cycle life test results. Test termination at
27 60% capacity at 0.5 ItA more accurately reflects the actual usage conditions of most consumer
28 devices.
29 Change to 7.5.1.4 Rationale: IEC designations should be used.
30 Change to 7.5.2.2 and Table 17 in 7.5.2.2 Rationale: Typos that were not found during
31 development. “J” is not listed. J designation should be added.
32 Change to 7.7.2 Rationale: Typos that were not found during development. This sentence
33 should refer to table 10, not 9.
34 Change to 7.8 Rationale: The term “gas escape mechanism” is more accurate for this test than
35 “safety device operation” since it describes a specific function.
36 Change to 7.13.1 Rationale: Note should be added to clarify that internal resistance

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37 measurement is not required.
38 Change to 7.13.2 Rationale: Formula should be corrected, and units of measurement should
39 be clarified.
40 Change to 7.13.3 Rationale: Formula should be corrected, and units of measurement should
41 be clarified.
42 Change to Table 25 in 7.13.3 Rationale: Typos that were not found during development.
43 “MRJ”, “U”, and “F” are not listed. Add designations to table.
44 Change to Table 26, 27, 28, and 29 in 10.2.1 Rationale: Tables should reference clause 7.5.1
45 rather than 7.5.
46 Change to Table 34 in 10.3 Rationale: “as agreed” should be changed to footnote “a” in
47 order to add detail.
48
49 2 Normative references
50 The following documents are referred to in the text in such a way that some or all of their
51 content constitutes requirements of this document. For dated references, only the edition
52 cited applies. For undated references, the latest edition of the referenced document
53 (including any amendments) applies.
54 IEC 60050-482:2004, International Electrotechnical Vocabulary (IEV) – Part 482: Primary
55 and secondary cells and batteries
56 IEC 60086-1, Primary batteries – Part 1: General
57 IEC 60086-2, Primary batteries – Part 2: Physical and electrical specifications
58 IEC 61959, Secondary cells and batteries containing alkaline or other non-acid
59 electrolytes – Mechanical tests for sealed portable secondary cells and batteries
60 IEC 62133-1, Secondary cells and batteries containing alkaline or other non-acid
61 electrolytes – Safety requirements for portable sealed secondary cells and for batteries
62 made from them, for use in portable applications – Part 1: Nickel systems
63 IEC 62902, Secondary cells and batteries - Marking symbols for identification of their
64 chemistry
65
66 3.15
67 trickle charge
68 charge method by supplying a minute current while disconnecting from load to supplement self-
69 discharge of cell
70
71 5.3.1 Small prismatic cells and cylindrical cells
72 Each jacketed cell supplied without connections shall carry durable markings giving the
73 following minimum information:

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74 • sealed rechargeable nickel-metal hydride or Ni-MH;
75 • rated capacity;
76 • nominal voltage;
77 • polarity (+ and –);
78 • date of manufacture (which may be in code);
79 • name, identification or registered trademark of manufacturer or supplier;
80
81 5.3.2 Button cells
82 Each button cell supplied without connection shall carry durable markings giving the
83 following minimum information:
84 • designation as specified in 5.1;
85 • polarity (+ and –);
86 • date of manufacture (which may be in code);
87 • name, identification or registered trademark of manufacturer or supplier.
88 •
89 5.3.3 Batteries
90 Each battery shall carry durable markings giving the following minimum information:
91 • rated capacity;
92 • nominal voltage;
93 • date of manufacture (which may be in code);
94 • marking symbols (identification of the chemistry according to IEC 62902).
95

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96 Table 3 – Example of dimensions of jacketed cylindrical cells
97 not dimensionally interchangeable with primary cells
a

Cell designation Diameter Height
mm mm

HR 11/30 10.5 30.0
HR 11/45 10,5 44,5
HR 11/51 10,5 50,5
HR 11/67 10,5 67,0
HR 15/18 14.5 17.5
HR 15/28 14.5 28.0
0
HR 15/30 14.5 30.0
–1,5
HR 15/43 14,5 43,0
HR 15/49 14,5 0 49,0
HR 15/51 14,5 50,5
–0,7
HR 15/67 15,0 67,0
HR 17/29 17,0 28,5
HR 17/43 17,0 43,0
0
HR 17/50 17,0 50,0
HR 17/67 17,0 67,0 –2,0
HR 18/44 18,0 43,5
HR 18/67 18,0 67,0
HR 19/67 19,0 67,0
HR 19/68 18.5 67.5
0
HR 23/34 23,0 34,0
–1,5
HR 23/43 23,0 43,0

HR 23/44 23,0 43,5
HR 23/50 23,0 50,0
HR 23/61 23,0 61,0
HR 26/47 25,8 0 47,0
0
HR 26/50 25,8 50,0
–1,0
HR 33/36 33,0 36,0
–2,0
HR 33/62 33,0 61,5
HR 33/91 33,0 91,0
0/–2,5
HR 34/60 33,5 59,5
0/–2,0
HR 43/91 43.0 91.0
0/–2,5
a
 The letters HR to be followed by L, M, H or X and T and/or R as appropriate (see 5.1).
98
99
100
101
102
103
104

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105 Table 6 – Discharge performance at 20 °C for
106 small prismatic cells and cylindrical cells
Discharge conditions Minimum discharge duration
h/min
Rate of Final voltage Cell designation
constant
current
M/MT/MU/M
L/LT/LU/LS J JT H/HT/HU X
S/
A V
a

1,0 5 h 5 h 5 h 5 h 5 h 5 h
0,2 I
t
1,0 I 0,9 – 42 min 48 min 43 min 48 min 54 min
t
b

0,8 – –  6 min 9 min
5,0 I
t
b

0,7 – –  – 4
...