FprEN IEC 60086-2-1:2025

Primary batteries - Part 2-1: Physical and electrical specifications of batteries with aqueous electrolyte

Primärbatterien - Teil 2-1: Physikalische und elektrische Eigenschaften von Batterien mit wässrigem Elektrolyt

Piles électriques - Partie 2-1: Spécifications physiques et électriques des piles à électrolyte aqueux

Primarne baterije - 2-1. del: Fizikalne in električne značilnosti (specifikacije) baterij z vodnim elektrolitom

General Information

• Status: Not Published
• Publication Date: 03-May-2026
• ICS: 29.220.10 - Primary cells and batteries
• Technical Committee: CLC/SR 35 - Primary batteries
• Drafting Committee: IEC/TC 35 - IEC_TC_35
• Current Stage: 5020 - Vote circulated - Formal Approval
• Start Date: 19-Dec-2025
• Due Date: 31-May-2024
• Completion Date: 19-Dec-2025
• Directive: 2023/1542 - Regulation (EU) 2023/1542 of the European Parliament and of the Council of 12 July 2023 concerning batteries and waste batteries, amending Directive 2008/98/EC and Regulation (EU) 2019/1020 and repealing Directive 2006/66/EC (Text with EEA relevance)
• Mandate: M/579 - COMMISSION IMPLEMENTING DECISION of 7.12.2021 on a standardisation request to the European standardisation organisations as regards performance, safety and sustainability requirements for batteries
• Ref Project: kSIST FprEN IEC 60086-2-1:2026 - Primary batteries - Part 2-1: Physical and electrical specifications of batteries with aqueous electrolyte

Overview

FprEN IEC 60086-2-1:2025 is a CLC/CENELEC-adopted Committee Draft for Vote (CDV) of the IEC standard that defines the physical and electrical specifications for primary batteries (primary cells) with aqueous electrolyte. Prepared by IEC TC 35: Primary cells and batteries (secretariat Japan), this edition provides structured specifications, dimensional drawings and compliance guidance. The document is a CDV and therefore subject to change; the proposed stability date is 2029.

This standard is aimed at manufacturers, test laboratories, product designers and conformity assessment bodies that require a harmonized reference for battery dimensions, mechanical features and electrical specification tables for a broad range of aqueous-electrolyte primary cells.

Key Topics

The standard organizes content to support practical implementation and testing. Key topics include:

• Scope and normative references that frame applicability and referenced documents.
• Terms and definitions to ensure consistent interpretation of battery and test terminology.
• Battery dimensions and symbols with detailed dimensional drawings for each category.
• Dimensional stability and validity of testing to guide assessment procedures.
• Constitution of the battery specification tables which form the core normative data for manufacturers and testers.

The table of contents shows a comprehensive set of categories and cell designations, such as Category 1 (coin and cylindrical types), Category 4 (small button cells), Category 5 and 6, and many commonly used designations (e.g., LR, R, PR, SR series). The standard includes numerous figures (dimensional drawings) and tables (gauge openings, application tabulations) to support conformity checks.

Applications

This standard provides practical value across multiple activities:

• Product design: ensures battery dimensions and terminal arrangements meet international norms for interchangeability.
• Manufacturing: helps production engineering align with accepted physical and electrical specifications to reduce field failures.
• Testing and certification: supplies the dimensional and electrical reference points for conformity testing and type approvals.
• Supply chain and procurement: enables clear specification language for purchasing and compatibility verification in devices such as consumer electronics, hearing aids, remote controls, and other portable equipment listed in Annex A.

Benefits include improved interoperability, clearer conformity requirements, and reduced risk of non-compliant parts entering the market.

Related Standards

• The work is prepared by IEC TC 35 and is related to other IEC and CENELEC standards governing battery safety, performance and marking.
• Annexes provide cross-reference indexes, application tabulations and a compliance checklist to help align this standard with existing battery standards and national adoptions.

For implementers: review the CDV notes on patent declarations and "In Some Countries" clauses, and monitor final publication for any changes arising from the voting stage.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 60086-2-1:2024
01-november-2024
Primarne baterije - 2-1. del: Fizikalne in električne značilnosti (specifikacije) baterij
z vodnim elektrolitom
Primary batteries - Part 2-1: Physical and electrical specifications of batteries with
aqueous electrolyte
Piles électriques - Partie 2-1: Spécifications physiques et électriques des piles à
électrolyte aqueux
Ta slovenski standard je istoveten z: prEN IEC 60086-2-1:2024
ICS:
29.220.10 Primarni členi in baterije Primary cells and batteries
oSIST prEN IEC 60086-2-1:2024 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 60086-2-1:2024
oSIST prEN IEC 60086-2-1:2024
35/1550/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60086-2-1 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-09-06 2024-11-29
SUPERSEDES DOCUMENTS:
35/1531/CD, 35/1537A/CC
IEC TC 35 : PRIMARY CELLS AND BATTERIES
SECRETARIAT: SECRETARY:
Japan Mr Takao Uyama
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
SC 3C,TC 21,SC 21A,TC 61,TC 108
ASPECTS CONCERNED:
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.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries”
clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for
submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Primary batteries - Part 2-1: Physical and electrical specifications of batteries with aqueous electrolyte

PROPOSED STABILITY DATE: 2029
NOTE FROM TC/SC OFFICERS:
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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1 CONTENTS
2 FOREWORD . 5
3 INTRODUCTION . 7
4 1 Scope . 8
5 2 Normative references . 8
6 3 Terms and definitions . 8
7 4 Battery dimensions, symbols . 10
8 5 Dimensional stability . 10
9 6 Validity of testing . 10
10 7 Constitution of the battery specification tables . 10
11 8 Physical and electrical specifications . 12
12 8.1 Category 1 batteries . 12
13 8.1.1 General . 12
14 8.1.2 Category 1 – Specifications: LR1, R1, LR8D425 . 12
15 8.1.3 Category 1 – Specifications: LR03, TR03, R03 . 14
16 8.1.4 Category 1 – Specifications: LR6, TR6, R6P, R6S . 15
17 8.1.5 Category 1 – Specifications: LR14, R14P, R14S . 16
18 8.1.6 Category 1 – Specifications: LR20, R20P, R20S . 17
19 8.2 Category 2 battery – Void . 18
20 8.3 Category 3 battery – Specification: LR9 . 18
21 8.4 Category 4 batteries . 19
22 8.4.1 General . 19
23 8.4.2 Category 4 – Specifications: PR70, PR41, PR48, PR44, PR1154 . 19
24 8.4.3 Fit acceptance gauge for PR batteries . 21
25 8.4.4 Category 4 – Specifications: LR41, LR55, LR54, LR43, LR44 . 23
26 8.4.5 Category 4 – Specifications: SR62, SR63, SR65, SR64, SR60, SR67,
27 SR66, SR58, SR68, SR59, SR69, SR41, SR57, SR55, SR48, SR54,
28 SR42, SR43, SR44 . 24
29 8.5 Category 5 batteries . 26
30 8.5.1 Category 5 – Specifications: 4LR44, 4SR44 . 26
31 8.5.2 Category 5 – Specification: 8LR932 . 27
32 8.5.3 Category 5 – Specifications: AR40, 5AR40, 6AR40, 5PR175/172,
33 6PR225/155. 28
34 8.6 Category 6 batteries . 29
35 8.6.1 Category 6 – Specification: 4LR61 . 29
36 8.6.2 Category 6 – Void . 29
37 8.6.3 Category 6 – Void . 29
38 8.6.4 Category 6 – Specifications: 3R12P, 3R12S, 3LR12 . 30
39 8.6.5 Category 6 – Specifications: AS4, AS6S, AS6P, AS8, AS10, AS12,
40 PS8S, PS8P, PS10 . 31
41 8.6.6 Category 6 – Specification: 4R25Y . 32
42 8.6.7 Category 6 – Specifications: 4R25X, 4LR25X . 33
43 8.6.8 Category 6 – Specifications: 4R25-2, 4LR25-2 . 34
44 8.6.9 Category 6 – Specifications: 6AS4S, 6PS4S, 6PS4P . 35
45 8.6.10 Category 6 – Specifications: 6F22, 6LR61, 6LP3146 . 36
46 8.6.11 Category 6 – Configurations: Stud for 6F22, 6LR61 6LP3146 . 37
47 8.6.12 Category 6 – Specifications: 6AS6P, 6AS6S, 6PS6P, 6PS6S. 38
48 Annex A (informative) Tabulation of batteries by application . 39

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49 Annex B (informative) Cross-reference index . 45
50 Annex C (informative) Index reference to subclause . 47
51 Annex D (informative) Compliance checklist . 48
52 Bibliography . 49
54 Figure 1 – Dimensional drawing: Category 1 . 12
55 Figure 2 – Dimensional drawing: LR1, R1, LR8D425 . 13
56 Figure 3 – Dimensional drawing: LR03, TR03, R03 . 14
57 Figure 4 – Dimensional drawing: LR6, TR6, R6P, R6S . 15
58 Figure 5 – Dimensional drawing: LR14, R14P, R14S . 16
59 Figure 6 – Dimensional drawing: LR20, R20P, R20S . 17
60 Figure 7 – Dimensional drawing: LR9 . 18
61 Figure 8 – Dimensional drawing: Category 4 . 19
62 Figure 9 – Dimensional drawing: PR70, PR41, PR48, PR44, PR1154 . 19
63 Figure 10 – Gauge opening for P system batteries . 21
64 Figure 11 – Suggested gauge layout . 21
65 Figure 12 – Air hole placement diagram for P system batteries . 22
66 Figure 13 – Dimensional drawing: LR41, LR55, LR54, LR43, LR44 . 23
67 Figure 14 – Dimensional drawing: SR62, SR63, SR65, SR64, SR60, SR67, SR66,
68 SR58, SR68, SR59, SR69, SR41, SR57, SR55, SR48, SR54, SR42, SR43, SR44 . 24
69 Figure 15 – Dimensional drawing: 4LR44, 4SR44 . 26
70 Figure 16 – Dimensional drawing: 8LR932 . 27
71 Figure 17 – Dimensional drawing: AR40, 5AR40, 6AR40, 5PR175/172, 6PR225/155 . 28
72 Figure 18 – Dimensional drawing: 4LR61 . 29
73 Figure 19 – Dimensional drawing: 3R12P, 3R12S, 3LR12 . 30
74 Figure 20 – Dimensional drawing: AS4, AS6P/S, AS8, AS10, AS12, PS8P/S, PS10 . 31
75 Figure 21 – Dimensional drawing: 4R25Y. 32
76 Figure 22 – Dimensional drawing: 4R25X, 4LR25X . 33
77 Figure 23 – Dimensional drawing: 4R25-2, 4LR25‑2 . 34
78 Figure 24 – Dimensional drawing: 6AS4S, 6PS4S, 6PS4P . 35
79 Figure 25 – Dimensional drawing: 6F22, 6LR61, 6LP3146 . 36
80 Figure 26 – Dimensional drawing: Stud . 37
81 Figure 27 – Dimensional drawing: 6AS6P, 6AS6S, 6PS6P, 6PS6S . 38
83 Table 1 – Gauge opening dimension . 21
84 Table A.1 – Automatic camera . 39
85 Table A.2 – Digital audio . 39
86 Table A.3 – Electric equipment . 39
87 Table A.4 – Electrical fence equipment, parking meters, light houses, beacons, railway
88 signalling and road signalling . 40
89 Table A.5 – Hearing aid . 40
90 Table A.6 – Hearing aid standard . 40
91 Table A.7 – High drain application . 41
92 Table A.8 – Implant high drain . 41

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93 Table A.9 – Implant low drain . 41
94 Table A.10 – Implant low drain with wireless . 41
95 Table A.11 – Personal grooming . 41
96 Table A.12 – Portable lighting (LED) . 42
97 Table A.13 – Portable stereo . 42
98 Table A.14 – Radio . 42
99 Table A.15 – Radio / Clock . 43
100 Table A.16 – Radio/clock/remote control . 43
101 Table A.17 – Remote control . 43
102 Table A.18 – Road warning lamp . 43
103 Table A.19 – Smoke detector . 43
104 Table A.20 – Toy (motor) . 44
105 Table A.21 – Toy (non-motorized) . 44
106 Table A.22 – Wireless streaming . 44
107 Table B.1 – Category 1 batteries . 45
108 Table B.2 – Category 4 batteries . 45
109 Table B.3 – Category 5 batteries . 46
110 Table B.4 – Category 6 batteries . 46
111 Table C.1 – Index . 47
112 Table D.1 – Summary of specified items . 48
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114 INTERNATIONAL ELECTROTECHNICAL COMMISSION
115 ____________
117 PRIMARY BATTERIES –
119 Part 2-1:
120 Physical and electrical specifications
121 of batteries with aqueous electrolyte
124 FOREWORD
125 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
126 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
127 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
128 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
129 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
130 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
131 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
132 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
133 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
134 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
135 consensus of opinion on the relevant subjects since each technical committee has representation from all
136 interested IEC National Committees.
137 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
138 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
139 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
140 misinterpretation by any end user.
141 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
142 transparently to the maximum extent possible in their national and regional publications. Any divergence between
143 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
144 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
145 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
146 services carried out by independent certification bodies.
147 6) All users should ensure that they have the latest edition of this publication.
148 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
149 members of its technical committees and IEC National Committees for any personal injury, property damage or
150 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
151 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
152 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
153 indispensable for the correct application of this publication.
154 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
155 rights. IEC shall not be held responsible for identifying any or all such patent rights.
156 International Standard IEC 60086-2-1 has been prepared by IEC technical committee 35:
157 Primary cells and batteries.
158 This first edition cancels and replaces the fourteenth edition of IEC 60086-2 published in 2021.
159 This edition constitutes a technical revision.
160 This edition includes the following significant technical changes with respect to the previous
161 edition:
162 a) separation of lithium batteries into a separate Part 2-2: Physical and electrical specifications;
163 b) clause 3, Terms and definitions, was changed from alphabetical order to hierarchy order;
164 c) TR03 and TR6 were added in Category 1, Round batteries;
165 d) load of digital audio test for LR03, TR03 and R03 was changed from 50mA to 75mA and
166 MAD was modified;
167 e) personal grooming test of LR6 was added instead of high drain application test;
168 f) high drain application test was added for TR6;

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169 g) radio /clock /remote control test was added for R6S;
170 h) CD, digital audio, wireless gaming and accessories test was removed for LR6, R6P and
171 R6S;
172 i) 4,5 V of common designation was added for 3LR12, 3R12P and 3R12S;
173 j) Annex D for common designation of IEC 60086-2:2021 was moved to IEC 60086-1, as
174 Annex H.
175 k)
176 The text of this International Standard is based on the following documents:
CD Report on voting
35/XXXX/CDV 35/XXXX/XX
178 Full information on the voting for the approval of this International Standard can be found in the
179 report on voting indicated in the above table.
180 The language used for the development of this International Standard is English.
181 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
182 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
183 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
184 described in greater detail at www.iec.ch/standardsdev/publications.
185 A list of all parts in the IEC 60086 series, under the general title Primary batteries, can be found
186 on the IEC website.
187 The committee has decided that the contents of this document will remain unchanged until the
188 stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
189 the specific document. At this date, the document will be
190 • reconfirmed,
191 • withdrawn,
192 • replaced by a revised edition, or
193 • amended.
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196 INTRODUCTION
197 The technical content of this part of IEC 60086 provides physical dimensions, discharge test
198 conditions and discharge performance requirements. IEC 60086-2-1 and IEC 60086-2-2
199 complement the general information and requirements of IEC 60086-1. Safety information of
200 IEC 60086-2-1 is available in IEC 60086-5.
201 This part was prepared to benefit primary battery users, device designers and battery
202 manufacturers by furnishing the specifics of form, fit and function for individual standardized
203 primary cells and batteries. Over the years, this part has been changed to improve its contents
204 and may again be revised in due course in the light of comments made by national committees
205 and experts on the basis of practical experience and changing technology.
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207 PRIMARY BATTERIES –
209 Part 2-1:
210 Physical and electrical specifications
211 of batteries with aqueous electrolyte
215 1 Scope
216 This part of IEC 60086 is applicable to primary batteries which are based on standardised
217 electrochemical systems using aqueous electrolytes.
218 It specifies
219 – the physical dimensions,
220 – the discharge test conditions and discharge performance requirements.
221 2 Normative references
222 The following documents are referred to in the text in such a way that some or all of their content
223 constitutes requirements of this document. For dated references, only the edition cited applies.
224 For undated references, the latest edition of the referenced document (including any
225 amendments) applies.
226 IEC 60086-1, Primary batteries – Part 1: General
227 ISO 1101, Geometrical product specifications (GPS) – Geometrical tolerancing – Tolerances of
228 form, orientation, location and run-out
229 3 Terms and definitions
230 For the purposes of this document, the terms and definitions given in IEC 60086-1 and the
231 following apply.
232 ISO and IEC maintain terminological databases for use in standardization at the following
233 addresses:
234 • IEC Electropedia: available at https://www.electropedia.org
235 • ISO Online browsing platform: available at https://www.iso.org/obp
236 3.1
237 primary cell
238 primary battery
239 cell or battery that is not designed to be electrically recharged
240 3.2
241 round cell
242 round battery
243 cell or battery with circular cross section button cell or battery
244 3.3
245 button cell
246 button battery
247 small round cell or battery where the overall height is less than the diameter, containing
248 aqueous electrolyte
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249 3.4
250 coin cell
251 coin battery
252 lithium button cell
253 lithium button battery
254 small round cell or battery where the overall height is less than the diameter, containing non-
255 aqueous electrolyte
256 Note 1 to entry: The nominal voltage of lithium batteries is typically greater than 2 V.
257 Note 2 to entry: For the specifications, refer to IEC 60086-2-2.
258 3.5
259 nominal voltage
260 U
n
261 suitable approximate value of the voltage used to designate or identify a cell, a battery or an
262 electrochemical system
263 [SOURCE: IEC 60050-482:2004, 482-03-31, modified – addition of U .]
n
264 3.6
265 open-circuit voltage
266 OCV
267 voltage across the terminals of a cell or battery when it is off discharge
268 3.7
269 end-point voltage
270 EV
271 specified voltage of a battery at which the battery discharge is terminated
272 [SOURCE:IEC 60050-482:2004, 482-03-30]
273 3.8
274 minimum average duration
275 MAD
276 minimum average time on discharge which is met by a sample of batteries
277 Note 1 to entry: The discharge test is carried out according to the specified methods or standards and designed to
278 show conformity with the standard applicable to the battery types.
279 3.9
280 application test
281 simulation of the actual use of a battery in a specific application
282 3.10
283 service output
284 service life, or capacity, or energy output of a battery under specified conditions of discharge
285 3.11
286 service output test
287 test designed to measure the service output of a battery
288 Note 1 to entry: A service output test may be prescribed, for example, when
289 a) an application test is too complex to replicate;
290 b) the duration of an application test would make it impractical for routine testing purposes.
291 3.12
292 terminal
293 conductive parts of a battery providing connection to an external circuit
294 [SOURCE:IEC 60050-482:2004, 482-02-22, modified – “conductive part of a device, electric
295 circuit or electric network, provided” replaced by to “conductive parts of a battery providing” and
296 “device, electric circuit or electric network to one or more external conductor” replaced by “an
297 external circuit”.]
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298 4 Battery dimensions, symbols
299 The symbols used to denote the various dimensions are as follows:
300 h maximum overall height of the battery;
301 h minimum distance between the flats of the positive and negative contacts;
302 h minimum projection of the flat positive contact;
303 h maximum recess of the negative flat contact surface;
304 h minimum projection of the flat negative contact;
305 d maximum and minimum diameters of the battery;
306 d minimum diameter of the flat positive contact;
307 d maximum diameter of the positive contact within the specified projection height;
308 d minimum diameter of the flat negative contact;
309 d maximum diameter of the negative contact within the specified projection height;
310 d minimum outer diameter of the negative flat contact surface;
311 d maximum inner diameter of the negative flat contact surface;
312 ⌀P concentricity of the positive contact.
313 5 Dimensional stability
314 Refer to IEC 60086-1 for dimensional stability.
315 6 Validity of testing
316 Portable primary batteries shall be subjected to the tests, as required in the IEC 60086 series.
317 Testing remains valid until a design change or requirement revision has been made. Retesting
318 is required when:
319 a battery specification changes by more than 0,1 g or 20 % mass, whichever is greater, for the
320 cathode, anode or electrolyte;
321 a battery specification changes that would lead to a failure of any of the tests;
322 there is an addition of new tests or requirements; or
323 there is a requirement change that would lead to a failure on any of the tests.
324 7 Constitution of the battery specification tables
325 – Batteries are categorized into several groups according to their shapes.
326 – In each category, batteries having the same shape but belonging to a different
327 electrochemical system are grouped together and shown in succession.
328 – Batteries are always listed in ascending order of nominal voltage and, within each nominal
329 voltage, in ascending order of volume.
330 – One common shape drawing of these batteries which fall in the same group is exhibited.
331 – Designation, nominal voltage, dimensions, discharge conditions, minimum average duration
332 and application for these batteries which fall into the same group are summarized in one
333 table.
334 – When a drawing represents only one type of battery, the dimensions of the relevant battery
335 may be directly shown on the drawing.
336 – Batteries are categorized into the following groups:
337 a) Category 1 : Round batteries according to Figure 1
338 R1, R03, R6P, R6S, R14P, R14S, R20P, R20S

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339 LR8D425, LR1, LR03, LR6, LR14, LR20
340 TR03, TR6
341 b) Category 2 : Round battery
342 Void
343 c) Category 3 : Round battery according to Figure 7
344 LR9
345 d) Category 4 : Round batteries according to Figure 8
346 PR70, PR41, PR48, PR44, PR1154
347 LR41, LR55, LR54, LR43, LR44
348 SR62, SR63, SR65, SR64, SR60, SR67, SR66, SR58, SR68, SR59, SR69, SR41,
349 SR57, SR55, SR48, SR54, SR42, SR43, SR44
350 e) Category 5: Other round batteries – Miscellaneous
351 4LR44
352 4SR44
353 8LR932
354 AR40
355 5AR40
356 6AR40
357 5PR175/172
358 6PR 225/155
359 f) Category 6: Non-round batteries – Miscellaneous
360 3R12P, 3R12S, 3LR12
361 4LR61
362 AS4, AS6P, AS6S, AS8, AS10, AS12, PS8S, PS8P, PS10
363 4R25X, 4LR25X
364 4R25Y
365 4R25-2, 4LR25-2
366 6F22, 6LR61, 6LP3146
367 6AS4S, 6PS4S, 6PS4P
368 6AS6P, 6AS6S, 6PS6P, 6PS6S
369 – The specification drawings show the shape of the relevant batteries. Dimensions for each
370 battery are shown in the tables of Clause 8 and in Figure 1 to Figure 27.
371 NOTE 1: See Annex A, Annex B and Annex C for ease of locating battery sizes.
372 NOTE 2: For lithium batteries, see IEC 60086-2-2: Physical and electrical specifications of lithium batteries.
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374 8 Physical and electrical specifications
375 8.1 Category 1 batteries
376 8.1.1 General
For the definition of the dimensions, see Clause 4.
The cylindrical surface is insulated from the contacts.
Terminals: flat/cap and base.
For general information, see IEC 60086-1.
Figure 1a): negative contact surface may not be flat
over the whole area.
Figure 1b): negative contact surface shall be
essentially flat over the whole surface area.
For batteries complying with Figure 1a) and
Figure 1b), flat negative contact is not necessarily
recessed.
When the flat negative contact surface forms the
lower part of the battery, dimensions “h ” and “h ”
1 2
are both measured from the surface and dimension
“h ” is zero.
Dimensions “⌀P” to be measured in accordance with
ISO 1101.
The profile over the dotted lines is not specified.
1 Positive contact
2 Optional pip (dimension "h " for batteries having
the pip is 0,4 mm max.)
3 Negative contact area
Recesses are permitted in the negative flat contact

surface defined by dimensions d and d for batteries
6 7
having the shape shown in Figure 1a), provided that
Figure 1a)
batteries placed end to end in series make electrical
contact with each other and that the contact
separation is an integral multiple of the contact
separation for one battery. The following conditions
shall be satisfied:
d > d
6 3
d > d
2 7
h > h
3 4
Figure 1b)
Figure 1 – Dimensional drawing:
Category 1
378 8.1.2 Category 1 – Specifications: LR1, R1, LR8D425
Dimensions in millimetres
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IEC 60086-2-1 ED1 © IEC 2024 13
Dimensions LR1 R1 LR8D425
h
max. 30,2 30,2 42,5
h
min. 29,1 29,1 41,5
h
min. 0,5 0,5 0,7
h
max. 0,2 0,2 0,1
max. 12,0 12,0 8,3
d
min. 10,9 10,9 7,7
d
max. 4,0 4,0 3,8
a
d
min. 5,0 5,0 2,3
⌀P max. 0,5 0,5 0,1
Figure 2 – Dimensional drawing: LR1,
a
This battery does not fulfill the requirement d > d due
6 3
R1, LR8D425
to constructional constraints.
Electrochemical system letter L No letter L
IEC designation LR1 R1 LR8D425
Common designation N N AAAA
U (V)
1,5 1,5 1,5
n
OCV max. (V) 1,68 1,73 1,68
Delayed discharge performance after 12 months (% of MAD) 90 80 90
EV
a
Applications Load Daily Period
MAD (initial)
(V)
Portable lighting 5,1 Ω 5 min 0,9 94 min 30 min 90 min
Laser pointer 75 Ω 1 h 1,1 No test No test 22 h
Service output
75 Ω 1 h 0,9 38 h 18 h 27 h
test
a
Standard conditions (See IEC 60086-1: 202X, Table 3, Initial discharge test).
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14 IEC 60086-2-1 ED1 © IEC 2024
381 8.1.3 Category 1 – Specifications: LR03, TR03, R03
Dimensions in millimetres
Dimensions LR03, TR03 R03
h
44,5
max. 44,5
h 43,5
min. 43,5
h
0,8
min. 0,8
h 0,5
max. 0,5
max. 10,5 10,5
d
min. 9,8 9,8
d 3,8
max. 3,8
d 4,3
min. 4,3
⌀P 0,25
max. 0,4
Figure 3 – Dimensional drawing:
LR03, TR03, R03
Electrochemical system letter L T No letter
IEC designation LR03 TR03 R03
Common designation AAA AAA AAA
U (V) 1,5
1,5 1,5
n
OCV max. (V) 1,68 1,75 1,73
Delayed discharge performance after 12 months (% of MAD) 90 90 80
a
Applications Load Daily Period EV (V) MAD (Initial)
4 min on, 56
Portable
5,1 Ω min off 0,9 130 min 130 min 50 min
b
lighting
for 8 h per day
Toy 5,1 Ω 1 h 0,8 120 min 120 min 30 min
1 h on, 11 hr
b
75 mA 0,9 10 h 10 h 2 h
Digital audio
off for 24 h
15 s per min 8
Remote control 24 Ω 1,0 14,5 h 14,5 h 4 h
h per day
Radio 75 Ω 4 h 0,9 No test No test 20 h
a
Standard conditions (See IEC 60086-1: 202X, Table 3, Initial discharge test).
b
Test conditions shall be kept identical for battery designations LR03, TR03, R03, and FR10G445 in IEC 60086-
2-2 (See also I 6.1 and Table I.2 in IEC 60086-1).
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IEC 60086-2-1 ED1 © IEC 2024 15
384 8.1.4 Category 1 – Specifications: LR6, TR6, R6P, R6S
Dimensions in millimetres
Dimensions LR6, TR6 R6P, R6S
h
50,5
max. 50,5
h 49,5
min. 49,5
h
1,0
min. 1,0
h 0,5
max. 0,5
max. 14,5 14,5
d
a
13,7
min.
13,7
d
5,5
max. 5,5
d 7,0
min. 7,0
⌀P max. 0,25 0,5
a
R6 types without a metal jacket may have a d value of 13,5.
Figure 4 – Dimensional drawing:
LR6, TR6, R6P, R6S
Electrochemical system letter L T No letter No letter
R6P R6S
IEC designation LR6 TR6
High power Standard
Common designation AA AA AA AA
U (V)
1,5 1,5 1,5 1,5
n
OCV max. (V) 1,68 1,75 1,73 1,73
Delayed discharge performance after 12 months
90 90 80 80
(% of MAD)
a
Applications Load Daily Period EV (V)
MAD (initial)
High drain 1 500 mW
b
1,05 No test 40 pulses No test No test

application 650 mW
Personal 2 min on, 58 min
750 mA 1,1 25 min 25 min No test No test
grooming off for 8h per day
Portable 4 min on, 56 min
3,9 Ω 0,9 230 min 230 min 60 min No test
lighting (LED) off for 8h per day
c
Motor/toy 3,9 Ω 1 h 0,8 5 h 5 h 65 min 45 min
Toy, non-
250 mA 1 h 0,9 5 h 5 h No test No test
motorized
Radio/clock 43 Ω 4 h 0,9 No test No test No test 22 h
Radio /clock
1 h on, 7 h off for
/remote 50 mA 1,0 30 h 30 h 10 h 7,0 h
24 h per day
c
control
a
Standard conditions (See IEC 60086-1: 202X, Table 3, Initial discharge test).
b
Repeat 10 times per hour: 1 500 mW for 2 s, then 650 mW for 28 s, then 0 mW for 55 min.
c
Test conditions shall be kept identical for battery designations LR6, TR6, R6P, R6S, and FR14505 in IEC 60086-
2-2 (See also I 6.1 and Table I.2 in IEC 60086-1).
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387 8.1.5 Category 1 – Specifications: LR14, R14P, R14S
Dimensions in millimetres
Dimensions LR14 R14P R14S
h
max. 50,0 50,0 50,0
h
min. 48,6 48,6 48,6
h
min. 1,5 1,5 1,5
h
max. 0,9 0,9 0,9
max. 26,2 26,2 26,2
d
min. 24,9 24,9 24,9
d
max. 7,5 7,5 7,5
d
min. 13,0 13,0 13,0
⌀P
max. 1,0 1,0 1,0
Figure 5 – Dimensional drawing: LR14,
R14P, R14S
Electrochemical system letter L No letter No letter
R14P R14S
IEC designation LR14
High power Standard
Common designation C C C
U (V)
1,5 1,5 1,5
n
OCV max. (V) 1,68 1,73 1,73
Delayed discharge performance after 12 months (% of MAD) 90 80 80
EV
a
Applications Load Daily period
MAD (Initial)
(V)
b
Toy 3,9 Ω 1 h 0,8 14 h 4 h 1,5 h
4 min on, 11 min off
Portable lighting 3,9 Ω 0,9 790 min 200 min 90 min
for 8 h per day
Current
Portable stereo drain 2 h 0,9 8 h No test No test
400 mA
a
Standard conditions (See IEC 60086-1: 202X, Table 3, Initial discharge test).
b
Test conditions shall be kept identical for battery designations LR14, R14P, and R14S (See also I 6.1 and
Table I.2 in IEC 60086-1).
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IEC 60086-2-1 ED1 © IEC 2024 17
390 8.1.6 Category 1 – Specifications: LR20, R20P, R20S
Dimensions in millimetres
Dimensions LR20 R20P R20S
h
max. 61,5 61,5 61,5
h
min. 59,5 59,5 59,5
h
min. 1,5 1,5 1,5
h
max. 1,0 1,0 1,0
max. 34,2 34,2 34,2
d
min. 32,3 32,3 32,3
d
max. 9,5 9,5 9,5
d
min. 18,0 18,0 18,0
⌀P
max. 1,0 1,0 1,0
Figure 6 – Dimensional drawing: LR20,
R20P, R20S
Electrochemical system letter L No letter No letter
R20P R20S
IEC designation LR20
High power Standard
Common designation D D D
U (V)
1,5 1,5 1,5
n
OCV max. (V) 1,68 1,73 1,73
Delayed discharge performance after 12 months (% of MAD) 90 80 80
a
Applications Load Daily period EV (V)
MAD (initial)
4 min on, 11 min off
Portable lighting 2,2 Ω 0,9 750 min 220 min 85 min
for 8 h per day
b
Toy 2,2 Ω 1 h 0,8 16 h 5,5 h 2 h
Radio 10 Ω 4 h 0,9 No test 33 h 18 h
Current
Portable stereo drain 2 h 0,9 11 h No test No test
600 mA
a
Standard conditions (See IEC 60086-1: 202X , Table 3, Initial discharge test).
b
Test conditions shall be kept identical for battery designations LR20, R20P, and R20S (See also I 6.1 and
Table I.2 in IEC 60086-1).
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394 8.2 Category 2 battery – Void
395 8.3 Category 3 battery – Specification: LR9
Dimensions in millimetres
Dimensions LR9
h
max. 6,2
h
min. 5,6
h
min. 2,0
h
min. 0,2
max. 16,0
d
min. 15,2
d
min. 10,0
d
max. 13,5
d
min. 10,0
d
max. 12,5
Figure 7 – Dimensional drawing: LR9
For the definition of the dimensions, see Clause 4.
The cylindrical surface is connected to the positive
terminal.
Terminals: flat/cap and case.
For general information, see IEC 60086-1.
No part of the battery shall project beyond the positive
contact area.
Marking: 4.1.6.2 of IEC 60086-1:202X is applicable.
1: Optional pip
Electrochemical system letter L
IEC designation LR9
Common designation -
U (V)
1,5
n
OCV max. (V) 1,68
Delayed discharge performance after 12 months (% of MAD) 90
a
Applications Load Daily period EV (V) MAD (initial)
Service output test 0,39 kΩ 24 h 0,9 48 h
a
Standard conditions (See IEC 60086-1: 202X, Table 3, Initial discharge test).
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IEC 60086-2-1 ED1 © IEC 2024 19
398 8.4 Category 4 batteries
399 8.4.1 General
For the definition of the dimensions, see Clause 4.
The cylindrical surface is connected to the positive
terminal. Positive contact should be made to the side of
the battery but may be made to the base.
Terminals: flat/cap and case.
The flat negative contact shall project.
Contact pressure resistance, see 4.1.3.2 of
IEC 60086‑1:202X.
For general information see IEC 60086-1.
Any difference between the height of the battery and the
distance between the contacts shall not exceed 0,1 mm.

No part of the battery shall project beyond the positive
contact.
Figure 8 – Dimensional drawing:
Marking: 4.1.6.2 of IEC 60086-1:202X is applicable.
Category 4
401 8.4.2 Category 4 – Specifications: PR70, PR41, PR48, PR44, PR1154
Dimensions in millimetres
Dimensions PR70 PR41 PR48 PR44 PR1154
max. 3,60 3,60 5,40 5,40 5,40
h / h
1 2
min. 3,30 3,30 5,05 5,05 5,05
max. 5,80 7,90 7,90 11,60 11,60
d
min. 5,65 7,70 7,70 11,30 11,30
d
min. - 3,80 3,80 3,80 3,80
d
min. - 3,00 3,00 3,80 3,80
This battery shall pass freely through the gauge in Figure 10.

Figure 9 – Dimensional drawing:
PR70, PR41, PR48, PR44, PR1154
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20 IEC 60086-2-1 ED1 © IEC 2024
Electrochemical system letter P
PR1154
b,c b,c b,c b,c
IEC designation PR70 PR41 PR48 PR44
b,c
10, 675I,
Common designation 312 13 675
PR536 PR44I
1,4 or 1,4 or 1,4 or 1,4 or 1,4 or
U (V)
n
1,45 1,45 1,45 1,45 1,45
OCV max. (V) 1,59 1,59 1,59 1,59 1,59
Delayed discharge performance after 12 months (% of MAD) 95 95 95 95 95
Daily
a
Applications Load EV (V) (initial)
MAD
period
Hearing aid Pulse: 5 mA
d
1,1 35 h No test No test No test No test

standard Background: 1,5 mA
Wireless Pulse: 3 mA (15 min)
e
1,1 28 h No test No test No test No test

streaming Background: 1,5 mA
Hearing aid Pulse:10 mA
d
1,05 No test 55 h No test No test No test

standard Background: 2 mA
Wireless Pulse: 5 mA (15 min)
e
1,1 No test 30 h No test No test No test

streaming Background: 2 mA
Hearing aid Pulse: 12 mA
d
1,05 No test No test 55 h No test No test

standard Background: 3 mA
Wireless Pulse: 5 mA (15 min)
e
1,1 No test No test 45 h No test No test

streaming Background: 3 mA
Hearing aid Pulse: 15 mA
d
1,05 No test No test No test 70 h No test

standard Background: 5 mA
Hearing aid high Pulse: 24 mA
d
1,05 No test No test No test 45 h No test

drain Background: 8 mA
24 h
Implant low drain 15 mW 1,0 No test No test No test No test 25 h
Pulse: 20 mW
Implant low drain
e
1,05 No test No test No test No test 20 h

with wireless
Background: 15 mW
Implant high 25 mW
24 h
1,0 No test No test No test No test 10 h

drain
a
Standard conditions (See IEC 60086-1: 202X, Table 3, Initial discharge test).
b
A period of at least 10 min shall elapse between activation and commencement of electrical measurement.
c
Equipment designers' attention is drawn to the importance of making positive electrical contact on the side of
the battery so that air access is not impeded for "P" system batteries.
d
Six repeated cycles of the pulse load for 100 ms, followed by the background load for 119 min, 59 s, 900 ms,
then off for 12 h (See IEC 60086-1: 202X, 5.2.2.2 Figure 1).
e
Twelve repeated cycles of the pulse load for 15 min, followed by the background load for 45 min, then off for
12 h (See IEC 60086-1: 202X, 5.2.2.2 Figure 1).
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