IEC 61951-2:2017 is also available as \/2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 61951-2:2017 specifies marking, designation, dimensions, tests and requirements for secondary sealed nickel-metal hydride small prismatic, cylindrical and button cells and batteries, suitable for use in any orientation, for portable applications. This edition includes the following significant technical changes with respect to the previous edition: – addition of battery type; – addition of \u2018F\u2019 (high recovery type) designation for cells and batteries; – addition of \u2018I\u2019 (low self-discharge type) designation for cells; – revision of Figure 3 (6.1.3.1); – addition of \u201coptional pip\u201d note to positive contact; – changed leader line position from pip to flats of positive contact (B and G).<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 52<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 57<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 60<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 62<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 64<\/td>\n | 4 Parameter measurement tolerances <\/td>\n<\/tr>\n | ||||||
| 65<\/td>\n | 5 Cell and battery designation and marking 5.1 Cell and battery designation 5.1.1 Small prismatic cells and cylindrical cells <\/td>\n<\/tr>\n | ||||||
| 66<\/td>\n | 5.1.2 Button cells <\/td>\n<\/tr>\n | ||||||
| 67<\/td>\n | 5.1.3 Batteries 5.2 Cell or battery termination 5.3 Marking 5.3.1 Small prismatic cells and cylindrical cells <\/td>\n<\/tr>\n | ||||||
| 68<\/td>\n | 5.3.2 Button cells 5.3.3 Batteries 5.4 Exemption of wording 6 Dimensions 6.1 Small prismatic cells and cylindrical cells 6.1.1 General <\/td>\n<\/tr>\n | ||||||
| 69<\/td>\n | 6.1.2 Small prismatic cells 6.1.3 Cylindrical cells Figures Figure 1 \u2013 Jacketed cylindrical cells Figure 2 \u2013 Jacketed small prismatic\u00a0cells Tables Table 1 \u2013 Dimensions of jacketed small prismatic cells <\/td>\n<\/tr>\n | ||||||
| 70<\/td>\n | Figure 3 \u2013 Jacketed cells dimensionally interchangeable with primary cells Table 2 \u2013 Dimensions of jacketed cylindrical cells dimensionally interchangeable with primary cells <\/td>\n<\/tr>\n | ||||||
| 71<\/td>\n | 6.2 Button cells Table 3 \u2013 Dimensions of jacketed cylindrical cells not dimensionally interchangeable with primary cells <\/td>\n<\/tr>\n | ||||||
| 72<\/td>\n | 6.3 9 V type nickel-metal hydride batteries Figure 4 \u2013 Button cells Figure 5 \u2013 9 V type nickel-metal hydride batteries Table 4 \u2013 Dimensions of button cells <\/td>\n<\/tr>\n | ||||||
| 73<\/td>\n | 7 Electrical tests 7.1 General 7.2 Charging procedure for test purposes 7.2.1 Charging procedure for cell 7.2.2 Charging procedure for battery 7.3 Discharge performance 7.3.1 General Table 5 \u2013 Dimensions of 9 V type nickel-metal hydride batteries <\/td>\n<\/tr>\n | ||||||
| 74<\/td>\n | 7.3.2 Discharge performance at 20\u00a0\u00b0C Table 6 \u2013 Discharge performance at 20\u00a0\u00b0C forsmall prismatic cells and cylindrical cells Table 7 \u2013 Discharge performance at 20\u00a0\u00b0C for button cells <\/td>\n<\/tr>\n | ||||||
| 75<\/td>\n | 7.3.3 Discharge performance at 0\u00a0\u00b0C Table 8 \u2013 Discharge performance at 20\u00a0\u00b0C for batteries Table 9 \u2013 Rated capacity (mAh) compliance test (example) <\/td>\n<\/tr>\n | ||||||
| 76<\/td>\n | 7.3.4 Discharge performance for rapid charge cells (R cells) 7.4 Charge (capacity) retention Table 10 \u2013 Discharge performance at 0\u00a0\u00b0C forsmall prismatic cells and cylindrical cells Table 11 \u2013 Discharge performance at 0\u00a0\u00b0C for button cells <\/td>\n<\/tr>\n | ||||||
| 77<\/td>\n | 7.5 Endurance 7.5.1 Endurance in cycles Table 12 \u2013 Endurance in cycles for small prismatic, button and cylindrical cells not dimensionally interchangeable with primary cells <\/td>\n<\/tr>\n | ||||||
| 78<\/td>\n | Table 13 \u2013 Endurance in cycles for H or X cells Table 14 \u2013 Endurance in cycles for X cells <\/td>\n<\/tr>\n | ||||||
| 79<\/td>\n | Table 15 \u2013 Endurance in cycles for HR or XR cells Table 16 \u2013 Endurance in cycles for cylindrical cells dimensionally interchangeable with primary cells <\/td>\n<\/tr>\n | ||||||
| 80<\/td>\n | 7.5.2 Permanent charge endurance Table 17 \u2013 Permanent charge endurance for L, M, H or X cells <\/td>\n<\/tr>\n | ||||||
| 81<\/td>\n | Table 18 \u2013 Permanent charge endurance for LT, MT or HT cells <\/td>\n<\/tr>\n | ||||||
| 83<\/td>\n | 7.6 Charge acceptance at constant voltage 7.7 Overcharge 7.7.1 Small prismatic, L, M, H, X, LS or MS cylindrical, and button cells Table 19 \u2013 Permanent charge endurance for LU, MU or HU cells <\/td>\n<\/tr>\n | ||||||
| 84<\/td>\n | 7.7.2 LT\/LU, MT\/MU or HT\/HU cylindrical cells 7.7.3 J cylindrical cells 7.7.4 JT cylindrical cells Table 20 \u2013 Overcharge at 0\u00a0\u00b0C <\/td>\n<\/tr>\n | ||||||
| 85<\/td>\n | 7.7.5 R cylindrical cells 7.8 Safety device operation 7.9 Surface temperature limitation device operation (for S cell only) <\/td>\n<\/tr>\n | ||||||
| 86<\/td>\n | 7.10 Storage 7.10.1 Button cells or batteries, small prismatic cells or batteries, cylindrical cells or batteries <\/td>\n<\/tr>\n | ||||||
| 87<\/td>\n | 7.10.2 Button cells or batteries, small prismatic cells or batteries, cylindrical cells or batteries (high recovery type) Table 21 \u2013 Capacity deterioration due to storage period for cells or batteries <\/td>\n<\/tr>\n | ||||||
| 88<\/td>\n | 7.11 Charge acceptance at +55\u00a0\u00b0C for LT, MT or HT cylindrical cells Table 22 \u2013 Capacity deterioration due to storage period for cells or batteries (high recovery type) <\/td>\n<\/tr>\n | ||||||
| 89<\/td>\n | 7.12 Trickle charge acceptance for JT cylindrical cells 7.13 Internal resistance 7.13.1 General Table 23 \u2013 Charge and discharge at +55\u00a0\u00b0C Table 24 \u2013 Trickle charge acceptance for JT cylindrical cells <\/td>\n<\/tr>\n | ||||||
| 90<\/td>\n | 7.13.2 Measurement of the internal AC resistance 7.13.3 Measurement of the internal DC resistance <\/td>\n<\/tr>\n | ||||||
| 91<\/td>\n | 8 Mechanical tests 9 Safety requirements 10 Type approval and batch acceptance 10.1 General 10.2 Type approval 10.2.1 Type approval for small prismatic cells and button cells Table 25 \u2013 Constant discharge currents usedfor measurement of DC resistance <\/td>\n<\/tr>\n | ||||||
| 92<\/td>\n | Table 26 \u2013 Sequence of tests for type approval for small prismatic cells <\/td>\n<\/tr>\n | ||||||
| 93<\/td>\n | Table 27 \u2013 Sequence of tests for type approvalfor small prismatic cells (high recovery type) <\/td>\n<\/tr>\n | ||||||
| 94<\/td>\n | Table 28 \u2013 Sequence of tests for type approval for button cells <\/td>\n<\/tr>\n | ||||||
| 95<\/td>\n | 10.2.2 Type approval for cylindrical cells Table 29 \u2013 Sequence of tests for type approval for button cells (high recovery type) <\/td>\n<\/tr>\n | ||||||
| 96<\/td>\n | Table 30 \u2013 Sequence of tests for type approval for cylindrical cells <\/td>\n<\/tr>\n | ||||||
| 97<\/td>\n | 10.2.3 Type approval for batteries Table 31 \u2013 Sequence of tests for type approval for cylindrical cells (high recovery type) <\/td>\n<\/tr>\n | ||||||
| 98<\/td>\n | 10.3 Batch acceptance Table 32 \u2013 Sequence of tests for type approval for batteries Table 33 \u2013 Sequence of tests for type approval for batteries (high recovery type) <\/td>\n<\/tr>\n | ||||||
| 99<\/td>\n | Table 34 \u2013 Recommended test sequence for batch acceptance <\/td>\n<\/tr>\n | ||||||
| 100<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Tracked Changes. Secondary cells and batteries containing alkaline or other non acid electrolytes. Secondary sealed cells and batteries for portable applications – Nickel-metal hydride<\/b><\/p>\n |