09/30158428 DC : 0

FOREWORD
1 Scope
2 Normative references
3 Definitions
4 Parameter measurement tolerances
5 Cell designation and marking
   5.1 Cell designation
        5.1.1 Small prismatic cells and cylindrical cells
               5.1.1.1 Small prismatic cells
               5.1.1.2 Cylindrical cells
        5.1.2 Button cells
   5.2 Cell termination
   5.3 Marking
        5.3.1 Small prismatic cells and cylindrical cells
        5.3.2 Button cells
6 Dimensions
   6.1 Small prismatic cells and cylindrical cells
        6.1.1 Small prismatic cells
        6.1.2 Cylindrical cells
               6.1.2.1 Cells dimensionally interchangeable
                       with primary cells
               6.1.2.2 Cells not dimensionally interchangeable
                       with primary cells
   6.2 Button cells
7 Electrical tests
   7.1 Charging procedure for test purposes
   7.2 Discharge performance
        7.2.1 Discharge performance at 20 degree C
        7.2.2 Discharge performance at 0 degree C
        7.2.3 Discharge performance for rapid charge
               cells (R cells)
   7.3 Charge (capacity) retention
   7.4 Endurance
        7.4.1 Endurance in cycles
               7.4.1.1 Small prismatic, button and cylindrical
                       cells not dimensionally interchangeable
                       with primary cells
               7.4.1.2 Cylindrical cells dimensionally
                       interchangeable with primary cells
               7.4.1.3 Cylindrical cells (accelerated test
                       procedures)
        7.4.2 Permanent charge endurance
               7.4.2.1 Small prismatic and button cells
               7.4.2.2 L, M, H or X cylindrical cells
               7.4.2.3 LT, MT or HT cylindrical cells
               7.4.2.4 LU, MU or HU cylindrical cells
   7.5 Charge acceptance at constant voltage
   7.6 Overcharge
        7.6.1 Small prismatic, L, M, H, X, LS or MS cylindrical,
               and button cells
        7.6.2 LT/LU, MT/MU or HT/HU cylindrical cells
        7.6.3 R cylindrical cells
   7.7 Safety device operation
   7.8 Surface temperature limitation device operation
        (for S cell only)
   7.9 Storage
   7.10 Charge acceptance at +55 degree C for LT, MT or HT
        cylindrical cells
   7.11 Internal resistance
        7.11.1 Measurement of the internal a.c. resistance
        7.11.2 Measurement of the internal d.c. resistance
8 Mechanical tests
9 Safety requirements
10 Type approval and batch acceptance
   10.1 Type approval
        10.1.1 Type approval for small prismatic cells
               and button cells
        10.1.2 Type approval for cylindrical cells
   10.2 Batch acceptance
Bibliography

BS EN 61951-2