UNE-EN 61951-1:2014

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
       5.1.2 Cylindrical cells
       5.1.3 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 batteries
              6.1.2.2 Cells not dimensionally interchangeable
                       with primary batteries
  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 -18 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 and cylindrical cells
              7.4.1.2 Cylindrical cells (accelerated test procedures)
              7.4.1.3 Button cells
       7.4.2 Permanent charge endurance
              7.4.2.1 Small prismatic cells
              7.4.2.2 L, M, H or X cylindrical cells and L, M or H
                       button cells
              7.4.2.3 LT, MT or HT cylindrical cells
  7.5 Charge acceptance at constant voltage
  7.6 Overcharge
       7.6.1 Small prismatic cells
       7.6.2 L, M, H or X cylindrical and button cells
       7.6.3 LT, MT or HT cylindrical cells
       7.6.4 R cylindrical cells
  7.7 Safety device operation
  7.8 Storage
  7.9 Charge acceptance at +55 degree C for LT, MT or HT cylindrical
       cells
  7.10 Internal resistance
       7.10.1 Measurement of the internal a.c. resistance
       7.10.2 Measurement of the internal d.c. resistance
8 Mechanical tests
9 Type approval and batch acceptance
  9.1 Type approval
       9.1.1 Type approval for small prismatic cells
       9.1.2 Type approval for cylindrical and button cells
  9.2 Batch acceptance
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography

Gives marking, designation, dimensions, tests and requirements for portable sealed nickel-cadmium small prismatic, cylindrical and button rechargeable single cells, suitable for use in any orientation.