IEC 61951-1:20 17规定了二次密封镍镉小型棱柱形、圆柱形和纽扣形电池和蓄电池的标记、名称、尺寸、测试和要求，适用于任何方向，用于便携式应用。 与上一版相比，此版本包括以下重大技术变更: -添加电池类型； -修订图3(6.1.3.1)； -在阳性接触中添加“可选pip”注释； -将引线位置从pip更改为正极触点平面（B和G）。

IEC 61951-1:2017 specifies marking, designation, dimensions, tests and requirements for secondary sealed nickel-cadmium 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;
- revision of Figure 3 (6.1.3.1);
- addition of “Optional pip” note to positive contact;
- changed leader line position from pip to flats of positive contact (B and G).