Compact Lithium-Ion battery for the AK System with a voltage of 36 V and a capacity of 72 Wh. Battery life depends on the device type. With charge level indicator (LED). Compatible with AL 101, AL 301 and AL 500 chargers.

| Battery weight | 0.8 kg |
| Rated voltage | 36 V |
| Energy content | 72 Wh |
| Rated capacity as per IEC 61960 | 2 A·h |
| Rated cell capacity (as per manufacturer data) | 2 A·h |