For GIgaset PHONE
3.8V 2500mAh/9.5WH
For GIGASET ME pro, GS57-6
3.85V 4000mAh/15.4WH
For GIGASET GS55-6
3.8V 3000mAh/11.4WH
For Gigaset Me Pure GS53-6
3.8V 3200mAh/12.16WH
For Gigaset G1 Phone
3.85V 4850mAh/18.67WH