SOUTH NB-36 7.4V / 2600mAh/19.24Wh
SOUTH LI-20 7.4V / 2000mAh/14.8Wh
SOUTH NB-35 6V / 3500mAh/21Wh
SOUTH NB20A NB-20A NB-20C 6V / 3500mAh