For KAICOM K7-40
3.85V 4800mAh/18.48WH
For KAICOM WDT-520 420 K2 585
3.7V 4000mAh/15.96WH
For KAICOM K, K7-10
3.7V 4000mAh
For KAICOM WDT585 585P 520 520S 521 550 420