Potensic RC battery charger, 3.7V 650mAh 25C Lipo Battery(4PCS) with 4 In 1 X4 Battery Charger for Syma X5 X5C X5C-1 X5SW X5SC FJPJ0092 3.7V 650mAh 25C Lipo Battery(4PCS) with 4 In 1 X4 Battery Charger for Syma X5 X5C x5c-1 X5SW X5SC Parts Charger Voltage input: DC 5V; Voltage output: 4.2V 5%; Current output: 350mAh - 410 mAh Charging 4 battery at one time, Over charge protection, Short circuit protection Package Included: 1 charger, 4 650 mAh batteries Battery slightly fat then the original one.