ShowJade TM Geninus Syma original 3.7V 500mAh 25C Lipo Battery(5PCS) with 5 In 1, X5 Battery Charger for Syma X5 X5C Parts 3.7V 500mAh 20C Lipo Battery(5PCS) with 5 In 1 X5 Battery Charger for Syma X5 X5C Parts Package Included: 1 5n1 usb charger, 5pc 500 mAh batteries, Charger Voltage input: DC 5V; Voltage output: 4.2V  5%; Current output: 350mAh - 410 mAh ShowJade Registered Prodcuts Charging 5 battery at one time, Over charge protection, Short circuit protection