Hexfly HX-403 Dual Port 2S, 3S, 4S AC/DC LiPo LiFe Battery ChargerThe Hexfly HX 403 charger is an easy to use multifunctional charger with built in LiPo balancing for 2S 4S LiPo or LiFe batteries. You can charge two 2S batteries at the same time or one 3S or 4S batteries. With built in power supply, the HX 403 is an all in one package at a price that is hard to beat. Specifications: Input Voltage AC 100~240V DC 10~18V Current Rate Range 0~3. 0A Support for Charging 2s*2 3s 4s (cells) Support JST HX 2. 5 Connector