The 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 battery. 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 Features: Detect current rate and capacity of individual cell Identify the Cell Count Automatically Auto Charger and Auto Cut-Off for Safety Teperature Protection Fuction. Adjust Charge Power Automatically when heated.