uxcell 7.4V 11.1V 2-3 Cells 2S 3S RC LiPo Li-Poly Battery Safe DC Charger Balance Charging Fast Battery Charger for 2-3 batteries at the same time. Intelligence: charging Indicator Light Shows Charging Status. Safety technical: Short circuit Protection with Over-Charge Protection. DC 7.4V/11.1V, 800mA output voltage, two JST male connector. Compatible for different kinds of RC Quadcopter battery.