Features: Internal charging indicator, charging output with reverse plug protection, Intelligent load protection, avoid overload current and voltage input to cause damage.OOTDTY  Simple LED indicators show your battery charge status. It will automatically turn off when fully charged.The plug adopts a snap-on design, which is safe and tight for charging without leakage.11.1V 500mAh rechargeable lithium polymer battery, battery charger.11.1V Charger with 4 pin connector, fit most 11.1V Battery for RC Quadcopter ,RC Boat, RC Drone,and RCSpecification: Material:PVCInput:5V 1-2AOutput:11.1V 500mAhStandard Voltage:11.1VPlug:4 PinPackage Includes: 1x USB Chargernote: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.