Features:Internal charging indicator, charging output with reverse plug protection, Intelligent load protection, avoid overload current and voltage input to cause damage.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.3.7V 500mAh rechargeable lithium polymer battery, battery charger.3.7V Charger with XH2.54 connector, fit most 3.7V Battery for RC Quadcopter ,RC Boat, RC Drone,and RC Truck. Package Includes:1x USB Charger Specifications:Material:PVCInput:5V 0.5-2AOutput:3.7V 500mAhStandard Voltage:4.2VPlug:XH2.54Cable Length:Approx.67cm/26.38in note: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.