3.7V 1S Lipo Battery Charger With LED For RC BatteryDescription:Suitable for RCWFLY 7 6II Transmitter 1S 3.7V Li-po BatteryPlug: Futaba PlugInput Voltage: 110V-240VOut put Voltage: About 4.2VOut put Current: 500mAStandard Current: 0.5AFeature:Green light - Standby stateRed light - ChargingGreen light Flashing - Over 4.21VRed light Flashing - Battery error or short circuitWhen the battery voltage reaches about 4.16V red light will turn to green, until it ups to 4.21V.Package Included:1x 3.7V 1S Battery Charger