UPair 2 Ultrasonic 5 8G 1KM FPV RC Quadcopter Spare Parts 15 2V 5100mAh 4S Intelligent Battery Description Item Name UPair 2 Ultrasonic 15 2V 5100mAh 4S IntelligentBatteryRated Capacity 5100mAhNominal Voltage 15 2VFlight Time no wind About24mins Charging time 2 2 5hWeight 445gSize 130 x 60 x 85mm Usage For UPair 2 Ultrasonic RC Quacopter Package Included 1 x 15 2V 5100mAh 4S IntelligentBattery