SQU-1711 Battery For Thunderobot 911 911Air 911ME 911S 911Targa Series - Compatible Model Numbers:  Thunderobot 911 Air, 911Air, 911ME, 911S, 911Targa, G7000M, G8000M, Thunderobot 911 Series 911M - Battery Type: Li-ion, Battery Volt: 11.55V, Capacity: 51.