RC Battery Pack: NiMH 9.6V 2100mAh This battery packs is made of 8 x AA 2100mah NiMH Batteries. It is designed for RC cars and airplanes. Dimension 100X14X56 mm Weight 8.6 OZ Type of Battery 8 AA Chemistry NIMH Voltage 1.2 V Capacity 2100mAh Wire Silicon Wire