Notice: Standard Tamiya plug, this plug 2 hole, one is half cicle, another is square hole. Standard Tamiya plug cross-section dimensions 0.52*0.28 in/1.34*1.0cm(LxW).Plug square hole is positive polar, connecting red cable, half circle hole is negative polar, connecting black cable.This battery is 8 Cell AA Battery Packs and Standard Tamiya plug. The replacement NiMH 9.6V 2000mAh battery pack dimensions:L* W *H 4.0"* 2.3"*0.6" . built-in standard Tamiya connector.9.6V Ni-Mh Battery Suitable for various applications, the 9.6V RC battery pack will work with some hobby units such as RC monster trucks, olar express trains,ricochet RC trucks, RC beetles, RC Hummers, Traxx Tyco cars, radio shack RC cars, 1/20 Tanks Charing instructions:Red light is blink when charging, red light is off after battery is full charged.9.6V 2000mAh NiMh Tamiya RC Battery Pack fit for 1/20 RC Tank and Uniway Scale 30KM/H RC Cars, work time is 3-4 times than other 9.6V 700mAH Battery, charge time is 6-10 hours. 9.6V Ni-Mh Battery Suitable for various applications, the 9.6V RC battery pack will work with most hobby units such as RC monster trucks, olar express trains,ricochet RC trucks, RC beetles, RC Hummers, Traxx Tyco cars, radio shack RC cars, 1/20 Tanks Make sure your device battery dimension is same as this one and your battery plug is same as Tamiya standard plug, one hole is half circle,another hole is square,Just as product picture show.NiMH Battery Pack 9.6V 2000mAh High Capacity Rechargeable RC Battery with Standard Tamiya Connector for RC Car, Robots, Security Package include:1 x 9.6V 2000mAh Ni-MH rechargeable Battery With Standard Tamiya plug1 x USB Charger cable