4200 mAh, 8.4v NiMH 7cell Hump Battery Pack, TRX iD connector

Battery 7-CELL NiMh Hump Pack W/New TRX iD connector, connector is backwards compatible with old style TRX HC connector.

Capacity: 4200 mAh

Max Charger Current: 5amps

Voltage: 8.4 volts

Note: Make sure your speed controller is compatible with 8.4volt packs. Also ensure that it is not set on LiPo mode or it won't run for more than just a few seconds before it hits the lipo voltage cutoff.