This is the Venom-Racing 8.4V 4200mAh NiMH Hump Battery Pack. ven-1546-7t

FEATURES: Delivers maximum punch and run time for demanding R/C racers

INCLUDES: Venom-Racing 7 cell 8.4V 4200mAh NiMH Hump Battery pack with
Traxxas type connector

REQUIRES: Charger capable of charging NiMH batteries, such as the Duratrax
Intellipeak series or the Great Planes Triton series

SPECS:

Length: 5.31" (135mm)

Width: 1.85" (47mm)

Thickness: 1.73" (44mm)

Weight: 17.01 oz (485g)