This is a Venom Racing 6-Volt 1200mAh NiMH Receiver Hump Pack Battery for use in Off Road Nitro Vehicles.
Venom's Receiver Packs - When it comes to powering your electronics, Venom Racing has you covered!
5-Cell Standard Hump
Universal Type Connector
One 5-Cell 6V 1200mAh Rx Battery Pack
Length: 2.00" (50.08mm)
Width: 1.12" (28.44mm)
Height: 1.25" (31.75mm)
Weight: 4.05oz (115g)
These can be used in any vehicle that can use this configuration