This is the Traxxas 8.4V 3300mAh Hump NiMH Battery Pack.
FEATURES: New high current connector with gold-plated copper terminals
iD Auto Battery Identification allows Traxxas iD equipped chargers to
automatically set and optimize charge settings
MAXX cable high-efficiency 12 gauge silicone jacketed wire
Sub C size cells
INCLUDES: 7-cell 8.4V 3300mAh iD Power Cell NiMH Hump NiMH Pack with High-
REQUIRES: NiMH compatible charger
SPECS: Length: 5.4" (138mm)
Width: 1.9" (47mm)
Height: 1.7" (42mm)
Weight: 15.5oz (440g)
Charge Rate: 3A
BOX DIMENSIONS: 2.13" W. X 2.00" H. X 6.50" L.
BOX WEIGHT: 1.02 LBS.