This is the DuraTrax NiMH 7.2V 2500mAh Onyx Stick Battery Pack with Standard Connector.

FEATURES:
Ideal sport pack for cars, trucks and boats

INCLUDES:
DuraTrax NiMH 7.2V 2500mAh Onyx Battery with Standard Connector

REQUIRES:
NiMH compatible charger such as the Duratrax Onyx series

SPECS:
Capacity: 2500mAh
Number of Cells in Series: 6
Rated Voltage: 7.2V
Min. Discharge Voltage: 5.4V
Maximum Recommended Charge Current: 4 amps
Discharge Lead: 14AWG 2.7" (70mm) long wire w/Standard connector
Pack Dimensions: 5.2 x 1.9 x 0.9" (131 x 47 x 24mm)
Weight: 12 oz (328 g)
Number of Welds per Connection: 6 spot welds
Cell Size: Sub-C