This is the Duratrax Onyx 7.2V 1800mAh NiCd Stick Battery Pack with Standard Connector. FEATURES: Sport pack for cars, trucks, boats and more that require a stick pack configuration with Standard connector INCLUDES: 7.2V 1800mAh NiCd Stick Battery Pack with Standard Connector REQUIRES: NiCd compatible charger SPECS: Capacity: 1800mAh Number of Cells in Series: 6 Rated Voltage: 7.2V Min. Discharge Voltage: 5.4V Maximum Recommended Charge Current: 3.6 amps Discharge Lead: 16AWG 2.75" (70mm) long wire w/Standard connector Pack Dimensions: 5.2 x 1.8 x 0.9" (131 x 46 x 24mm) Weight: 11oz (311g) Number of Welds Per Connection: 4 spot welds on heavy duty tabs Cell Size: Sub-C jxs 7/06/09 ir/jxs