This is the AquaCraft 7.2V 1100mAh NiMH Battery for the Hobbico Reef Racer 2 Boat, HCAB14**. FEATURES: Six cells shrink wrapped with wire lead and Tamiya style connector preinstalled INCLUDES: One 7.2V 1100mAh NiMH Battery for the Reef Racer 2 REQUIRES: Charging for 30 minutes and installing in boat If charger is needed use, AQUP9929 SPECS: Length: 2.2" (57mm) Width: 2" (51mm) Thickness: .67" (17mm) Weight: 4.6oz (132mm)