BPW4-4 4.8V NiCd D W4 D Wide : 4.8V 4000mAhUsage and CompositionEmergency Lighting, Two Way Radios, Memory Backup Systems, Professional lighting, Emergency Medical Equipment Security ServicesNickel Cadmium (NiCd)Battery SpecificationsVoltage 4.8VNominal Capacity 4000mAhPhysical DimensionsSize D X 4 WideWidth 66mmHeight 120mmWeight 500g