BPS4-3 3.6V NiCd D S3 D Stick Cell : 3.6V 4000mAhUsage and CompositionEmergency Lighting, Memory Backup Systems, Professional lighting, Emergency Medical Equipment Security ServicesNickel Cadmium (NiCd)Battery SpecificationsVoltage 3.6VNominal Capacity 4000mAhPhysical DimensionsSize D X 3 StickWidth 33mmHeight 180mmWeight 375g