BAT4AAS 4.8V NiMh AA S4 AA Stick Cell : 4.8V 800mAhUsage and CompositionEmergency Lighting, Two Way Radios, Memory Backup Systems, Professional lighting, Emergency Medical Equipment Security ServicesNickel Cadmium (NiCd)Battery SpecificationsVoltage 4.8VNominal Capacity 800mAhPhysical DimensionsSize AA X 4 StickWidth 14.5mmHeight 200mmWeight 100g