BAT4AAW 4.8V NiMh AA W4 AA Wide Cell : 4.8V 800mAhUsage and Composition Emergency Lighting, Two Way Radios, Memory Backup Systems, Professional lighting, Emergency Medical Equipment Security Services Nickel Cadmium (NiCd) Battery Specifications Voltage 4.8V Nominal Capacity 800mAh Physical Dimensions Size AA X 4 Wide Width 29mm Height 98mm Weight 100g