BPW4-5 6V NiCd D W5 D Wide : 6V 4000mAhUsage and Composition Emergency Lighting, Two Way Radios, Memory Backup Systems, Professional lighting, Emergency Medical Equipment Security Services Nickel Cadmium (NiCd) Battery Specifications Voltage 6V Nominal Capacity 4000mAh Physical Dimensions Size D X 5 Wide Width 66mm Height 99mm Weight 625g