BPS4-3 3.6V NiCd D S3 D Stick Cell : 3.6V 4000mAhUsage and Composition Emergency Lighting, Memory Backup Systems, Professional lighting, Emergency Medical Equipment Security Services Nickel Cadmium (NiCd) Battery Specifications Voltage 3.6V Nominal Capacity 4000mAh Physical Dimensions Size D X 3 Stick Width 33mm Height 180mm Weight 375g