Duracell Ultra batteries are specially formulated to meet the increasing power demands of a new generation of high power devices. Highly recomemmnded by Surefire, Inova & Streamlight for their flashlights the Duracell ULTRA DL123A batteries are an exact equivalent for any and all CR123A applications. Lithium CR123A 3V Photo Battery # Battery Details (CR123A Lithium Battery) # Battery Technology: Lithium (Single Use) # Capacity: 1550.0mAh # Current: 0.5000A # Diameter: 17.0mm # Height: 33.4mm # Voltage: 3.00V # Weight: 17.0g # Chemical System: Lithium / Manganese Dioxide (Li/MnO2) # Replaces: 123, 123A, BR2/3A, CR123, CR123A, CR123R, CR17335, CR17345, DL123A, EL123AP, K123LA, L123A, SF123A, VL123A, 5018LC