The GP CR123a is one of the best Photo Batteries out there, GP power for a fantastic price. Battery Details (CR123a Lithium Battery) Battery Technology: Lithium (Single Use) Capacity: 1300.0mAh Current: 0.5000A Diameter: 17.0mm Height: 33.4mm Voltage: 3.00V Weight: 17.0g Replaces: 123, 123A, BR2/3A, CR123, CR123A, CR123R, CR17335, CR17345, DL123A, EL123AP, K123LA, L123A, PL123