This Watson CR-123A Rechargeable Lithium Battery features a capacity of 600mAh and 3.7V of output power, as opposed to the CR123A standard of 3V. As a result of this increased voltage, it must not be used with devices designed for 3V batteries. This CR-123A is free of memory effect and is rechargeable up to 1000 times. Charge 1 or 2 of them using the Watson Dual Rapid Charger (not included).
Watson CR-123A Rechargeable Lithium Battery (3.7V, 600mAh)