Use the Xtreme Lithium Power CR123A battery from 123ink to power electrical devices that have a high but short-term power demand, such as professional camera flashes. The battery has a voltage of 3V and a capacity of 1600 mAh. One of the many advantages of a lithium battery is its very high energy density of approximately 300 Wh/kg.
Of course this 123ink product also comes with a 100% warranty!