The Panasonic Pro AAA batteries Powered by eneloop which provides 950 mAh of performance for long lasting, high power capacity, extreme applications. Pro battery is a perfect choice for powering high current consuming devices such as photo strobe flash lights; providing more than twice the number of flashes per recharge in less than half the time as compared to conventional alkaline batteries! Wireless keyboards, mice, game controllers, radio controlled toys and a range of household devices can all realize extended performance when powered by Pro batteries. The Pro batteries excel in extreme conditions where high power performance in very low temperature environments (down to -4 degrees Fahrenheit) is needed. The Pro Nickel Metal Hydride batteries retain up to 75% of their capacity even after one year of storage. Unlike regular alkaline batteries which can only be used once and are wasteful to the environment, the Pro batteries can be recharged up to 500 times. They come pre-charged and can be used immediately out of the pack. Pro Powered by eneloop batteries deliver reliable, high power battery performance when and where you need it most!