These high-capacity, low self-discharge batteries, together with our Premium smart chargers will give long operating times (8.5 hrs on High, 15 hrs on Low) and can be recharged over 1,000 times. Our experience is that after about 500 recharges you will see some loss in capacity (~25%) but they are still usable and provide substantial savings over alkaline disposables. Avoid replacing batteries each week, save money, and the environment.