LONG-LASTING CHARGE REQUIRING FEWER RECHARGES Swap out your traditional AA batteries to Rechargeable Duracell AA Batteries and get the most out of your electronic devices. Duracell's advanced long-life Ion Core Technology lets you power all your essential devices for hours of worry-free run time. These rechargeable batteries can hold its charge close to a year when not in use and are guaranteed to last up to 10 years or 400 recharges, whichever comes first. When it's time for a recharge, simply use any NiMH charger to reload your batteries for all those devices you love, such as high-powered flashlights, battery-powered toys, baby monitors, and more. These Duracell Rechargeable batteries have a battery capacity of 2500 mAh and come in a package of 4.