2-pack of Energizer Recharge Universal 2500 mAh NiMH D rechargeable batteries Each battery can be charged hundreds of times, with a charge that can last up to 12 months in storage Extended Life Composition ensures up to 3-year usable battery life under typical usage patterns Delivers long-lasting power to devices you love like toys, portable stereos, and flashlights Tops the charts as the world's #1 recharge Sub Brand, based on scan sales