- Duracell Recharge Ultra AAA batteries stay charged for up to 12 months- Unused Duracell Recharge Ultra batteries are guaranteed to last 5 years- Duracell Recharge Ultra batteries come pre-charged, ready to use- Duracell Recharge Ultra batteries can be recharged up to 400 times- Ideal for wireless video game controllers, baby toys, wireless electronics and more- They are available in AA, AAA, C, D and 9V sizes- They work in any NiMH chargerDuracell Recharge Ultra AAA batteries let you charge 400 times and with a Long-Life Ion Core you get amazing power in every battery. Plus, they come pre-charged so you can power your devices right away and will stay charged for up to 12 months, when not in use. Additionally, unused Duracell batteries are guaranteed to last 5 years. These powerful NiMH batteries work in any NiMH charger. With a longer-lasting charge and fewer recharges, Duracell Recharge Ultra batteries really do set themselves apart from the rest.Duracell Rechargeable batteries combine high capacity with the unique Duralock technology, keeping your batteries charged for longer, charge after charge. They are ideal for high-drain or frequently used devices.Duracell Recharge Ultra are suitable for your most high drained devices like your Digital Camera or your wireless game controller. They are coming with the unique Duralock technology and are guaranteed to stay charged up to 12 months being charged*. Available in AA and AAA format, they are also guaranteed to last 5 years** and are are also sold pre-charged so you can use them immediately after buying them.Duracell Recharge Ultra are available in sizes AA, AAA C, D and 9V.*retain up to 80 percent of their charge after 1 year, when not in use** or 300 recharges, whichever comes first