Energizer Rechargeable Batteries - Reusable Power You Can Depend On! Energizer Rechargeable batteries are highly recommended for high-drain or frequently used devices - ones that you use more than once a week - such as digital cameras, portable audio players, two-way radios, handheld games, and GPS equipment. They are also recommended for toys, infant devices, and PDA\'s. For best results, pair your Energizer Rechargeable batteries with Energizer chargers. Can be charged 100\'s of times. Hold their charge for up to 6 months.