With a longer-lasting charge and fewer recharges, Duracell Rechargeable batteries set themselves apart from the competition. Get hundreds of uses out of each Duracell rechargeable battery and save hundreds of dollars. • Come pre-charged and work in any NiMH charger  • Long-life Ion Core packs power in every battery  • Duralock Power Preserve™ Technology holds a charge for up to 1 year  in storage  • Duracell rechargeable batteries are guaranteed to last 5 years  • Recharge up to 400x  • 50% longer-lasting per charge Our powerful NiMH batteries with Duralock are well suited for high-drain or frequently used devices, including: • Video Game Controllers • High-powered Flashlights  • Baby monitors and more