Ideal For Digital & High Drain Devices. Holds Charge up to 5X Longer*. Hold their charge up to a year when not in use. These batteries can be charged hundreds of times. Not only will you get hundreds of uses out of each StayCharged Rechargeable battery with Duralock Power Preserve™ Technology, but they stay charged longer so you can recharge less.* These powerful NiMH batteries are ideally suited for high-drain or frequently used devices. Recharge hundreds of times and save hundreds of dollars.** Use StayCharged Rechargeable batteries with Duralock in high-drain or frequently used devices, including video game controllers & high-power.