For durability coupled with utility and power, pick up a pack of these Duracell batteries. These AAA-sized batteries are rechargeable and can be used over and over. They are safe and have a long life, especially when used with a charger. They are created from high-capacity NimH, or nickel-metal hydride, according to safety standards, instead of nickel cadmium. They can be used to power any suited device and have an 800mAh capacity.