NiMH Rechargeable AA Batteries are designed for high-tech, high-drain devices. Quick and easy to charge. Each lasts for approximately 1,000 charge/discharge cycles (four to five years of normal use). Powerful and durable rechargeable batteries. Particularly well-suited for devices requiring high-energy development over a short time. Offer far higher power reserves than standard alkaline manganese batteries. Ideal for everything from digital cameras, portable cassette players, PDAs, handheld games, portable CD players to notebook computers.