Recyko Charge 10 AA NiMH rechargeable batteries contain a specially engineered chemistry that enables them to be charges in 10 minutes* with the Charge 10 Ultra-Fast Charger. With high performance attributes and a cycle life of 700 times**, it is ideal for power-intensive devices. This battery comes pre-charged and ready to use. And whats more, it retains up to 80% of its power after 12 months. With an operating temperature ranging from -20C to +50C, it delivers reliable performance even in extreme environments.