eNDURE AA Charger - eNDURE AA 2-3 Hour Charger includes 4 pre charged AA batteries. Consumers often complain that NiMh rechargeable batteries are not reliable. When left in the camera or stored for a short period of time, they will loose power. Standard Nickel Metal Hydride batteries loose an average of 25% of their power every month, making them unreliable at unexpected times. The new endure Series1 are packed with new features that make using a digital camera more enjoyable. They come pre-charged and ready to use right out of the package. They stay charged for up to 1 year. endure series 1 will retain up to 90% of their power for a year; so they can be stored in a camera for extended periods without fear of drain and loss of power. Endure series1are ready to use at any time. Rapid Charger 2-3 Hours. Built-in Plug (No Cords). Auto Safety Shut Off. Over-Charge Protection. Over-Heat Protection. Charges AA & AAA. 4 AA Endure batteries included.