With a cycle life of up to 500 times, this battery pack of four is equivalent to 12,000 single-use batteries*. Pre-charged and is ready to use, it can stay up to 50% charged after 12 months thanks to its low self-discharge rate. With an operating temperature ranging from -20 °C to +50 °C, it delivers reliable performance even in extreme environments. Sustainable? Very. The battery is ECV certified and is made of more than 10% recycled materials (in general, batteries with recycled materials reduce energy usage, consumption of fresh raw materials and pollution). 94%+ of the entire battery pack including the box can also be recycled. *By GP internal lab test, vs GP Super Alkaline batteries in digital cameras.