Standard CapacityIt's the perfect battery for everyday use devices that often need to be recharged, such as wireless game controllers,LED flashlights, remote controllers etc..Built to Last: Conventional rechargeable batteries lose their charge daily, but not FUJITSU high charge retention batteries.They retain their energy even after 1 year storage.Environmental FriendlyPre-charged at the factory before shipping.Partialy Charged by solar energyFujitsu Rechargeable Battery" can be used at temperature as low as -20 degrees.Rechargeable up to 2,100 times. Low self-discharge retains 70 percent after 5 years of storage. Suitable for low temperature as -20 degree centigrade, (pack of 4).