Contains 48 pack of Tenergy Alkaline AA batteries 1.5V alkaline batteries designed for everyday applications like wireless mouses, keyboards, clocks, flashlights, toys, remote controllers. Anti-leaking tight seal design and date coded freshness, holds the power in for up to 10-years until it is needed. Batteries AA size can be used in temperatures as low as -4°F degrees or as high as 129°F degrees. These are one time use disposable batteries AA. Please DO NOT recharge these AA batteries.