AA LR6 Alkaline batteries bronze 4-pack - Panasonic

The AA battery is the most used battery in the world and can be found in hundreds of thousands of devices. IEC codes for AA batteries include the popular LR6 for alkaline AA batteries and HR6 for rechargeable NiMH batteries. The standard voltage for these batteries is 1.5 V, while rechargeable batteries generally provide 1.2 V. Newer lithium AA batteries offer a much higher capacity for a slightly higher price. Introduced in 1907, the AA battery size was standardized by the American National Standards Institute (ANSI) in 1947, but had been used in flashlights and electrical novelties for some time before formal standardization. The ANSI and IEC battery nomenclature provides several designations for cells of this size, depending on cell characteristics and chemistry. Each AA battery is 51 mm long and 14 mm in diameter. The formats in which the AA battery is available are as follows: alkaline batteries, saline batteries, long-life lithium batteries, and rechargeable batteries of various capacities. AA alkaline batteries have a shelf life of about 6 years, while the lithium AA equivalents last up to 9 years before use. AA rechargeable batteries are now available in NiMH with capacities up to 2850mAh and are also available in the new "pre-charged" technology that allows you to use them straight out of the package.