4 BATTERIES AA LR6 - PANASONIC

The AA battery is the most widely 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 AA alkaline batteries and HR6 for rechargeable NiMH batteries. The normal voltage of these batteries is 1.5 V, while rechargeable batteries generally supply 1.2 V. The new AA lithium batteries offer a much higher capacity at 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. ANSI and IEC battery nomenclature give several designations for cells of this size, depending on cell characteristics and chemistry. Each AA cell has a length of 51 mm and a diameter of 14 mm. The formats in which AA batteries are available include alkaline, saline, long-life lithium and rechargeable batteries of various capacities. AA alkaline batteries have a storage life of around 6 years, while AA lithium equivalents last up to 9 years before use. AA rechargeable batteries are now available in NiMH with capacities of up to 2850mAh, and are also available in the new "pre-charged" technology that lets you use them straight from the pack.