AA batteries come in two voltages - 1.5V and 1.2V which is more common on rechargeables. Most modern electronic equipment should take into account the lower voltage of rechargeable batteries.
Duracell make a rechargeable AA HR6/NiMH at 1.2V (the prefix HR refers to rechargeable batteries, as compared to LR which are standard alkaline batteries). They last 25 hours in a wireless game controller based on an ANSI Digital Audio test.
Duracell Rechargeables AA-type come in two varieties - 2400mAh which is called Rechargeable Ultra and Rechargeable Plus which is 1300 mAh. The Ultra and Plus are not marked on the batteries themselves, but the mAh are. From a buyer's perspective, the higher the mAh the longer the battery will last. An analogy is the size of a gas tank. A possible way to increase mAh is to increase the strength of the electrolytic solution in the battery. They are made in Japan.
NiMH stands for Nickel metal-hydride and these types of batteries were invented in 1967. The European Union Battery Directive caused NiMH batteries to replace Ni-Cd batteries for portable consumer use. Metal hydrides are metals bonded with hydrogen often in a covalent bond, where atoms share electrons.
Duracell make a rechargeable AA HR6/NiMH at 1.2V (the prefix HR refers to rechargeable batteries, as compared to LR which are standard alkaline batteries). They last 25 hours in a wireless game controller based on an ANSI Digital Audio test.
Duracell Rechargeables AA-type come in two varieties - 2400mAh which is called Rechargeable Ultra and Rechargeable Plus which is 1300 mAh. The Ultra and Plus are not marked on the batteries themselves, but the mAh are. From a buyer's perspective, the higher the mAh the longer the battery will last. An analogy is the size of a gas tank. A possible way to increase mAh is to increase the strength of the electrolytic solution in the battery. They are made in Japan.
NiMH stands for Nickel metal-hydride and these types of batteries were invented in 1967. The European Union Battery Directive caused NiMH batteries to replace Ni-Cd batteries for portable consumer use. Metal hydrides are metals bonded with hydrogen often in a covalent bond, where atoms share electrons.
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