The voltage of a standard AA battery is 1.5 volts. AA batteries are commonly used in a variety of household devices, including remote controls, toys, and flashlights. They come in different chemistries, the most typical being alkaline and nickel-metal hydride (NiMH) rechargeable batteries. While alkaline AA batteries typically provide 1.5 volts, rechargeable AA batteries such as NiMH usually have a nominal voltage of around 1.2 volts, which can affect performance in some devices. The standard size and voltage make AA batteries one of the most widely used types in consumer electronics.