A AAA battery, also known as a triple-A battery, is a standard size dry cell battery measuring approximately 10.5 mm (0.41 inches) in diameter and 44.5 mm (1.75 inches) in length. This measurement includes the positive terminal button, which adds a minimum of 0.8 mm (0.031 inches) to the overall length.
Dimensions and Variations
While the standard dimensions are widely accepted, slight variations may exist depending on the manufacturer. Some sources indicate a length closer to 45 mm. It's crucial to remember that these are approximate measurements; minor discrepancies might occur.
- Diameter: ~10.5 mm (0.41 in)
- Length: ~44.5 mm (1.75 in) (This can vary slightly, up to approximately 45 mm)
Some websites and resources provide slightly different measurements, but the variations are minimal and generally fall within acceptable tolerances for manufacturing. For example, Batteries4pro lists dimensions of 10.5 mm diameter and 45.0 mm length for a AAA cell. (https://www.batteries4pro.com/en/blog/26-sizes-and-formats-of-cells-and-batteries) Amazon lists the dimensions as 1.75" x 0.41" which are very close approximations of the metric measurements. (https://www.amazon.com/Pack-LR03-MN2400-Alkaline-Battery/dp/B01IQX5E7G)
Common Uses
AAA batteries are commonly found in many low-drain portable electronic devices, such as:
- Remote controls
- Flashlights
- Toys
- Clocks
- Small electronic devices
