ampere-hours

**ampere-hours**

Ampere-hours (Ah) is a unit of electric charge commonly used to measure the capacity of batteries. It represents the amount of electric current (in amperes) a battery can supply continuously over the span of one hour. For example, a battery rated at 10 ampere-hours can provide 10 amperes of current for one hour or 1 ampere for 10 hours. Understanding ampere-hours is essential when selecting batteries for devices to ensure they meet the required power and runtime needs.