The ampere, often shortened to “amp”, is the base unit of electric current in the International System of Units.
An ampere hour or amp hour is a unit of electric charge or current flow over time.
Formula to calculate amps hours.
![Calculate Amps Hours.](https://www.learntocalculate.com/wp-content/uploads/2020/08/AMps-hours.png)
Example:
Suppose a battery provides 200 Amps for 3 hours. Calculate the electric charge in amp hours.
![Calculate Amps Hours.](https://www.learntocalculate.com/wp-content/uploads/2020/08/AMps-hours-2.png)
Thus, the battery’s electric charge was 600 amps hour.