Battery Drain Time Calculator

The Battery Drain Time Calculator helps you estimate the number of hours a battery can power a device based on the battery capacity (in milliamp-hours or mAh) and the load current (in milliamps or mA).

Formula for Battery Life Calculation

The calculation is straightforward:

\[ \text{Battery Life (hours)} = \frac{\text{Battery Capacity (mAh)}}{\text{Load Current (mA)}} \]

Example Calculation

For a battery with a capacity of 3000 mAh powering a device that draws 500 mA:

\[ \text{Battery Life} = \frac{3000 \text{ mAh}}{500 \text{ mA}} = 6 \text{ hours} \]

Importance

Understanding battery drain time is critical for designing efficient devices, choosing the right battery size, and managing battery-powered systems in electronics, mobile devices, and other applications.