Battery Backup Calculator

Battery Backup Calculator

Select the type of battery you are using. Enter the current your device uses in milliamperes. Enter the battery’s capacity in ampere-hours.
How is the battery backup time calculated?

The backup time is calculated by dividing the battery capacity (in Ah) adjusted for battery type efficiency, by the device’s current draw (converted from mA to A). This gives the estimated hours the battery can power the device under ideal conditions.

Practical Application:

Use this calculator to estimate how long your device will run on a backup battery under continuous use. This can help in planning for power outages or when using devices in remote locations. Always consider real-world conditions such as battery age and temperature, which can affect performance.