Battery life calculation

Battery rated capacity: milliampere hours
Load current milliamperes
Estimated battery life hours

What is Battery Life Calculation?

Battery life calculation is the process of determining how long a battery will last based on its capacity, load current, and other factors like efficiency and temperature.

Why Battery Life Calculation?

It helps in designing efficient electronic devices, preventing unexpected power failures, optimizing battery usage, and choosing the right battery for a specific application.

How to Calculate Battery Life?

The basic formula is:

For example, if a 2000mAh battery powers a device consuming 500mA, the battery will last:

Other factors like discharge rate, efficiency, and temperature impact actual performance.

When is Battery Life Calculation Needed?

It’s essential when designing electronic gadgets, selecting batteries for portable devices, planning power backup systems, or estimating runtime in critical applications like medical devices or remote sensors.