Battery Life Calculator

Battery Capacity

Select Capacity Unit: milliampere-hours (mAh) ampere-hours (Ah)

Current Draw

Select Current Unit: microamps (μA) milliamps (mA) amps (A)

Calculate

Understanding the Battery Life Calculator

The Battery Life Calculator helps you estimate how long a battery will last based on its capacity and the current draw of the device it powers. This is essential for designing and selecting batteries for portable electronic devices to ensure they can operate for the desired duration.

Example Calculation

Let's consider an example to understand how the Battery Life Calculator works:

• Battery Capacity (mAh): 2000 mAh
• Current Draw (mA): 500 mA

The battery life can be calculated using the formula:

Battery Life (hours) = Battery Capacity (mAh) / Current Draw (mA)

Plugging in the values: Battery Life = 2000 mAh / 500 mA = 4 hours.

After entering these values into the calculator and clicking "Calculate," the result should display a battery life of 4 hours.