*Based on ideal conditions. This is the Battery Run Time Calculator. By providing the battery capacity and device consumption, the calculator will estimate how long the battery will last, and the time can be converted between hours, days, weeks, months, and years.
This battery life calculator finds out the approximate runtime of your battery based on the following formula: where: Consumption – Average current draw of your electronic device, expressed in amperes. (If you want to learn more about the electric current, make sure to check out the Ohm's law calculator!); and
It gives you a realistic approximation of the battery runtime based on its capacity and your device's energy consumption. You can use this battery calculator in two ways. The default mode assumes that the battery runs continuously until it is discharged.
The application of this calculator is when designing a microcontroller, IoT, edge, or other battery-powered project. It will help you determine how long the system can run off of a single battery before replacement or recharge and supports complex operating modes with different duty cycles and power consumption rates.
This calculator will take your project’s battery capacity and determine its lifetime based on the following parameters: To find battery lifetime, divide the battery capacity by the average device current consumption over time.
Find out what your device's battery capacity is. Usually, this value is printed on the battery. Determine what the discharge safety of your device is. If unknown, you can assume a discharge safety of 20%. Establish the average consumption of your device (average current draw). That's it! Now you know how to calculate your battery's runtime!