Estimate battery runtime from capacity and load current.
Battery runtime is estimated by dividing battery capacity by the average load current.
The calculator applies the formula above to the values entered in the form and returns the calculated engineering result instantly.
Real runtime can be lower because of converter losses, temperature, battery age and discharge curve.
This online calculator is intended for fast engineering estimates. For production hardware, verify the result with datasheets, manufacturer recommendations and real measurements.
Estimate battery runtime from capacity and current consumption. This tool is designed for fast electronics engineering estimates directly in the browser.
Enter the known values, press Calculate and compare the result with your design requirements. For reliable hardware, always check component datasheets, tolerances, temperature limits and manufacturer recommendations.
Is this calculator suitable for production design?
It is useful for estimates and early design work. Final production designs should be verified with real measurements and datasheets.
Does the calculator work on mobile?
Yes. EngiCalc tools are lightweight, responsive and designed to work on desktop and mobile devices.
This calculator is used for quick electronics engineering estimates, formula checks and early circuit design decisions.
The result is based on the displayed formula and input values. Real hardware can be affected by tolerances, temperature, layout and component limitations.
Use it as an engineering estimate. Always verify final production designs with datasheets, simulations, manufacturer recommendations and measurements.
The Battery Life Calculator is used for quick engineering estimates and early design checks. Always verify final values with datasheets, measurements and real operating conditions.
The result is an estimate based on the entered values and formulas. Real circuits can differ because of tolerances, temperature, PCB layout, losses and component limitations.
Check component ratings, voltage and current limits, thermal margin, layout, safety requirements and real measurements under load.
Runtime can be lower because of regulator losses, battery voltage sag, temperature, cutoff voltage, aging and peak current demand.
Average current is usually the most important value for runtime, especially in sleep-heavy IoT devices.