Battery planning tool
Battery Life Estimator
Estimate battery endurance from capacity and typical activity assumptions. These are estimates, never measured tests or reviews.
Adjust the battery and daily-use settings to see an estimated range.
Set your battery and usage
Adjust the inputs to see how the estimate changes.
Phone specifications prefilled below. You can edit every value.
Daily usage hours
Set the typical time you spend on each activity in one day.
Assumptions used
Approximate nominal voltage: 3.85V. Usable capacity: 90%. Estimates use typical activity power assumptions last reviewed 2026-10-26.
How this estimate works
A capacity-based illustration, not a device test.
Capacity is converted to approximate watt-hours using the configured nominal cell voltage and usable fraction. Typical activity power assumptions are then adjusted for brightness, refresh rate, 5G and battery health. A range is shown because real use varies.
Data and assumptions