Battery Health Estimator
Estimate remaining battery capacity
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Watch the walkthrough before you answer. It explains which choices matter most, then you can continue to the self-check below.
Video walkthrough
How to use the Battery Health Estimator
Estimate your phone's battery health
Don't have a Battery Health screen? This tool estimates remaining capacity from charge cycles, age, and usage pattern. Calibrated on our 47-device test set.
Estimated capacity
Excellent — like new
- Cycles used / rated420 / 1000
- Estimated years to 80%~1.6 yr
- Service recommendationNo service needed
Why this tool exists. Apple rates these for 1,000 cycles to 80%. If you have Settings → Battery → Battery Health on your iPhone, use that number — it's measured, not estimated. This tool is for Android users (most don't show capacity), users without the setting, or anyone double-checking.