Mobile Battery Health Checker

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Enter battery information and select any symptoms for a practical battery health assessment.

Battery statistics

Use values reported by your phone or a trusted battery-information app. Leave a field blank if it is unavailable.

Battery cycle count One cycle equals using a total of 100% battery capacity.

Phone age

Original capacity (mAh)

Current full capacity (mAh)

Battery and charging symptoms

Select every issue that applies. A swollen battery, burning smell, or extreme heat needs immediate attention.

Battery drains much faster than it used to. Phone shuts down or restarts unexpectedly, especially below 20% battery. Charging is unusually slow, intermittent, or stops before reaching 100%. Phone becomes very hot while charging or during light use. Battery or screen appears swollen, lifted, or separated from the phone body.