Battery Bench & Diagnostic

Is your phone as healthy as it looks? Battery Bench is a real battery benchmark and puts it under real load and tells you, in plain words, how the battery, the processor and the rest of the hardware hold up.

Pick the tests, set the duration, tap START. Battery Bench does the rest and writes a clear report at the end.

SIX STRESS TESTS, ONE TAP
• CPU: every core at full load, each result checked against a reference value.
• GPU: continuous OpenGL ES rendering with image checksums that catch graphics errors.
• RAM: adaptive memory test that writes and verifies data patterns.
• STORAGE: sequential write and read, verifying every block it reads back.
• NETWORK: Wi-Fi upload and download at full speed. Mobile data is never used: if Wi-Fi drops, a kill switch stops all traffic instantly.
• SCREEN: maximum brightness with the screen kept on, watching for display freezes.
Combine them freely, from 1 minute up to 12 hours, while battery and device temperatures are tracked for the whole test.

BATTERY HEALTH CHECK
• Health score from 1 to 10 and state of health in %, with its margin of error shown honestly.
• Design capacity versus real full charge capacity, in mAh.
• Charge cycle count (where Android exposes it), remaining charge, voltage, current and power.
• Self-calibrating: charge to 100% with the app open and every later reading gets more accurate.
• Readings taken at the exact moment the charge level changes and saved over time, so results stay consistent from one check to the next.

LIVE DASHBOARD
Battery and device temperature, voltage, current (mA), power (W), charge level, CPU and GPU load and throughput in MB/s, updated every second.

REPORTS THAT EXPLAIN, NOT JUST NUMBERS
• Clear summary: average and peak current, battery drain, temperature range, thermal throttling detection and the system thermal status from the official Android API.
• Prudent diagnosis: every error is re-checked at once and labelled as transient, reproducible, external (for example a network problem) or a protective stop, so a hiccup is never mistaken for a hardware fault.
• Black box: if the phone reboots or shuts down mid-test, the report is recovered at the next launch.
• Share the full report as text with one tap.

BUILT-IN SAFETY
Safety cutoffs stop every test immediately if the battery or the CPU gets too hot, if Android reports a severe thermal state, or if the battery runs low while unplugged.

RUNS IN THE BACKGROUND
Long tests keep going with the screen off. A notification shows live values and the time left, with a STOP button always at hand.

PRIVACY FIRST
No account, no personal data collected. Reports leave your phone only when you share them.

WHO IT IS FOR
• Buying or selling a used phone? Check the battery and the hardware in minutes.
• Repair technicians: verify a battery or board replacement under real load.
• Enthusiasts: compare thermal throttling, temperatures and power draw between devices.
• Everyone: find out whether heat or a worn battery is behind sudden shutdowns, lag or fast battery drain.

Battery Bench is a stress-test tool: it deliberately loads the hardware. Use it on devices in good condition and read the safety notice shown at first launch.