Battery Info: Health & Charger

The most detailed battery info app — see your battery health the moment you install it.

■ Battery Health (SOH)
Estimates your battery's real capacity vs. design capacity by integrating measured mAh across charge sessions. Confidence grades (high/medium/low) and a trend chart show you the evidence, not just a number.

■ Charger Tester
Every charge session records the real delivered power (W) and automatically builds a profile for each charger and cable you use.
• Charger performance ranking
• Verdicts: Normal / Below expected (bad cable or counterfeit charger) / Slow
• Detects cables getting slower over time

■ Real-time Info
Voltage, current, temperature, power (W) and charging state — live. Home screen widget, Quick Settings tile and a live status-bar notification included.

■ Charging & Discharging Science
• Time-to-full estimate and per-session charged mAh
• Screen-on/off drain rates, deep sleep efficiency, remaining time estimate
• Target charge alarm (e.g. 80%) and high-temperature warning

■ Stats & History
Real-time / daily / weekly charts, 24-hour daily activity timeline, charge history, CSV export and JSON backup & restore.

■ Privacy
All measurements stay on your device. No account, no sign-up.

Note: some values depend on sensors provided by your device manufacturer; unsupported items are transparently marked as "estimated" or "not supported". A non-root app cannot physically stop charging — the target alarm notifies you instead.