Understand your Android battery — honestly.
Battery Health estimates battery health with visible confidence, tracks every charge, finds draining apps, and alerts you before damage — all processed on your device. No fake precision. No subscription.
Requires Android 8.0 (API 26)+ · Free download · Pro features
- Privacy-first
- Data stays on your device
- No account
- No registration required
- Works offline
- Core features need no server
- Zero required permissions
- Unlocks progressively
- No subscription
- One-time Pro upgrade
- Honest estimates
- Every number labeled
What it does
One app, the full battery picture
Battery Health brings health estimation, charging analytics, drain insights, and smart alerts into a single, privacy-first Android app.
Battery health
Estimated capacity with an honest confidence score, computed from your real charging behavior.
Charging monitor
Every session tracked — duration, power gained, and a 4-point quality rating.
Battery drain
See which apps impact your battery most, ranked by estimated drain.
Smart alerts
Charge level, overheat, and fast-drain notifications — cooldown-throttled.
Charging habits
On-device, rule-based coaching for temperature, overnight drain, and dwell habits.
Private by design
Everything processed locally. No account, no servers, no data leaving your phone.
Estimated battery health
Why we say “estimated”
Every health number is an estimate — and we tell you how good.
Android doesn't expose a simple battery-health percentage. Battery Health infers capacity from how your device actually charges, then labels each result with a confidence level so you know what to trust.
Charge-counter chip present. Readings are reliable.
Estimated from voltage curves. Useful, less precise.
Limited hardware data. Treated as a rough indicator.
Most battery apps invent a confident number. We’d rather be honest: a low-confidence 85% means less than a high-confidence 90% — and you deserve to know the difference. How estimation works →
Every charge, scored
Battery Health records each charging session — duration, power gained, and temperature — then rates it across Speed, Temperature, Stability, and Completion. Compare chargers and cables to find your fastest, safest setup.
- Automatic session tracking the moment you plug in
- 4-point quality score, not a single vague number
- Charger and cable profiles inferred from observed behavior
Find what's actually draining you
Grant Usage Access and Battery Health ranks your apps by estimated battery impact — so you know whether it's the screen, a background sync, or a runaway app eating your charge.
- Per-app drain estimates from Android's UsageStats
- Clear disclaimers about estimation accuracy
- Background-vs-foreground breakdown where available
- Screen34%
- Maps22%
- Browser14%
- Mail9%
- Other21%
Estimates from UsageStats · on-device only
Alerts that protect your battery
Set charge-level alerts at 80%, 90%, or 100%. Get warned when the battery overheats or drains unusually fast while idle. Alerts are cooldown-throttled so they inform, not spam.
- Charge-level, overheat, and fast-drain alerts
- Custom thresholds (Pro) for your habits
- All evaluation happens on-device
A coach, not a nag
Rule-based recommendations surface patterns in your charging behavior — high-temperature trends, overnight drain, and high-charge dwell — generated entirely on your device. No AI hype, no network calls.
- Tips grounded in your actual charging history
- Configurable thresholds, fully offline
- No cloud, no model inference, no tracking
- Charge peaked at 100% for 3h — try unplugging sooner
- Battery ran warm during 2 sessions
- Overnight drain averaged 4% — healthy
- Use the 80% alert to reduce dwell time
Rule-based · generated locally · no network
Privacy architecture
Private isn't a marketing word here
Battery Health was designed so your battery data never needs to leave your phone — and so the app is useful without demanding a single permission upfront.
Local processing
Battery signals are read and analyzed on your device. The app has no server to send them to.
No account, ever
There is no registration, no login, no profile. Your battery history is tied to your phone, not an identity.
Progressive permissions
The dashboard works with zero permissions. Live monitoring and drain insights unlock only if you choose.
Full data control
Export to CSV, recalibrate, reset, or delete everything — including preferences — at any time.
How it works
From battery signal to honest insight
No magic, no servers. Just local processing of the signals Android already provides.
- 1
Android signals
Battery level, voltage, temperature, charging status — read from the system.
- 2
Collect locally
Battery Health captures snapshots on your device. No upload, ever.
- 3
Analyze
Charging sessions, drain patterns, and cycle behavior are computed.
- 4
Estimate
Health is inferred from real charging behavior — and labeled as an estimate.
- 5
Communicate
A confidence score tells you how much to trust each number.
- 6
Stay private
Insights remain on the device. Delete everything anytime.
Who it's for
Built for anyone who owns an Android battery
Wondering if your battery is degrading
Track estimated capacity over weeks and watch the trend — with confidence that reflects your hardware.
Battery dying too fast
Find the app or behavior responsible with drain analysis, not guesses.
Protecting a phone for the long haul
Charge-level and overheat alerts keep you from the habits that age a battery fastest.
Caring about privacy
A battery app that needs no account and sends nothing anywhere — because that shouldn't be rare.
FAQ
Questions, answered honestly
- How do I install the app?
- Battery Health is available on Google Play. Install it from the listing: https://play.google.com/store/apps/details?id=com.batteryhealth.monitor
- What is battery health?
- Battery health is a measure of how much capacity your battery can hold compared to when it was new. As batteries age through charge cycles, heat, and time, that capacity declines. Battery Health estimates this figure from how your device actually charges.
- How accurate is battery health estimation?
- It's an estimate, not a measurement. Android doesn't expose a single precise health figure. Battery Health infers capacity from charging behavior and labels each result with a confidence level — High, Medium, or Low — so you know how much to trust it.
- Does the app require internet or collect my data?
- No. Battery Health works fully offline for all core features. Your battery data stays on your device — there's no account, no sync, and no server it uploads to.
- Does it require permissions?
- No required permissions. The dashboard works the moment you install it. Live charging monitoring needs notification permission, and per-app drain insights need Usage Access — both optional and granted by you.
- Is there a subscription?
- No subscription. Battery Health is free with thin ads on a few screens, and a one-time Pro upgrade removes ads and unlocks longer history, custom alert thresholds, and unlimited CSV export.
- Which Android versions are supported?
- Android 8.0 (API 26) and above.
Start understanding your battery today
Battery Health is free to download — battery insights, charging analytics, and smart alerts, with your data staying exactly where it belongs.