Battery Check: Monitor & Care

See what your battery is doing right now, and get straight answers about drain and charging.

Battery Check shows the readings your phone actually reports, keeps a battery history, runs simple drain and charging checks, and explains each result in plain language, including what it can't tell you.

FREE
• Everyday tracking: brief background readings about every 15 minutes when Android allows. No always-running service.
• Battery history: the last 24 hours as a chart with gaps and charging shown, and estimates of time left and time to full from this phone's own readings.
• Charging diary: each charge your readings picked up in the last 24 hours, with duration, level gained and temperature.
• Deep sleep: roughly how much of the time since the last restart the phone spent in deep sleep.
• Live readings: level, charging status, temperature, voltage, current (where reported), Android's health status, and charge cycles on Android 14+ phones that report them.
• Drain and charging checks: how fast the battery drops with the screen on, and how fast your charger and cable fill it.
• Battery condition: health status, cycle count and manufacturer guidance, kept separate.
• Guided actions: jump to the right setting, including Android's battery usage screen.
• Samsung battery history: optional local log import on supported Samsung phones.
• Safety guidance if a battery shows physical damage.
• Export every reading as a spreadsheet (CSV) and your check history (JSON), or delete your data, any time.

PRO — one-time purchase, no subscription
• No banner ads.
• 30-day battery history: 7-day and 30-day charts, a by-day summary and the full 30-day charging diary. Readings stay on this phone for up to 30 days either way, free or Pro.
• Compare chargers: name your chargers and see how fast each one fills the battery.
• Battery report: a PDF of your readings, charges and estimates.
• Fix-it plan: the changes most likely to help, ranked by what your checks found, then a before/after standby check to see whether idle drain really went down.
• One-tap saver: auto-brightness and a 30-second screen timeout, undone in one tap.
• Which apps were active while the battery drained, with a shortcut to restrict each one (activity time from Android, not a per-app battery figure).
• Alerts: charge limit at 80, 85 or 90%, heat while charging, low battery and unusual drain, with quiet hours.
• Automatic overnight check, weekly check-in and drain trend.
• Replace or keep: an honest verdict on whether to consider a qualified assessment.
• Used-phone report to share when you buy or sell a phone.
• Home-screen widget with time left and trend.
• Standby checks any time, 100 past results, and comparing two checks (needs a phone that reports its charge counter; the app tells you before you buy).

HONEST BY DESIGN
• No made-up "battery health %": Android doesn't give apps a validated capacity figure.
• Charger comparisons show how fast the battery fills, not a charger's wattage.
• No task killing, "cleaning" or "repair" tricks: every change is a real Android setting.
• Missing readings are shown as missing, never guessed. Estimates are never a promise.
• Your readings, history and reports stay on this phone, with two exceptions you choose: a file you save or share, and alerts on a paired watch if you turn that on. No crash reporting and no analytics of our own. Free users may see a small banner ad. No account needed.

Safety information, stopping a check, exporting your check history and readings, deleting data, retention control and restoring a purchase never require Pro.