Volt Monitor

Volt Monitor is a simple, clear app for tracking your phone's battery status in real time.

Unlike other apps, Volt Monitor never invents or estimates values it can't actually measure. It shows only real data straight from Android's system APIs.

WHAT VOLT MONITOR SHOWS

Current battery percentage
Real-time battery voltage and current
Battery temperature
Charging status and charger type (USB / AC / wireless)
Battery health as reported by Android
Measured maximum battery capacity
Declared battery capacity (by device model)

HISTORY & BACKGROUND LOGGING Optionally turn on background logging to see how your battery behaves over time - a battery level chart for the last 24 hours, 7 days, or 30 days (180 days with Pro). Logging runs as a foreground service with a persistent notification, as required by Android.

CHARGING SESSION DETECTION The app automatically detects when you plug in your phone and records the duration and progress of each charging session.

ALERTS FOR RISKY CONDITIONS Volt Monitor warns you about unusually high battery temperature, overvoltage, or critically low charge.

MULTI-LANGUAGE SUPPORT The app is available in 11 languages, including English, Czech, German, Spanish, French, Portuguese, Russian, Japanese, Indonesian, Hindi, and Arabic.

PRIVACY All battery data is processed and stored locally on your device only. The app doesn't request access to your location, contacts, photos, or other sensitive data.

VOLT MONITOR PRO A one-time Volt Monitor Pro purchase unlocks:

Up to 180 days of history instead of 30
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Volt Monitor - accurate battery data, no guesswork.