True battery health
Unrounded health, raw capacity, cycle count, service condition, and the facts macOS leaves out.
Explore battery health →WhatBattery features
Turn battery data into useful answers.
See what is true now, understand what is using the power, and keep enough history to know what is changing.
Live power and apps
Watts in and out, temperature, voltage, charger details, and your own processes ranked by power.
Explore power analysis →History and runway Pro
Follow health over months and forecast when the battery may reach Apple's 80% service threshold.
Explore the long view →iPhone and iPad Pro
Read the battery directly from your Mac over USB or Wi-Fi, with no device-side app.
Explore connected devices →Bluetooth accessories
See keyboard, mouse, trackpad, and AirPods levels. Add history, runtime estimates, and alerts with Pro.
See accessory support →Reports and export Pro
Create a one-page battery report or export the underlying history as CSV or JSON.
See reports and export →Built to be checked
Read-only, unprivileged, and open source.
WhatBattery does not install a daemon, kernel extension, or charging controller. It reads Apple's battery and power interfaces and degrades cleanly when a value is unavailable.
- No root access
- No automatic battery-data uploads
- No invented values when hardware reports nothing
- Source available on GitHub
Start with the battery numbers macOS hides.
The essential Mac view is free. Pro adds history, forecasting, deeper diagnosis, and connected devices.