WhatBattery guides

Install it, connect your devices, and understand every permission.

Practical instructions for the small amount of setup WhatBattery needs, plus clear explanations of what the app can and cannot read.

Direct download, Homebrew, first launch, updates, and system requirements.

Complete the one-time trust step, enable Wi-Fi sync, and troubleshoot discovery.

Bluetooth, device diagnostics, updates, licences, and the optional wear comparison.

Readable summaries, JSON output, watch mode, reports, and export.

Health maths, conditions, charger verdicts, accessories, compatibility, and licences.

Ready to see the numbers?

Download the signed and notarised app for Apple Silicon Macs.