Battery Lab: Battery Info

Battery Lab — Battery Info gives you precise, real-time battery metrics for smartphones and tablets. Measure remaining and actual capacity (Wh), monitor charge/discharge current, view voltage, temperature and charge cycles, and track charging current limits. Get configurable notifications for low battery, target charge levels, full charge, overheating, or extreme cold, and display live stats in an on-screen overlay. The app logs charging history and is optimized for minimal background power use.

Permissions are transparently explained and limited to what’s needed: storage for settings backup, draw-over for overlay display, launch-at-startup for auto-resume after boot, and run-in-foreground to support persistent battery notifications, logging and sound alerts. Read the in-app instructions and FAQ before asking questions — most answers are already covered. Ideal for checking new batteries, diagnosing battery health, and optimizing power management.