Battery Level Logger & Drain Speed Test | Phone Battery Health Tracker

Smartphone Battery Drain Logger & Life Diagnostic Tool

Concerned that your smartphone battery is draining too fast? This tool tracks battery percentage changes over time to calculate accurate drain rates (%/hour) and diagnostic metrics directly in your web browser.

Key Features

• Real-Time Battery Status: Tracks current percentage, charging status, and discharge rate.


• Drain Rate Analysis: Calculates hourly energy consumption under different usage conditions.


• Local In-Browser Logging: All data is stored locally in your browser storage.