DD-Lab

DD-Lab Battery Stress Timer

Browser-based battery stress timer with animated display load, local JavaScript workload and MySQL heartbeat logging.

Detecting browser and device…

Balanced CPU + display stress

Light Low CPU bursts, mostly display/timer test
Medium Balanced CPU + display stress
High Heavier CPU workload
Recommended test conditions
Chrome or Firefox Same URL Fullscreen Same brightness Unplugged Close other apps

This test intentionally stresses the browser and may drain your battery.