Empty your battery
This wonderfully useless application will help you get rid of the precious energy stored into your battery.
It might also warm your hands a little.
It leverages (multi-core) CPU, GPU, camera flash LED, screen brightness, sensors (MEMS and more) and GPS to maximize current consumption.
Completely free and ad-less. Feel free to leave messages (feature requests, bug reports, etc.) by email or other means. You can also check issues' statuses and other project-related information on github.
Keywords: charge, discharge, battery, experiment, open-source, light, power, fast discharge, power, calibration, calibrate, heat