3 ms·

Surely large chunks of the battery life are used by the screen, disk, etc.?

• zdw 13y ago
  They are. SSD's and LED backlighting help. Android can expose "which subsystem is using power" information to the user and applications, which is worth looking at. On phones, it's mainly screen and WAN radio.
  • tluyben2 13y ago
    Almost only screen on mine :)
  • Sprint 13y ago
    And on Linux Intel's powertop utility can.
• keeperofdakeys 13y ago
  My sandybridge laptop jumps from 13-14W to 20W when you fully utilise the cpu. It's the difference between 4-5 hours battery to 1-2.