It's something I've been wondering about for a while. I've never managed to get the magical 10 hour life. It's usually between 5~8 hours. I use this for development for Chrome, Brackets, Slack and Sourcetree are always on. Vagrant is up sometimes. At least one copy of gulp and sbt/activator are up at all times too. Bluetooth is always off. Wifi is always on. Brightness is at 4 bars in standard lighting. According to activity monitor, chrome seems to soak up the most battery life. It hangs around 25% avg energy consumption whereas everything else is usually below 10. Is this 'normal'?