Following widespread complaints that the remaining battery life estimate was wildly inaccurate on the new MacBook Pro models, Apple acted swiftly to resolve the issue. Unfortunately, that action was not to fix the estimate, but rather to remove it altogether. As John Gruber put it, ‘this is like being late for work and fixing it by breaking your watch.’
I do appreciate the challenge Apple faces with providing accurate battery-life estimates with the new machines. I’ve heard from multiple sources that the Skylake CPUs used in the new machines are extremely responsive in the way they ramp Turbo Boost up and down to provide the optimum balance of power and energy-efficiency for each given task.
That means that the amount of battery power being consumed can vary dramatically within the course of just a few seconds. Given that macOS seemingly estimates battery life on a second-by-second basis, the combination of the two things is clearly going to result in the kind of wild fluctua
