When combined with the differing ways people use their Mac throughout the day, the calculation of remaining battery life displayed as a measure of time has become less accurate. But instead of the toolbar, users will have to find it in Activity Monitor.With the latest update to Sierra, we have removed the remaining time indicator. When the Mag Safe power adapter is first connected to the computer, the Mag Safe's LED glows. A green light indicates the battery is fully charged, or not installed correctly in the computer.Sometimes the circuitry inside the computer gets static charges collected causing hindrance in signal transmissions.
Apple reps told him at the time that the ability of modern processors to ramp power up and down in response to different tasks made it harder to generate specific, steady estimates.As a result, these laptops were the first Mac Books not to receive Recommended ratings from Consumer Reports, and the only ones in our ratings of 140 laptops to demonstrate this degree of inconsistency in battery life.We have now downloaded the software fix and are rerunning our battery tests with the fix in place on the same computers previously tested.Apple has removed the "time remaining" battery life indicator with the new mac OS Sierra update following complaints from several users of new Mac Book Pro models.Apple says it stands by its 10-hour battery life claim in the new Mac Book Pro models, and adds that the battery life indicator didn't show accurate information.