Mac Observer:

Apple took away the time remaining estimate from its Battery menu bar widget in macOS 10.12.2 presumably because it was inaccurate and confusing. That’s a problem because a lot of MacBook Pro, MacBook Air, and MacBook users rely on the time estimate to get an idea of how long they can go before they have to find a power outlet. Even though Apple deemed the time remaining estimate unnecessary, other developers get that it’s an important feature. Read on to see three of TMO’s favorite battery monitoring apps.

Apple taking the estimate away, even if wildly inaccurate, is silly. Not fixing it, even more so. These apps aren’t necessarily any more accurate (testing will be required) but at least you’ll have some indication as to how much battery life you (might) have left.