Great! Except for...

Two very important features that I think this app should have are:
- a pop-up that appears when battery is low. I have notification center turned off on my MBP, so a pop-up that isn’t tied to it would be perfect.
- the ability to also show battery percentage left (like the stock OSX and Battery Guard apps have)

Both of these features could be toggle-able in preferences.

KubaSub about Battery Health - Monitor Stats, v4.4