Its accuracy oscillates a lot and can give large discrepancies, even if the starting values are good. Somehow you put it recalculating in-between and that messes up the accuracy.

Good looks some problems.

I absolutely love the looks of it. Been timing it to see how it really is. It seems to behave a bit erratically in dynamic mode, and may reject previous values when saving, thus resetting the whole thing. The worst is that LOW BATTERY should pop TOPMOST and it doesn't. The way I'd like to use it would be, forgotten somewhere most of the time and popping a big red warning in the middle of the screen on LOW. You could also consider two levels of alert. Say the first at 15%, and the second at 10%, making the second impossible to miss (like with a frequent beep).

This widget is really great. By using the dynamic calculation mode, I can actually see how long I have left or how long it will take for the battery to charge. Very useful and unobtrusive.

One of the best battery metes programs I have tried over the years.