Battery widget doesn't handle well two batteries

[maipley]

Hi, I'm using a thinkpad with dual battery, and it seems that the widget doesn't handle correctly the two batteries.
The two main "problems" are that it shows that is charging only if the battery being charged is the one with most battery, and that it may show the battery in red even when the other battery has 70+ battery.
I'm not familiar with lua so I couldn't find how to change this behavior.
It would be awesome if the battery icon was selected based on the average of both batteries instead of randomly selecting one, and it should check if any of the batteries are charging, instead of focusing on one.
Thanks in advance!