When I try to use this mod it says input zero watts and it doesn't seem to do anything

That input 0 watts in the tooltip is normal
Sorry but I can not make it more apparent that it's functioning properly without heavily degrading functionality.
Just check if your batteries/equipment are filling up and make sure you're next to a power pole with electricity

the coils are not batteries anymore now so their properties should not be confusing anymore
but i added a flying text that shows you the total charging power and a hud element where the graph turns green if its charging

i'd love to hear any feedback, even if its just a bug report...