Quote from Calclavia
BC is now integrated in all UE mods that requires it. You no longer need to download it anymore.
But it's not, The battery box isn't included in ANY current UE mod from what i can find, neither is the coal generator.
EDIT: So After uninstalling and reinstalling several times trying to figure things out, i can now spawn a coal generator and bat box in singleplayer mode, however, i can't interact with either of them, and when on a server with the same mods installed (by me), NEI gives me the error, No Such item.