Oh, okay. How do I add discharged and charged states of my item to the NEI then? Currently it is there without any metadata\damage value.
You can just override the getSubItems class and add the empty verdion of the item to the list and then you add another Item that you prepare in before with ElectricItemManager.charge() or something.
For some reason when I try to use IC2 recipe manager game just crashes during loading throwing java.lang.NullPointerException
You, as an addon creator, should know that ,in order to help you, we need a full crash log.