The Ultimate Lappack already exists, stores 10 million EU. It's located here.
As to the "Discharger", take a look at Tallinu's and my Advanced Power Management mod here. I think the Battery Station is exactly what you are looking for.
Thanks ! By Charger I mean a tool, right click to use on hot bar, like Cropnalyser, use Batteries, RE-Batteries, Energy Crystal and Lapotron Crystal to recharge other stuffs.(Except Cropnalyser use EU to analyse Unknown Seeds) Sorry but Discharger should be Charger, and I would like to have a Discharger too. By the way I this thread is to have a Charger, not discharger. Adding discharger would be goo. Sorry if there is addon of this mod already.
