Request: An item that charges other items while in your inventory

[TheDeviantCrafter]

I'd like to see something similar to Thermal Expansion's capacitors in a standalone mod. I'm making a tech pack without that mod, and I'd like an alternative.

In particular, here is how I would like such an item to function:

-While in your inventory and active, it will charge other items or armor pieces in your inventory

-It stores a configurable amount of RF, which can be charged with chargers such as the other blocks from this mod

-Hold it in your hand to toggle if it's active. While inactive, it does not charge items.

-It works while in the inventory, hotbar, or any bauble slot