Energy Crystal (IndustrialCraft 2)

The Energy Crystal Is a rechargeable, energy storage unit similar to an RE Battery or Lithium Battery, It can hold 100,000 EU. It requires an MFE or higher, Right clicking an energy crystal will NOT cause it to recharge electrical powered items in your inventory

Recipe
The energy crystal is made from one diamond and eight redstone

Uses
The Energy crystal is used as a power storage unit much like an RE Battery

Or in the crafting of Nano Armor Lapotron Crystals And other electric based tools