AFB

The AFB is a rechargeable energy storage unit similar to an Energy Crystal or Lithium Battery. It can hold 100,000,000 EU. It requires an EV-tier interface to charge and can only be used to power T5 machines or T4 machines with one Transformer Upgrade, or a T3 machine with two Transformer Upgrades, etc. Right clicking an AFB will NOT cause it to recharge electrical powered items in your inventory.

Uses
The AFB is used as a power storage unit much like an RE-Battery.

It is also used as a crafting ingredient for a the AFSU.