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 the player's inventory, unlike the RE-Battery.

The AFB is used to create the AFSU.