The AFSU Mod is intended to extend IndustrialCraft 2's energy storage by a tier, into tier 5. It adds one block and one item:
- The AFSU. This is an upgrade of IndustrialCraft 2's MFSU, and can store 1 billion EU.
- The AFB. This is an upgrade of IndustrialCraft 2's Lapotron Crystal, and can store 100 million EU.
More information (including credits) can be found on its forum post or wiki page. The texture of the AFSU (and potentially the AFB) can be changed if desired in the configuration file to any of the listed textures.