The idea of this mod is beating the game with no reactor power at all, only Zoltans.
It removes all reactor power and the backup battery -- only from ships that start with a Zoltan, as otherwise...well, you can't even jump.
It also removes all free reactor upgrades from the game. You can still get the event outcome, you just don't get the upgrade.The version for Zoltan C also removes Backup Battery from stores. The other version keeps the Battery in stores.