So yeah, title explains itself.
-Batman can use the ring to full power, has full charge/enough power for a year straight.
-Darkseid has his powers
-Neither holds back
-Batman has 12 hours of prep
-Fight is in Smallville(Superman is out of town lol)
-Batman can imagine anything he wants, Earth or Apocalyptic weapons mean nothing here and aren't limited if Batman knows about it, so 12 hours of prep to learn as much as he can about Darkseid, if he can do it, then he can imagine their weapons as much as anything on Earth.
-Fight is until bad K.O., in Batman's case he has to K.O. Darksied badly until he's nearly dead then sends him back to Apocalypse, in Darkseid's cases he hits Batman with his Omega Beams
-Batman is allowed to dodge the beams to a point, his powers here and his intellect are allowed
-Yellow Lantern Batman vs. Darkseid
-one day prep with the ring before the battle
-Battle is won by death or near death K.O.
Who wins and why?