Suggested by Destroyer Battra can fire powerful energy blasts and was even able to give Godzilla a run for his money a while back. That ultimately begs the question, can Battra really hold his own against Luke in a prolonged fight? Well, he has good offense but ultimately I see him losing this because he has no defense against the Lightsaber. Luke can quickly go in there and slice him to bits while using the Force to dodge counter blows. Luke Skywalker wins.
Luke should have little difficulty with Battra. See my response to him fighting Kumonga for what that would look like.
Yeah, Battra’s tough but he’s really not ready to take down someone like Luke. Luke has too many offensive weapons at his disposal