Interesting you did not know.
When we had our walk through with LaMesa RV (Phoenix) this was explained and the tech pulled a couple of panels and showed us the battery (i.e. slide control at drivers seat and control by the kitchen). We took possession in September 2020 of our 2021 340. The walk thru was very informative. We traded a Class A gasser for the new diesel, so he concentrated on the differences, E.G., spider controls, DEF, AquaGo, starting the diesel, and diesel generator, etc. We had bought the gasser from them in 2014. We also specifically requested a Powerglide Chassis when we ordered the 340 in July 2020, which we received. I have read posts on this board that say 340's are ONLY available with Freightliner chassis. As long as Tiffin had them available, PowerGlides are/were available.
2021 Tiffin Allegro Red 340 33AL- (PowerGlide)
2014 Coachmen Mirada
ACME Tow Dolly - 2016 Buick LaCrosse