GolfingDuo
Recycles dryer sheets
Sams club - golf cart batteries @ $80 if you can change them yourself. Also for $$$ minded... a lightweight charger for $100, versus the $500+ cost for the regular size. Our last batteries were good for 12 years (including 6mo/yr in the Florida heat). YMMV
+1 on checking with Sam's for golf cart batteries - Interstate brand I think. Lots of folks in the RV world use them as well.
His golf cart maybe battery powered only. Not the normal small gas powered engine. I know that some forklifts have enormous batteries and they can cost into the 4 figures.