Make sure there is a place that will refill near you.
Not all weld shops, air/gas shops, fire extinguisher shops or paintball shops will refill “off-roading tanks”
It’s totally messed up.
A buddy had a power tank, (they are a few hours from us and some of the absolute nicest people in the offroad industry)
I was about to get one as I had horrible issues with oba… (I’m lazy, they take maintenance if you offroad a lot, lines leak).
So just as I was about to buy a power tank set up, he had to refil his because he had 37’s and blew through it.
He could not find a place in the east Bay Area to refill.
He has to drive quite a way to find a place.
So…. If you can find a place first that will refill, power tanks are awesome other than they run out. (Like my mig welder tank right now dang it.)