I use a dewalt 1/2" 18v. It makes changing blades and tires so much easier. And no air compressor and hoses running everywhere.
I bought one of these at the start of the season. On/Off...the thing runs for probably a couple seconds???? I only change blades in my shop. But, I charged the battery before the 1st time I used it.......and I haven't charged it, since. It's still working - fine. If it loses charge, it'll cost me 10min's???
This is a tool to make my life easier (like any other). I like it.