I've had enough battery powered tools with a dead battery when I go to use them that I wouldn't get one for this purpose. If I'm doing a small project, throwing the battery on the charger for a 1/2hr while I do some other prep work isn't a big deal. If I'm stuck on the side of the road, cranking the generator up and running it for 1/2hr to charge the battery, doesn't seem a great idea.
I have a long breaker bar. Once they are broken free, nothing to spin the lug nuts off quickly. If I'm greasing the bearings, I get out the small air compressor and pneumatic unit.
