Ditto to what Chalo said...except that you might need closer to 85VDC to equal 120VAC for total actual energy available. (IIRC in my nearly braindead tired state right now, 0.707 would be about the factor to convert one to the other?)
I know my circular saw and all of my AC-powered drills work fine on DC, as do my plug-in weedeaters, my sewing machine, and my original B&D lawnmower did, but I ahvent' tested that with my slightly newer one.
It would *not* work on my lathe, swamp cooler, box fans, cieling fans, washing machine, another pair of lawnmowers (whcih barely work anyway), or a number of other things.