It sounds like you do not need a lot of power. If a lawn tractor battery has enuff oomph to run the winch, that is your cheapest at $30 a pop. Just keep it charged and replace it every couple years.
[img]http://i.imgur.com/boeexFms.jpg[/img] 31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"