solar panels useable?

[phishphood]

Guy giving away 2 panels that he was using to heat his hot tub. Can I use them for anything? (even trickle charging a marine battery or something)

http://sfbay.craigslist.org/sby/zip/1052415901.html

 

[tuberider]

Forget the panels, get that sweet hot tub, chicks love hot tubs!