I just bought a DEKA battery It's called the intimatator, or escalator, or escaperator or some such bull****. Bought it Just for kicks, same technology as the Optima the "dry" cell deal, except the DEKA is in a case exactly like a standard battery, rectangle same size as a stock battery. the Optima is $150 + here in Central Oregon at Costco, higher everywhere else (here in central Oregon..like $190 at "JOE'S"). The DEKA was $100...same CCA as one of the red top Optima models, 850cca, but it tested out to 950CCA.
The DEKA "marine" is the same battery as the Deka "starting" battery...same specs, they are both capable of deep discharge and re-charge aka, "deep cycle", except the Marine has the regular terminals and also wing nut terminals..hooked the winch to the wing nuts, will also hook up the other extra electronics that need direct battery connection to the wing nuts..
I have only had it for two weeks, I read good reviews on it but don't know anyone who has one...like I say I just bought it to see how it would do..so if it is a bad deal I'll post as soon as it fails in any way..
The Battery that was in it was a Wal-Mart battery 525 cca. It was five years old still worked fine I just replaced it cause I figured it was "time" figured if I did use the winch in this hot weather...it'd go bottoms up..