I had to replace mine also (2008 DA Chopper) kit bike. Battery was fine; but kept vibrating the wires loose with those captured nuts.... I put red locktite on them... Held them tite but then spun the captured nut and twisted the post on the ground when installing battery tender for winter.
My replacement is a harley battery... Same exact dimensions and CCA but now has drilled / tapped front mount posts instead of those top mounted captured nuts... Works much better....