Hello all, and appreciate all the good info on this forum! Well I just baught my 1996 sl780 took it out yesterday rode for almost an hour then it stalled out and wouldnt start, the seller said he put a brand new battery in but it didnt have enough power to crank the engion, we had to be towed back to the marina. When I got home I took the battery out and charged it, it did start, and voltage reads 14v... I am wondering is this a common problem, or is there something wrong that is draining, or not charging the battery?

Appreciate any advise!