I would not go out and buy a charger with the thought it may turn it around...maybe it will, depends on the kind of life it had I suppose.
I would try a general charger (if you already have one) for a short time to see if it would take a charge at all if it does, maybe a conditioning charger would work and recover it. To that end I don't know with a certainty that I would bet on.
From what I have read when they dead short because of sufasifcation (spelling?) the precipitate is a break down of the plates or some component of the processes and it settles to the bottom and shorts across the plates. Once that happens...I don't know that it can be un-done at that level.
The fancier charges that cycles prevent this from happening. Though some of the companies say they reverse it...I too would be suspicious of at what level it is a lost cause.
If your bike will take a charge after 20 minutes on the charge and hold it for a day, you may have a chance at saving the battery and a charger may buy you some more time.
eddy
