I just recently bought a 1995 Seadoo Bombardier XP that has been sitting for a while. The only thing they knew for sure was wrong with it was the battery. I bought myself a battery and charged it for 10 hrs at 2 Amps like the manual said but it still won't start. The battery reads 12.8 volts and I can jump it and it will start every time. I can also put the charger on 15 Amps and it will start every time. To me it seems like my battery is fine and I just have a bad connection or a short somewhere but I'm not sure where to start. Any help would be greatly appreciated.