Hello, i have a 2002 RX DI and a 2002 GTX DI. They have been stored in my garage over the winter. Their batteries went flat so i tried charging them with a trickle charger. They show about 10 volts and wont charge any higher. When i attach the key i can hear a faint click but nothing happens ??????? Also, the seadoo keeps beeping until i take the key out. any ideas on what the problem is would be greatly appreciated.