| It sounds like you may have the usual dreaded ST regulator/rectifier problem. You certainly need to check it. Without looking it up, I can't remember the exact figures, but it's ringing a bell that your reg/rect. should be throwing out about 14.5 volts when charging. Also check the state of the cables and connectors for anything that's fried (or rubbed through and shorting).
The ST's gave loads of problems with these. Basically because the originals were pants. So much so that there were warranty replacements available.
Mine was changed with no charge (pardon the pun) when the bike was 6 years old. So ring Ducati UK and see if yours has any outstanding warranty work or recalls. They will still honour them.
If you haven't got a multi-meter, any half decent mechanic will be able to tell you in 2 minutes if your battery is not receiving enough charge. The regulator is under and to the rear of the right hand side of the headlamp housing.
Defininetly check it before bunging money at another battery.  |