Practical Sportsbikes (UK)
My 2000 Ducati 748E flattens its battery after just a couple of days standing. I guess there must be some kind of parasitic draw. It can’t be the alarm as I had that taken out because it definitely was flattening the battery. How on earth do I go about finding out what is draining the battery?
Stu Mac, email
Ferret says: The best procedure is to first check in the manual for the acceptable drain figure, most likely to be in the single digits of milliamps.
Next, connect a multimeter on the ma range in line with the battery earth. Note the reading. Now disconnect the reg/rec. If the reading hasn’t dropped then it isn’t the reg/rec causing the problem. Start pulling fuses to isolate which of the subsystems contains the issue.
Thereafter it’s about disconnecting the individual components in that subsystem until the culprit is found. The issue will lie with that component or the wires to it.