FXDX is killing batteries
Most of us know what you meant by fragged. We all know a maintenance charger or charger defraggs the battery unless it's worn out and I think the term is sulfated.
But we tend to have the grammar and spell checkers who still live with their mommie.
Last edited by Jackie Paper; Oct 4, 2021 at 07:43 AM.
Other than severe overcharging, I can't imagine how that could happen unless maybe someone put a bullet in it.
Other than severe overcharging, I can't imagine how that could happen unless maybe someone put a bullet in it.
I have tested the stator and reg per manual specifications. Here is a link to basic instructions for how I performed my tests, however, I used the real service manual for the info, not that it differs much. https://www.jpcycles.com/counterstee...harging-system
I also rode around with a multimeter monitoring my voltage off the tender plug after replacing the battery the first time, though nothing happened during that time, so I did not catch the intermittent, regulator voltage spike that I hoped I would catch.
I have since borrowed a reg from a brother, and the bike has not acted up since. Ive been through the wiring in the bars, in the frame, every ground and positive connection, all the fuse plugs (cleaned and inspected for snugness) and checked for shorts where I could. I even checked the ignition switch harness, which I had trouble with on another bike where the female spades in the plug had become loose and I had to de pin them and bend the spring tension back into the spades and reassemble and never had another issue again.
One thing I will say is that when I put the loaner regulator on, the plug from the regulator dc output to the bike did not want to lock, and I had to fiddle **** with it to get it to lock, so perhaps this may have been an issue?
Other than severe overcharging, I can't imagine how that could happen unless maybe someone put a bullet in it.
I have tested the stator and reg per manual specifications. Here is a link to basic instructions for how I performed my tests, however, I used the real service manual for the info, not that it differs much. https://www.jpcycles.com/counterstee...harging-system
My stator outputs 24V AC just at idle- I did not rev the motor to see how high the voltage would go at higher RPM-, and my battery reads 14.3 volts all day long wit the bike running at any RPM.
I also rode around with a multimeter monitoring my voltage off the tender plug after replacing the battery the first time, though nothing happened during that time, so I did not catch the intermittent, regulator voltage spike that I hoped I would catch.
I have since borrowed a reg from a brother, and the bike has not acted up since. Ive been through the wiring in the bars, in the frame, every ground and positive connection, all the fuse plugs (cleaned and inspected for snugness) and checked for shorts where I could. I even checked the ignition switch harness, which I had trouble with on another bike where the female spades in the plug had become loose and I had to de pin them and bend the spring tension back into the spades and reassemble and never had another issue again.
One thing I will say is that when I put the loaner regulator on, the plug from the regulator dc output to the bike did not want to lock, and I had to fiddle **** with it to get it to lock, so perhaps this may have been an issue?
Is the battery fine until this happens? Does the battery survive any of these episodes, or is it one and done? If so, then since you've had two battery failures, that would imply this has only happened two times. That weakens the statement "I have since borrowed a reg from a brother, and the bike has not acted up since."
Grammar aside, words have meaning, and the more factual information you can provide the easier it is for those who could help you to do so, and the more likely they are to take the time to respond.
Last edited by John CC; Oct 4, 2021 at 09:23 AM.
The Best of Harley-Davidson for Lifelong Riders
Are you sure the battery is getting charged?
If you are letting the battery sit dead for a few days, it will die.
If the different regulator fixes the problem, go for it..
Last edited by Max Headflow; Oct 4, 2021 at 09:56 AM.













