Blew up another one....

[john jupiter]

Sure , i'll post a few photos in a few days.

[jbcollier]

Anything over 7.6 volts is too much!

The reason the different battery lowered the voltage output is because it wasn't fully charged. When it is fully charged, it will boil as well.

Change your regulator.

[DewCatTea-Bob]

" The reason the different battery lowered the voltage output is because it wasn't fully charged. "

____ Since there's more than one possible reason for his measured results, one should not jump to such a particular conclusion as if it's THE one possible answer.
I-myself did not exactly do so (with my-own offered-reasoning), as his (static) voltage-reading (of "6.75v") had indicated that the battery was already charged-up.


" Change your regulator. "

____ Did you not read-through the whole/entire thread ? - Cuz he has mentioned having already done that.


Dukaddy-DUKEs,
-Bob

[john jupiter]

Here is a photo of the new Shorai
its very small and it doesnt look like i will be able to use the stock strap but a rubber one i have does the job.
so far so good. got it from rocketmoto and customer service is pretty awesome.

[john jupiter]

its been 30miles and the new battery hasnt given out yet BUT... my low beam did give out.. 40W.. highbeam still working... hmmmm

[ducwiz]

Hi,

my experience during ~20000 mls with my own 350MkIID, and other bikes from friends:

- the Ducati regulator 34.41.06 switches off at 7 - 7.2 Volts, I checked this on more than 80 items. Voltages above this level lead to acid spilling ...
- make a bench check of your regulator for proper operation and precise cutoff voltage. Different how-to instructions are available on the web. I have uploaded two from Ducati: http://minus.com/mYjSS1vWQ
- always use an anti-vibration pad between battery and frame
- always provide an excellent electrical connection between frame, battery minus terminal and regulator case, by copper braid strips or short cable
- always provide an excellent electrical connection from the headlamp shell to the frame, by an auxiliary cable
- take care of good electrical contacts in the wiring from battery to fuses, ignition switch and back to regulator "marrone" terminal. Any corrosion on fuses or switch contacts will degrade the charging performance, as the regulator "measures" the battery voltage at the "marrone" terminal. Due to contact resistances and depending on load current a voltage loss can occur, leading to an excessive battery chargeing, because voltage is considered "too low". To ensure proper operation, measure the voltage between battery positive terminal an "marrone" connector at different RPMs and loads, with/without headlights and/or brakelight switched on.
- the situation relaxes on a 12 Volt system !



cheers Hans

[john jupiter]

Thanks Hans, good info! I padded the battery tray and got a lithium battery and so far so good! Really starting to enjoy riding this bike.