2010 Bonneville T100 Se Battery Flat

Not sure what a T100 Se is! Either a spokey or mag wheels but for present purposes irrelevant anyway.

The simplest thing is to switch batteries as you have other bikes and get it running. Use your multimeter to check voltage at the battery, engine running. With a blipped throttle you should see 13.5/13.9V which tells you the charging circuit is working. Expect no more than mid to high 12+ V at tickover. This will then point the finger at the battery itself or some discharge source like an alarm, if fitted.

If you charge the suspect battery and take it to any local garage they shoukd have a load tester and be able to tell you if the battery is shot.

If the battery and charging system both check out you have a discharge to track down.

(I assume you have checked main fuses etc.). If you use crocodile leads from a car probably best with car NOT running unlike car to car.

 

Nothing to cause a drain of which I am aware unless fitted as aftermarket accessories......

Was the ‘new’ battery properly commissioned? I ask because the ‘new’ battery I fitted to my car was seriously discharged and must have been in store some time since manufacture. Your charger should have fixed that though. My T100 carb model sees minimal charge loss month on month even over winter although it sits on a Ring charger over frosty months.

A load test of the battery would be my first step. They can be fickle in their lifespan.

 

Hi out there, first time poster, long time trumpy rider....anyway, thought I would throw out there an issue i had this morning with my 2010 SE Bonne. Went to fire her up this morning for work, and she roared into life..then quickly cut out, clicking over ok, lights working ok, but its almost like the actual spark plug isn't turning her over...took her out in the weekend for a long ride, no issues (apart from getting caught in a bit of rain)......any suggestions what might be the issue?