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F4i Battery dies after long ride

Old 11-15-2011, 10:17 AM
justing66's Avatar
Thread Starter
Join Date: Jun 2011
Location: San Diego
Posts: 38
Default F4i Battery dies after long ride

Hey All,

Never had this problem until last week.
I commute once a week from Long beach to San Diego for work. So I make the drive down, make a quick stop (5min), go back to my bike and the battery is dead. So I have someone jump it for me, ride a short distance and turn off the bike .Turn it back on and it starts fine. Another short ride, again..off, on starts just fine. I make the drive back to Long beach, pull into my driveway, turn off the motor to go open the garage door, come back to start it and its dead again.

I was hoping maybe it just needed a good charge, but I haven't made a long trip since to see if it does it again.

Anyone else had a problem like this? Or possibly know a diagnosis?

Old 11-15-2011, 10:27 AM
jeffjones's Avatar
Welcome Crew and May 2012 Ride of the Month
Join Date: Aug 2010
Location: Kitchener, Ontario
Posts: 1,564

Run the charging system tests in the service manual and that might give you a better idea on what the problem is exactly.
I had something along those lines and it was my R/R.
Old 11-15-2011, 10:37 AM
74demon's Avatar
Administrator and MVN, March 2012/Oct 2013 ROTM
Join Date: Sep 2011
Location: socal 949/951
Posts: 7,979

as stated, check your battery and charging system. charge the battery an have it load tested. put a voltmeter across the battery and see if it is charging (13.5v to 14.5v) at 4000 to 5000 rpms. regulator/rectifiers and burned connectors are very common as well as bad batteries. if it is not charging, be sure to check your stator for a open circuit or short to ground.
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