I ride every day, haven't had any problems or symptoms at all. Today I rode 35 miles, parked the bike and left it for around 4 hours. When I came back it started normally, but I had a check engine and battery light that persisted. Figuring I'd just head home and troubleshoot it there, I started back. After about 20 miles the trouble lights went away. Made it home, checked the diagnostics, and got a PO 562: Batt Voltage Low EFI

This is a 2008FLHP Road King Police with 13800 miles. Battery going bad? Ideas?

 

If your RK still has the original batt in it, then it could be on the verge of failure. Another possibility is a malfunctioning charging system - not likely on a bike with just under 14K on the clock. A loose ground connection (very likely on a HD!) can also cause inconsistent voltage. You might get some answers by using a voltmeter to check your readings at different rpm to see what kind of volts you are getting. Hope you get it worked out.
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Do a simple check of the battery connections to make sure they are snug. Like O-Town already stated, use a meter to check things out.

 

check wiring going to your fuel injection.
Hatch.

 

Thanks for the suggestions.