Left lights on over night and battery was dead. Charged battery and got bike to start. Everything appeared to be fine, but approx 20 miles later the bike shut down. Had to wait a minute or so and though hesitant it started up.

It then shut down on me every time I came to a complete stop. Sometimes I had to keep the the bike revved up to prevent shutting down. Sometimes it worked and others it didn't.

My sled has 10500 miles on it. What could be the problem?

 

You might get more answers posting in a tech section, like the touring section.

But, there are lmultiple things that could be causing your issue. Yes, low voltage to the ecm is possible, but so are a few other things.

Being a 14, it should be under warranty. If it were me, I'd take it to a dealer and have them figure it out.