Every so often my 04 f4i wont start. I pull the battery out and charge it for 30 min and it starts right up. Is this a battery problem or a charging problem within the bike? Happens about every other day.

 

how long does it sit before not starting, if you just let the bike sit for 2wks + you may run the bat dead? if your riding it no probs, then park overnight and its not starting, battery is prob not holding charge, how old is the battery? you can always get a load test done on the battery
hope this helps

 

Battery, definitely the battery! Motorcycle batteries suck beyond belief. If you get more than a couple seasons out of one you're doing well