With the bike off the battery voltage should be over 12 volts. With the bike running at a fast idle the battery voltage should be over 14 volts. If both of those are good, then take the battery out of the bike and, put it on a charger for a couple of hours, then take it to a auto parts store and have them check it with a battery load tester. If it fails you need a new battery.

If you take it to the dealer the above checks is pretty much all they can do to test your battery.

Tom

Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety. Benjamin Franklin, US author, diplomat, inventor, physicist, politician, & printer (1706 - 1790)