Sounds like the battery to me. The same thing happened when my bike was new. Guys at dealership did all this voltage testing with the bike off and running but every morning it was dead and had to be jumped. The finish was rode to the dealer to tell them about it again and they went to pull the bike into the shop and it wouldn't start. New battery...since then everything as been fine.
Old enough to know better...young enough not to care.
Old enough to know better...young enough not to care.