I also was gonna suggest the dreaded crank position sensor, but since you said there were no codes AND the battery was in it's 13th year (HOLY COW!!!) then yes, I would certainly load test the battery. Even a regular car mechanic should have a computer controlled battery tester that will do it. I've never had a battery go 13 years on anything... I guess Yausa is worth getting again!2008 with 31,000 miles. Drove early in the day for 45", got gas, went home and parked.
2 hours later rode it 1.5 miles, then let it sit for 2 hours. Temps today were about 50 F. Went to start it and no start...no almost catching, stumbling, etc. Starter turned fast but that was all it did. Tried this about 4 times, with turning bike off, on again, neutral, clutch in and out, etc. No flashing codes. By this point I was thinking i just might be stranded.
Finally, I turned the throttle WOT and it started almost immediately, just like it normally does. Left me with the impression the first 4-5 tries were no starts b/c there was no fuel being injected. I'm tempted to just forget about it like it was the one off event, but maybe there is worse to come? Comments? Suggestions?