If any Modern touring bike sits for more than two weeks it will need a jump - no matter how old the battery is. The ecm & the clock & the alarm battery will suck the power out of it.
Actually, the alarm will go into "storage" mode after 21 days. I learned this first hand, recently, after not riding my bike for a month. I wasn't able to dis-arm the security system with the fob. Had to do it manually, using the turn signals. In getting into the owners manual to disarm it is when I learned about the "storage" mode activating automatically, to keep from running the battery down.
I don't remember exactly how long it was since I'd rode it but I think it was four or five weeks. Once I got it disarmed, the bike fired right up......the way it always does.