If your bike is going to sit for that long I would disconnect the battery and take it indoors , I run the same battery and while great if you use the bike often I have found if it sits for long time it will go deader than hell .
I believe the company recommends storing them in the fridge ?
75 Norton Commando Roadster
07 Sherco 510 called Holy Shit .450 Sherco called Bling .
13 Sherco 300i called The Bee's Knees .