damn son thats in issue. i would have my momma crank that $hit up!! lol

 

This is what I do to all my bikes, and all of my lawn equipment, when I put them in winter storage and have never had a problem, when it's time to get them running again in the Spring.
I also pull my batteries out and take them into the basement, and recharge them about once a month during Winter.
Some people use Battery Tenders, but this is what I do.