Trickle charger! $20 at walmart.
+1You can get battery tender and not worry about it. My sits for that long sometimes. If you just start it and not let her get to operating temps, you will cause more harm then good. If you store it, store it. And if you are really worried, just remove the battery altogether.
I would make sure the tank is drained or put some additave in Ethanol is playing hell with powersports equipment right now. I stopped by the stealership the other day and they were loaded up with bikes that had sat.
Very nice!Battery Tender - Battery Tender Junior Charger
Just got this today. Bat tender for 18 bucks. Well worth it
Some of our mid-western friends may take issue with the proposition that ethanol causes trouble. As for me, I search for 100% gasoline. It can still be found hereabouts.
CW