I finally found the battery.
It is not the same type of battery I and accustom to using.
Laying on it's side was a dead give away.
MY SW came with a Yuas battery tender making it easy to charge.
But I have no need for it during riding season.
So my question is. Should I leave the tender connected all winter?
Or should I connect it once a month for a few days.
Maybe it should come in the house. (battery, but i've had thought on the SW as well)
I am not sure if it will freeze and maybe should not be charged when frozen.
The garage is attached to the house and does not get a cold as outside.
But in the dead of winter it will definitely drop below freezing.
My summer car and other bike stay in the garage and I do nothing. Then charge them in the spring.
But they are lead acid battery's