well we still dont have enough snow to ride, but it is getting cold enough to do some testing on the battery. It got to -6F last night and sitting in the open with 25 MPH winds blowing on the sled, it is still dark outside and -1F and i just got done with the first test. the earthx turned it over on the first try, it was slow, but the engine still tried to "catch". i tried 2 more tries and no go. i waited a few minutes and it started on the second try.
it had no problem at these temps, but tomorrow morning will be a better test. -18F projected for tomorrow night, I will turn the engine over once and stop and turn on the battery warmer for about 10 minutes and see if that will make a difference or not.