I am planning driving my 60D to ski. I have been on same trip several times, every time I get back home with about 20% battery left. But tomorrow there will be snow on the road, havn't have any experience on driving on snow conditions. do you think my 60D can get back home with this snow condition? The trip to the ski area is up hill, I usually get there with 40% battery left, and use anoth 20% to get home.