Why wouldn't it be?Is it safe to start a car in negative fifteen degree temps? lol thatās wicked, I donāt envy those temps.
My dude, get a battery tender. I'm also North of the Wall and am used to seeing -25 to -35c here in Ontario at times. I've started my car 4 times since the middle of November, once every 3-4 weeks, but the battery is fine as I've got her on a tender.Have too or else battery gonna die![]()