I've been having a lot of ignition problems with my car lately and blew them off because I live in minus thirty c weather almost all year round, every morning my car won't start even with a block heater in it. Now more recently it won't even start when I have my charger on it. It will roll over four or five times before stopping, even after a couple hours on my charger it still cranks slowly. Is this because of my weather or is it something wrong with my car?