This. You can't just idle your car to charge the battery, you need to drive it around and get the RPMs up a little bit. It's better for the rest of your car too in this cold weather to be warmed up all at once by driving it gently rather than just warming up the engine.This quote is hidden because you are ignoring this member. Show Quote
I don't know why the OP hasn't just gone to Canadian Tire or whatever and sorted this all out already.
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Some German cars use AGM batteries and this is one of the reason why.This quote is hidden because you are ignoring this member. Show Quote