It does depend on the car and the charge required to start it. My diesel requires a lot of current - the couple of times I've had Green Flag out to start me their industrial strength portable starters weren't up to the job and they ended up attaching both them _and_ regular jump leads from their van engines to get mine started.
When I had to start mine from bibliogirl's car, I needed to run hers for about 25 mins charging mine before it would jump.
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Date: 2010-04-27 09:05 am (UTC)When I had to start mine from bibliogirl's car, I needed to run hers for about 25 mins charging mine before it would jump.