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Message: <blockquote data-quote="swampratt" data-source="post: 4329539" data-attributes="member: 15054">Ok get the science of jump starting in your minds.95% of the automotive rookies hook up the cables to a weak  battery and then to another vehicle and start cranking right away.Yea it can work like that if the cables are quality and large wire.Many times you must allow the support battery stay hooked up for some time to allow some charge into the drained battery.Now this dewalt deal staying hooked up for a little bit will probably give the drained battery enough to get the car cranking.Yea car batteries are rated at 600+ cranking amps.I have checked Amp draw on an automotive starter of old school engines and old school starters thathave way more friction than these new engines.Never seen more than 225 cranking amps being drawn.For my Nova I used a small light  automotive battery a little 500 cca battery and it was a cheap walmart one.Never any issues for the 11.9 compression  245 PSI cranking pressure SBC.On another note many would say you can't use.Cheap thin speaker wire that came with your cheap pioneer car speakers in the 1990's as jumper cable.I did just that.I swear that stuff had to be 22 gauge but it is what we had and I connected it to my 1979 LTD 400 motorcycle battery which was 12V 12 amp hour battery.Left it hooked up for 15 minutes on my buddies Gremlin 6 cylinder  and it charged his battery enough to allow it to start. I pulled the wires off the batteries after the 15 minutesI tried to pull start that car with my motorcycle and that absolutely did not work out.Need more bike for a stunt like that.</blockquote>

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