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Old 04-29-2014, 12:53 PM   #8 (permalink)
Miller88
Master EcoModder
 
Join Date: Jul 2008
Location: NY state
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XJ Cherokee - '00 Jeep Cherokee Sport
90 day: 12.96 mpg (US)

FoFO - '11 Ford Focus SE
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I don't think these (like most) jump packs are meant to start a completely dead car. If you left the headlights on in a well maintained long enough that it just clicks the relay and not long enough to completely drain the battery - this will probably work. It would give just enough to get the vehicle to turn over.

Most vehicles don't need to crank a bunch to get started.
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