Quote:
Originally Posted by comptiger5000
Connclark - A deep cycle can start an engine fine. It just outputs less burst current, so you need a somewhat bigger battery than you would with a starting battery. Starting engines off marine deep cycles is common in boats. A dual purpose starting/deep cycle like an Optima yellow or an Odyssey will work fine as well.
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I never said you could start an engine off a deep cycle.... I said it would shorten its life. The closer a discharge is to the maximum deliverable current of a battery the more it wears a battery out. Also if your battery is having trouble delivering the current to your starter it will undervolt the starter motor and this can cause it to over heat and burn out.