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hi


You are replying to:
jaultman
Posted 5/26/2016 8:22 AM (#818272 - in reply to #818149)
Subject: Re: maxing amp-hours with 12V trolling motor




Posts: 1828


I actually did a little more research and thinking too...

A battery gets its maximum amp-hours with low current draws. So to put it simply but quantified, if a battery is rated for 100 amp-hours, you might get 50 hours with a 2-amp draw, and maybe 33 hours at 3 amps, but at 10 amps you won't get the 10 hours that you might assume. and at 20 amps, much less than 5 hours.

And that's aside from the efficiency considerations related to heat loss.

So parallel is the way to go.

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