Trolling motor batteries

mbcassociates

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Sep 8, 2004
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I have a lightweight canoe and use a trolling motor for auxiliary power (when I get tired of paddling).<br /> <br />Agroup 24 battery is very heavy for the canoe. Has anyone tried a lawn and garden battery which is much lighter? If so how many minutes can I expect it to last? Thank you for any advice you can give me.
 

LazyJ

Seaman
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Aug 15, 2004
Messages
50
Re: Trolling motor batteries

You can even get a deep cycle battery in that size. On a favorite stream I can float fish down four miles and it usually takes about an hour to motor back up with trolling motor on high at which time the battery is about spent. Bigtime weight and size advantage for this application.
 

phatmanmike

Captain
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Oct 24, 2003
Messages
3,869
Re: Trolling motor batteries

how bout a 2.5hp tohatsu outboard. weighs less than your current setup and will last longer too!
 

JB

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Mar 25, 2001
Messages
45,907
Re: Trolling motor batteries

Moving to Electrics
 

kd6nem

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Jul 25, 2003
Messages
576
Re: Trolling motor batteries

Do yourself a big favor and select a battery which has at least twice the capacity you expect to ever need. This way you should seldom if ever drain it to the point of damaging it. No battery, not even a deep cycle, can be fully drained without causing permanent damage. You can do it a few times, but the battery will have a drastically shorter lifespan. About half way drained will have little practical effect, however. More smaller batteries will generally be more expensive than one somewhat larger battery.<br /><br />A good friend uses a trolling motor on his canoe. He uses either an Optima or Orbital I think. They are spillproof AGM batteries, and I suspect are lighter for a given capacity. While not cheap, they would do a nice job. Besides, you never know when a wind or current might kick up making you wish you had more battery to fight your way home.
 

FlyBoyMark

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Apr 14, 2002
Messages
934
Re: Trolling motor batteries

There are several "lawn mower" batteries that will work fine. I use a $26.00 battery from Wal-Mart for a lawn mower thats rated 35 AMP/HR. they sell three different models all in the same case. The difference is the plates inside for higher ampacity(there is a noticable weight difference..) The heaviest battery weighs about 18 lbs. and will run a "cheap" Minnkota most of the day if you use the lowest two speeds on a canoe. The canoe will haul buggy when the small trolling motor is turned all the way up. For this application I have found the batteries last about two years before replacement is required if you keep them charged.
 

mbcassociates

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Sep 8, 2004
Messages
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Re: Trolling motor batteries

Thanks for all the good advice. Someone has given me a deep cycle gel battery used to power computer systems during power failures. It is a 33 amp hr battery. Should power a small troling motor on the canoe. I will report back on how it works out.
 

kd6nem

Chief Petty Officer
Joined
Jul 25, 2003
Messages
576
Re: Trolling motor batteries

If ever you care to see more details about the different sorts of deep cycle batteries and how they best like to be charged this is the place to go: Deep cycle FAQ's
 

mbcassociates

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Sep 8, 2004
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Re: Trolling motor batteries

Used the computer battery twice. Got good 3 hours out of it at 50-60% of max power. Not the greatest but at 24 lbs it beats a 40+ lb battery and serves the purpose. Thanks to everyone for your advice.
 
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