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lithium batteries killed trolling motor ? #14535272 11/14/22 05:06 PM
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Mo Online Content OP
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bought 3 lithium batteries , my Xi5 ran for 20 seconds , then died . Voltage at plug = 40 volts. Are trolling motors not engineered for lithium ?

Is there a device to limit voltage to 36 ?


MO



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Re: lithium batteries killed trolling motor ? [Re: Mo] #14535406 11/14/22 07:01 PM
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checked breaker? don't you have one of the newer tm's?


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Re: lithium batteries killed trolling motor ? [Re: Mo] #14535500 11/14/22 08:50 PM
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I have circuit breakers installed , they were not thrown, I have power at the plug . Motorguide rep says lots of folks running lithium batteries with
no issues .

Mo



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Re: lithium batteries killed trolling motor ? [Re: Mo] #14535531 11/14/22 09:35 PM
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Did you charge the batteries with an on board charger first? Leaving TM plugged in can fry it.....


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Re: lithium batteries killed trolling motor ? [Re: Mo] #14535546 11/14/22 09:47 PM
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batteries are not the issue, 12v is 12v to a tm and 40 volts is within spec for newer models.


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Re: lithium batteries killed trolling motor ? [Re: hopalong] #14535645 11/14/22 11:34 PM
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Originally Posted by hopalong
batteries are not the issue, 12v is 12v to a tm and 40 volts is within spec for newer models.



^^^This^^^

Re: lithium batteries killed trolling motor ? [Re: bronco71] #14536136 11/15/22 02:22 PM
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Originally Posted by bronco71
Did you charge the batteries with an on board charger first? Leaving TM plugged in can fry it.....



Motor worked fine till it did not. I have never unplugged my TM when charging , Maybe I will in the future.

MO



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Re: lithium batteries killed trolling motor ? [Re: Mo] #14536162 11/15/22 02:36 PM
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Always throw you’re TM breaker.

Re: lithium batteries killed trolling motor ? [Re: forkduc] #14536497 11/15/22 06:57 PM
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Originally Posted by forkduc
Always throw you’re TM breaker.



that is how I do it too.

mo, check all your ground connections for tight, most of the time, unless something burned up that is what causes the problem.

you might also pull the top cap on the tm and look for burned areas around wires and the circuit board.


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Re: lithium batteries killed trolling motor ? [Re: Mo] #14536749 11/15/22 09:40 PM
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I'm off tomorrow , so looks like a trip to LakeSide Trolling motor repair is in my future.

I will update this thread when I get a diagnosis.

Mo



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Re: lithium batteries killed trolling motor ? [Re: Mo] #14536959 11/16/22 01:28 AM
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A 36v lithium has to charge up to 48v for a full charge, from what I’ve read (might have been 46v). But maybe that’s what got the TM.

Re: lithium batteries killed trolling motor ? [Re: hopalong] #14548576 11/28/22 04:58 PM
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Originally Posted by hopalong
checked breaker? don't you have one of the newer tm's?


appears that this is the problem

thank you


MO



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Re: lithium batteries killed trolling motor ? [Re: Mo] #14548811 11/28/22 08:34 PM
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lake fork FISHERMANS COVE MARINA/reservations - 903 474 7479
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