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#11952254 - 11/26/16 01:45 PM Battery Question
TxRanger1 Offline
Outdoorsman

Registered: 12/31/15
Posts: 248
Loc: Humble,Tx
I have a 24v trolling motor set up. There are 2 batteries that I would call normal size, they are 31's. The 3rd battery is much bigger. What is the bigger battery? It is not charging any more and I need to replace it. Can it be replaced with a 31 like the 2 other ones that I have or do I need to get that big one again?

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#11952258 - 11/26/16 01:54 PM Re: Battery Question [Re: TxRanger1]
Bruce's Guide Service Online   content
TFF Team Angler

Registered: 09/04/03
Posts: 3738
Loc: southlake
Sounds like your starting battery. The two for the trolling motor one for starting.
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#11952279 - 11/26/16 02:20 PM Re: Battery Question [Re: TxRanger1]
V-Bottom Offline
Pro Angler

Registered: 06/18/16
Posts: 853
Loc: Galv. Cnty
1000 MCA Starting Battery ?
$90 or so at O'Reilys w/ core exchange


Edited by V-Bottom (11/26/16 02:22 PM)
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#11952324 - 11/26/16 03:08 PM Re: Battery Question [Re: TxRanger1]
TxRanger1 Offline
Outdoorsman

Registered: 12/31/15
Posts: 248
Loc: Humble,Tx
My trolling motor is hooked to it to make a 24v circuit.

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#11952330 - 11/26/16 03:12 PM Re: Battery Question [Re: V-Bottom]
TxRanger1 Offline
Outdoorsman

Registered: 12/31/15
Posts: 248
Loc: Humble,Tx
Originally Posted By: V-Bottom
1000 MCA Starting Battery ?
$90 or so at O'Reilys w/ core exchange


Cant find it on their web site but I will head over there and look.

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#11952472 - 11/26/16 05:12 PM Re: Battery Question [Re: TxRanger1]
Gamblinman Online   content
Extreme Angler

Registered: 11/26/02
Posts: 2300
Loc: Yantis, TX
Originally Posted By: TxRanger1
My trolling motor is hooked to it to make a 24v circuit.


That sounds more like a 36V...if you're starting battery is hooked up to that one too.
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#11952637 - 11/26/16 07:34 PM Re: Battery Question [Re: TxRanger1]
Bobby Milam Online   content
Extreme Angler

Registered: 07/13/14
Posts: 2248
Loc: Arlington
Why don't you post a picture of the setup. Generally, you'll have two batteries on one side wired together straight to your trolling motor. Then you'll have a third which should be wired to your motor and accessories. Could it be wired to a switch between your trolling motor batteries and it so you can flip it to one of the trolling motor batteries if it went dead and use one of them to crank the motor?

If it is your cranking battery, you need to look at the cranking power and capacity to decide what you want. You need enough capacity to run any fishfinders, livewells, bilge pumps, lights, etc. and still have enough power to crank your motor.

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#11952700 - 11/26/16 08:24 PM Re: Battery Question [Re: TxRanger1]
Bob Landry Offline
Extreme Angler

Registered: 08/10/11
Posts: 2318
Loc: Austin, Tx
I split mine up so that the engine starting battery only cranks and provides power to the tach, fuel gauge and hour meter. Trolling motor runs off a 24V bank along with the electronics and lights. I come off the first battery to get the 12V to run the console. That was by my design. I can always get home without lights or stereo, but I don't want anything drawing off of the start battery. My instrument lights operate off the nav light switch. I don't need lights on the instruments until I need running lights to run at night.
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