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Dec 30th, 2023
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 How to find bad battery in 36v Trolling motor set up
#4136989
11/10/09 04:18 PM
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Joined: Oct 2009
Posts: 1,020
Hammbone
OP
Extreme Angler
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OP
Extreme Angler
Joined: Oct 2009
Posts: 1,020 |
I am reading 36 volts at the plug but on the water thrust & power drop off fast, Does this sound like one of the 3 batterys is bad and if so what is the easyest way to locate the bad one. Thanks
Mike Hamm, Lake Ray Roberts
USMC (Retired)
If you ain't Flipp-in your a-miss-in
michael.hamm1@verizon.net
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Re: How to find bad battery in 36v Trolling motor set up
[Re: Hammbone]
#4137009
11/10/09 04:21 PM
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Joined: Aug 2006
Posts: 7,186
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,186 |
get a battery load tester.
they are cheap at harbor freight tools.
S2 Marine 714 S. Main Quitman, Tx. 75783 www.s2marine.coms2marinesales@gmail.com Blazer Boats, Excel Boats, Sun Chaser Pontoons, Thor boats, Legend Craft Boats
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 Re: How to find bad battery in 36v Trolling motor set up
[Re: steve@S2Marine]
#4137116
11/10/09 04:42 PM
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Joined: Oct 2009
Posts: 1,020
Hammbone
OP
Extreme Angler
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OP
Extreme Angler
Joined: Oct 2009
Posts: 1,020 |
Thanks Steve, appreciate the help..
Mike Hamm, Lake Ray Roberts
USMC (Retired)
If you ain't Flipp-in your a-miss-in
michael.hamm1@verizon.net
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Re: How to find bad battery in 36v Trolling motor set up
[Re: Hammbone]
#4137155
11/10/09 04:52 PM
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Joined: Apr 2007
Posts: 596
JSIG
Pro Angler
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Pro Angler
Joined: Apr 2007
Posts: 596 |
Autozone has the load tester & will test them for you @ no charge.
John 1998 Promaster 190V, Johnson 150  
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Re: How to find bad battery in 36v Trolling motor set up
[Re: JSIG]
#4138987
11/11/09 01:06 AM
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Joined: Oct 2008
Posts: 85
gotfish?
Outdoorsman
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Outdoorsman
Joined: Oct 2008
Posts: 85 |
Walmart will test them for free as well and give you the printout for each battery's results.
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Re: How to find bad battery in 36v Trolling motor set up
[Re: gotfish?]
#4139041
11/11/09 01:29 AM
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Joined: Oct 2004
Posts: 12,182
Mike Keenan
TFF Guru
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TFF Guru
Joined: Oct 2004
Posts: 12,182 |
I guess I need to go to walmart as well. my cranking battery not so good right now
R.I.P. Mike "pappy" "broken rod" Green born 07-16-62 on to better fishing 06-10-08. www.basscat.com
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Re: How to find bad battery in 36v Trolling motor set up
[Re: Mike Keenan]
#4139784
11/11/09 06:10 AM
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Joined: Feb 2006
Posts: 48,345
OldFrog
TFF Guru
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TFF Guru
Joined: Feb 2006
Posts: 48,345 |
Load testing is the best way...but a good indicator is to charge them all up fully. Then put a digital voltmeter across them. Usually...and I mean "usually"...the one with the lowest voltage will be the culprit. It's not foolproof, but it's a decent rule of thumb, especially if there is a significant voltage difference.
Now, Donald...please pick John Bolton for your running mate.
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Re: How to find bad battery in 36v Trolling motor set up
[Re: OldFrog]
#4140014
11/11/09 12:57 PM
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Joined: May 2003
Posts: 11,586
gary purdy
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 11,586 |
When all else fails I do a hydrometer test on each cell. Had a battery recently that customer purchased at Wally world. At 6 months old he started having problems, so he took it back, they said it tested good, I did a hydrometer test and it showed a week cell. With my written diagnosis in hand, he went back and they replaced it.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
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 Re: How to find bad battery in 36v Trolling motor set up
[Re: gary purdy]
#4184292
11/24/09 04:06 PM
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Joined: Oct 2009
Posts: 1,020
Hammbone
OP
Extreme Angler
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OP
Extreme Angler
Joined: Oct 2009
Posts: 1,020 |
Thanks for all the help; I actually had TWO BAD BATTERIES, so I just replaced all three....and bought a load tester....
Mike Hamm, Lake Ray Roberts
USMC (Retired)
If you ain't Flipp-in your a-miss-in
michael.hamm1@verizon.net
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Re: How to find bad battery in 36v Trolling motor set up
[Re: Hammbone]
#4184445
11/24/09 04:43 PM
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Joined: Nov 2005
Posts: 4,061
Mike Halfmann the boatmann
TFF Team Angler
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TFF Team Angler
Joined: Nov 2005
Posts: 4,061 |
With two bad batteries, I would be looking at the on board battery charger if you have one.
mike halfmann
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Re: How to find bad battery in 36v Trolling motor set up
[Re: Mike Halfmann the boatmann]
#4185334
11/24/09 09:09 PM
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Joined: Feb 2006
Posts: 48,345
OldFrog
TFF Guru
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TFF Guru
Joined: Feb 2006
Posts: 48,345 |
With two bad batteries, I would be looking at the on board battery charger if you have one. 
Now, Donald...please pick John Bolton for your running mate.
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Re: How to find bad battery in 36v Trolling motor set up
[Re: OldFrog]
#4187732
11/25/09 03:47 PM
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Joined: Oct 2009
Posts: 1,020
Hammbone
OP
Extreme Angler
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OP
Extreme Angler
Joined: Oct 2009
Posts: 1,020 |
Thanks, I forgot to mention I also installed a "ProTournament 300 Quad Battery Charger" and it is everything they say it is.... VERY SATISFIED  
Mike Hamm, Lake Ray Roberts
USMC (Retired)
If you ain't Flipp-in your a-miss-in
michael.hamm1@verizon.net
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