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Dec 30th, 2023
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 Testing Batteries
#5752014
01/23/11 07:49 PM
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Joined: Feb 2009
Posts: 132
MHB07
OP
Outdoorsman
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OP
Outdoorsman
Joined: Feb 2009
Posts: 132 |
WonderIng if and how to check my trolling motor batteries with a digital multimeter. Any help and what the volts should read.
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Re: Testing Batteries
[Re: MHB07]
#5753083
01/24/11 01:08 AM
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Joined: Feb 2009
Posts: 132
MHB07
OP
Outdoorsman
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OP
Outdoorsman
Joined: Feb 2009
Posts: 132 |
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Re: Testing Batteries
[Re: MHB07]
#5753102
01/24/11 01:11 AM
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Joined: Jun 2009
Posts: 1,421
txcntryboy
Extreme Angler
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Extreme Angler
Joined: Jun 2009
Posts: 1,421 |
Volts should be 12-12.6
Red to +, Black to -. Set your meter on DC 20 and you should be good.
Last edited by txcntryboy; 01/24/11 01:13 AM.
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Re: Testing Batteries
[Re: txcntryboy]
#5753344
01/24/11 01:55 AM
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Joined: Feb 2009
Posts: 81
BACKSEATWILLIE
Outdoorsman
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Outdoorsman
Joined: Feb 2009
Posts: 81 |
A fully charged battery in perfect condition should read 13.3v.
24v system: the two batteries fully charged should be 26.6v
Use instructions above to test.
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Re: Testing Batteries
[Re: BACKSEATWILLIE]
#5753779
01/24/11 03:17 AM
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Joined: Feb 2009
Posts: 132
MHB07
OP
Outdoorsman
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OP
Outdoorsman
Joined: Feb 2009
Posts: 132 |
Thanks guys got 2 that read around 12.7 and one that reads 0.74 guess it pooped out.
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Re: Testing Batteries
[Re: MHB07]
#5842059
02/13/11 05:10 AM
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Joined: May 2010
Posts: 270
Mike2718
Angler
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Angler
Joined: May 2010
Posts: 270 |
I don't know if you have a Harborfreight near you, but here is a link to the tester I use. http://www.harborfreight.com/digital-automotive-battery-analyzer-66892.htmlIt will test voltage, resistance and cranking amps. It will tell you if the battery is good or bad. A multimeter does not give a complete picture. Many times a bad battery will show the correct voltage but will not have enough amps to be any good.
Have a Blessed Day,
Mike
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Re: Testing Batteries
[Re: BACKSEATWILLIE]
#5842319
02/13/11 11:24 AM
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Joined: Oct 2004
Posts: 658
C.
Pro Angler
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Pro Angler
Joined: Oct 2004
Posts: 658 |
A fully charged battery in perfect condition should read 13.3v.
24v system: the two batteries fully charged should be 26.6v
Use instructions above to test. Mr Willie - that is not correct. If you're reading 13.3 volts on your batteries, the charger is still plugged in and has gone to float mode! ~12.7 volts is the normal terminal voltage for a fully charged battery! There was a previous post discussing this issue a couple of days ago. C.
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Re: Testing Batteries
[Re: C.]
#5843360
02/13/11 06:41 PM
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Joined: Aug 2010
Posts: 1,046
Eastexn
Extreme Angler
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Extreme Angler
Joined: Aug 2010
Posts: 1,046 |
~12.7 volts is the normal terminal voltage for a fully charged battery!
Amen, Most fully charged batteries read 12.65. I've never seen one read 13V or higher unless the charger was still on. A cheap hydrometer ($5 to $10) will indicate the internal condition of the cells individually. You don't even have to know how to read them as the float is color coded.
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