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leonides
MMT Pro Member
Joined: Tue Sep 11, 2012 6:28 am
Posts: 60
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 Is the battery receiving charge ? How to find out if the battery is receiving charge from the motor ?
It is a Kohler 25, efi on a Backwater unit.
Please let me know.
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| Mon Jan 30, 2017 7:37 pm |
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flint87
MMT 1000 Club
Joined: Sun Dec 14, 2014 2:21 pm
Posts: 3214
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Re: Is the battery receiving charge ? If you run for a while and you are running your lights and electrical accesories, if the battery dies and won't start the motor back then it's not charging.  No clue on how to actually check it though. Sent from my iPhone using Tapatalk
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| Mon Jan 30, 2017 8:25 pm |
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Old School
MMT 1000 Club
Joined: Thu Dec 17, 2009 9:44 pm
Posts: 3067
Location: Earth
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Re: Is the battery receiving charge ? Couldn't you test the battery with a volt meter while its not running and then test it when it is running and see if its different
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Gator tail
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| Mon Jan 30, 2017 8:39 pm |
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brycecheramie
MMT 1000 Club
Joined: Thu Nov 04, 2010 7:38 am
Posts: 4323
Location: Cut Off, La.
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Re: Is the battery receiving charge ?
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Refurbishing a Prodrive
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| Mon Jan 30, 2017 8:42 pm |
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leonides
MMT Pro Member
Joined: Tue Sep 11, 2012 6:28 am
Posts: 60
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Re: Is the battery receiving charge ? thanks, will try that tomorrow.
P.
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| Mon Jan 30, 2017 9:25 pm |
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CypressCritter
MMT F.E.
Joined: Tue Aug 26, 2014 10:36 am
Posts: 822
Location: Jefferson TX
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Re: Is the battery receiving charge ? Put a meter to the battery read voltage(somewhere around 12.8vdc or higher means the battery is charged) start engine and then run it up to at least 1200 rpms or more, read voltage, if the charging system is working the voltage will be higher than you read before starting. The biggest draw most mud motors is the electric clutch, so take all reading with electric clutch engaged.
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SEAARK FX 2472 CC Merc 150HP 4Stroke(CypressCadillac)
Uncle J Custom - 19x54 CC Skiff w/40XD GTR
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| Tue Jan 31, 2017 10:35 am |
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Smoke
MMT 1000 Club
Joined: Fri Jan 23, 2009 1:27 pm
Posts: 1095
Location: SW Michigan
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Re: Is the battery receiving charge ? You are going to have to rev the motor at or above 2000 rpms to get it to read a charge. CDI motors have a charging system that charges at a lower rpm but i'm sure your 25 Kohler doesn't. If you stick your leads on the battery post and rev motor above 2000 it should read around 17-20 amps. Mine is a non cdi and when charging it reads 19.7 amps with a "20 amp charging system" changed it to amps def. not volts!
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1854 Prodigy Open
HDR/Stage 3 mods
Prodigy Boats Pro Staff
BPS Swamp Staff Member
Blackwater Marine LLC.
Quote classic by rangerp: "Red seemed to be enjoying herself, and I assume by the look on her face was about to hit the high-note and throw a locate as she treed the possum."
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| Tue Jan 31, 2017 10:54 am |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm
Posts: 16915
Location: Rowlett, TX
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Re: Is the battery receiving charge ?
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| Tue Jan 31, 2017 11:04 am |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm
Posts: 16915
Location: Rowlett, TX
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Re: Is the battery receiving charge ?
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| Tue Jan 31, 2017 11:15 am |
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CypressCritter
MMT F.E.
Joined: Tue Aug 26, 2014 10:36 am
Posts: 822
Location: Jefferson TX
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Re: Is the battery receiving charge ? 20vdc means something ain't right. On the current of a clutch, never checked it, just know ever time mine has had issues it is the switch. Third time replaced with a 30 amp rated one. The clutch, if not running anything else, is the only thing that is drawing on the charging and battery. I have a digital volt meter installed and the biggest drop in voltage is engaging the clutch. but then led lights never draw much either. (opps) that and then the amplifier for the tunes 
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SEAARK FX 2472 CC Merc 150HP 4Stroke(CypressCadillac)
Uncle J Custom - 19x54 CC Skiff w/40XD GTR
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| Tue Jan 31, 2017 11:34 am |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm
Posts: 16915
Location: Rowlett, TX
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Re: Is the battery receiving charge ? The amplifier and lights should be drawing more than the clutch. Engaging a device that draws less than 4 amps shouldn't cause a voltage drop. Absolutely should not require a 30 amp switch. That is not supposed to be a heavy load. Put a meter on it and see what the problem is.
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| Tue Jan 31, 2017 11:46 am |
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