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Thread: Boat Batteries

  1. #1
    Join Date
    Jan 2013
    Location
    SC
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    Default Boat Batteries

    I would like for you to share with me what you connect to your cranking battery and what you connect to your deep cycle battery. I have had two dealers to tell me only connect your motor to your crank battery and everything else to your deep cycle. Then, two dealers told me to connect only the trolling motor to the deep cycle and everything else to the cranking battery.

    Please give me your input on this.

    Thanks
    Jerry "Bo" Bryant
    "Follow me and I will make you fishers of men" (Matthew 4:19)

  2. #2
    Join Date
    Apr 2004
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    shelby(lawndale)
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    Nothing but trolling motor to my deep cycle. Everything else to cranking battery.


    Sent from my iPhone using Crappie.com Fishing mobile app

  3. #3
    Join Date
    Dec 2014
    Location
    Scottsboro Al
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    8,395
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    Deep cycle crank battery with all accessories and big motor hooked to it. Deep cycle battery’s dedicated for trolling motor only !

  4. #4
    Join Date
    Aug 2006
    Location
    Rock Hill South Carolina
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    2,426
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    For me and my 40 hp Mercury 2006 using deep cycle is a big no no. After my original battery for cranking went bad after 3 years I thought it would be smart and use a deep cycle. Well that smart move burned out my charging system and lost $800 dollars. If that wasn't bad enough I thought I had a bad charging system so I left the deep cycle on cranking. Guess what I had to get another charging System. After I burned out the second one. My mechanic called customer support of Mercury and he found out that never use a deep cycle for cranking with that motor model. The charging system cant tell when it is full or does not need to charge so it runs 100 % all the time and it burns out. Mechanic said he should have caught that so second charging system he only charged me parts.

    Now to answer your question. My trolling motor has two deep cycle batteries. I did try to move the accessories from cranking to deep cycle but it made a wrong reading for fuel. Don't know why it does that it just does. So I put the accessories back to cranking. I have a dedicated battery for livescope and 12 inch Garmin monitor. I don't run accessories to much so it is not an issue.
    "Smiles don't leave a lake without one."
    "White Perch the other white meat."
    "CK the Official Tester of floating nets".

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