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Thread: How to run parallel hookup for trolling batterys?

  1. #1
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    Default How to run parallel hookup for trolling batterys?


    Im needing some help on how to run a parallel setup for my trolling batterys. I have a cranking battery and two seperate trolling batterys that I use and usually just swap the two out when they are dead or running low on juice. How do I hook the two trolling batterys together to get more running time from the two? Any help is greatly appreciated. Thanks!!

  2. #2
    gabowman is offline Super Moderator * Crappie.com Supporter
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    For 12 volt trolling motors you hook positive to postive, negative to negative. You can get the cables at Walmart or most anywhere. I just run the trolling motor leads to one battery (hot and ground).

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    if ur batteries arnt the same age and size ,one will pull the other one down.thats how i had my boat rigged first of last year,then i went to quick disconnect ends and unplug one when it goes down and plug the other one in

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    Barnacle Bill is offline Super Mod and 2014 Crappie.com Man of the Year * Crappie.com Supporter
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    Like this (bottom example)
    Name:  Batteries 12&24.jpg
Views: 667
Size:  29.3 KB
    Fair Winds and Following Seas

    Bill H. PTC USN Ret
    Chesapeake, Va


  5. #5
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    Thanks everyone for the great feedback. I will go buy some connectors and get it hooked up

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    Quote Originally Posted by Barnacle Bill View Post
    Like this (bottom example)
    Name:  Batteries 12&24.jpg
Views: 667
Size:  29.3 KB
    A slight variation to the example Bill posted is to attach the negative lead from the TM to battery #2 rather than battery #1. This is supposed to keep the discharge rate between the batteries more even by forcing the current through both jumper cables. It works on paper but I'm not so sure it is easy to measure the difference in the real world.
    Keith
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    2010 Buggs Bash Smallest Crappie Award

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    skeetbum's Avatar
    skeetbum is offline Crappie.com Legend - Moderator Jig Tying Forum * Crappie.com Supporter
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    You'll be happy with the 2 batteries together. I used to wear down 1 battery when fishing with my old aluminum boat, til I tied both together. I never ran out of juice after that. Works best with 2 equal use/age batteries. I bought 2 new identical batteries at wally and smiled right up until I sold the boat and moved up. All good info above.
    Creativity is just intelligence fooling around

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