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  1. #1
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    going from 24 v to 36 v

    ok so im a little embarrased i have to ask this after all the years and boats ive owned but here it go's. i just bought a new to me boat it is all set up for a 24 as it came with an 80 terrova. i got a stupid deal on a 112 foretrex and sold the terrova. here is the question. i have all 3 batteries i need. but the boat is wired so that there is a positive and negative going to each battery. how do i wire in the third battery....

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  3. Member
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    #2
    The same. IF in doubt, put the 3rd battery between the two you have, with positive to negative, one from each current battery.

  4. Electrical/Wiring/Trolling Motors Moderator CatFan's Avatar
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    #3
    You likely have it jumpered in the plug. Connecting a new battery between the existing batteries would be creating a direct short across the new one. You need to verify that you have it jumped in the plug, then wire the batteries appropriately.
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  5. Member
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    #4
    catfan what am i looking for to see if its jumped in the plug? the plug is standard 4 prong and there are two sets of pos and neg in the back one set to each current battery

  6. Electrical/Wiring/Trolling Motors Moderator Jonestrollingmotor's Avatar
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    #5
    With two sets of wires (one set to each battery) and a 4 prong plug you will most likely have it jumped in the plug. Disassemble the plug and look for a jumper between two of the wires. If so, you can take the positive off battery 2 and place on battery 3 positive. Then place a jumper from battery 2 positive to battery 3 negative and have 36V on the same connections at the plug that you previously had 24.
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  7. Member
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    #6
    thank you so much