Battery problem

Discussion in 'Outboard Maintenance' started by Gator_Bob, Dec 14, 2008.

  1. Gator_Bob

    Gator_Bob Well-Known Member

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    Take a look at this and tell me what went wrong. This powered my trolling motor. I only used my trolling motor for about one hour the whole day.[​IMG]
     
  2. Gator_Bob

    Gator_Bob Well-Known Member

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    Here is the picture[​IMG]
     

  3. noeettica

    noeettica Well-Known Member

    Bad connection = Resistance = HEAT
     
  4. iMacattack

    iMacattack busy, too busy

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    picture of you circuit breaker? picture of you power wire?

    That looks BAD!
     
  5. Brett

    Brett > PRO STAFF <

    Looks like you cooked the threaded terminal off the battery.
    If the copper inside your wire was corroding, which does happen,
    resistance to current flow increases as corrosion increases.
    The electrical current passing through the corroded area will build up
    heat which can melt the connection and/or start a fire.
    If the connector at the terminal was loose, it might have been arcing,
    which will do the same thing.

    Solutions:

    Never use wing nuts to connect a cable to a battery!
    They loosen easily. I know, that's the way you bought the battery.
    Ever wonder why your car/truck battery doesn't have wing nuts?
    Now you know!

    Stainless steel Ny-loc nuts don't vibrate loose.
    Yes, they do require the use of a wrench.
    Snug but don't over-tighten

    Read Cable Connectors at bottom of page:

    http://www.firststartbatteries.com.au/battery-problems.html

    Buy an inexpensive volt-ohm meter
    and check the resistance in your cables.
    If the resistance doesn't read zero, find out why! Fast!
    Think about all the places your wiring runs,
    and imagine if a hot spot formed there...

    http://www.boatingmag.com/article.asp?section_id=3&article_id=849
     
  6. noeettica

    noeettica Well-Known Member

    you can also run the Tm (in water) for a couple of minites and feel the connections to see if they are getting hot ...or whip out your trusty Infered non contact thermometer ... LOL Dave
     
  7. Un-shore

    Un-shore Well-Known Member

    WOW! you got lucky that didn't catch fire!
     
  8. Gator_Bob

    Gator_Bob Well-Known Member

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    So........I guess the lesson here is to be sure that your nuts are tight before you leave the dock or check your nuts while trolling. Thanks!
     
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