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Thread: How can I stop melting terminals?

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    Sergeant Major russojap's Avatar
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    Default How can I stop melting terminals?

    This is the second time this has happened, the first time I melted the post off of a battery. I was certain they were tight, but maybe because the batteries aren't secured down it's causing the bolts to loosen up. Do I need lock washers? Why did they melt in the middle?
    IMG_20190129_150012435.jpg
    IMG_20190129_145831013.jpgIMG_20190129_145720357.jpgIMG_20190129_145648187.jpgIMG_20190129_145654226.jpg

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    4 Star General Scar59's Avatar
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    Something was loose. I've had that happen. The cable bolts need to be tight. They get over looked sometimes. Securing the batteries is a must, lots of bumps and vibration adds to the issue.
    I'm not saying let's eliminate all the stupid people. I'm just saying let's remove all the warning labels and let the problem work itself out.



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    dumpsterlandingfromorbit! gimpyrobb's Avatar
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    Get new, and clean everything spotless. There is a lot of amps traveling through there.

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    4 Star General frank8003's Avatar
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    Never ever never run batteries in any vehicle that are not secured down.
    'Tiss a quick way to lose money on any liquid filled battery.
    .......and show me a cheap method as to how how to secure battery for the General.

    IMG_1648.jpgbattery box.jpgIMG_1650.jpgIMG_1653.jpgIMG_1654.jpgIMG_1661.jpgIMG_2221.jpgIMG_2223.jpg

    Melting the post off a battery/batteries requires high amps
    which is detrimental to vehicles and humans.
    I was here, had a good time.

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    4 Star General Floridianson's Avatar
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    Problems with the starter it's self?
    Real trucks don't have spark plugs! Me strong as bull smart as tractor. James

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    Sergeant Major Big Tom's Avatar
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    Clean everything good as said ,but also put some dielectric grease between all parts , on electric circuit the biggest cause of heat is a bad connection, loose or dirty will do the same

    Big Tom
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    Scar59 Hit the target. If those terminals aren't tight then something is bound to arc. I've had it happen to me. And make sure the batteries are in there snug.
    1971 M35A2

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    Switch to screw posts batteries. I use type 31’s. Just use a combo wrench once in a while to make sure the nuts are tight.
    It is a poverty when a dictionary must die so a person may spell as they wish.

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    Check you positive cable where it goes through the hole in the frame. Be sure it has not rubbed through.

    Secure your batteries. If they move the cables and clamps can loosen.
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    I once melted a battery terminal and the culprit was not what I would have expected. It was actually caused by a weak battery in my 2 battery set-up. Member 74M35A2 explained it to me in a very simple for me to understand manner. With healthy batteries (12.8 Open Circuit Voltage), much less amperage draw is seen on the electrical components from the batteries to the starter. The weaker the batteries OCV, the amperage goes up somewhat exponentially during starting. I wish I could find the thread where he pointed that out to me as he explained it better. In addition to ensuring batteries are secured properly and cables are clean and tight, make sure they are charged fully.
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