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07-19-2018, 08:18 AM | #1 |
Not Yet Wild
Join Date: Nov 2012
Posts: 14
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Hot Battery Terminal
May be an easy answer but I have a 4/12v 48v setup and it is the setup that was in the cart when I bought it. I've had it for about 2 years and has ran fine until the other day when I smelled something burning and I looked and the main positive terminal was extremely hot and had a lot of acid and had melted a couple of wires. What would cause this and what do I need to do to fix it? I load tested the battery and all is good there. Any help is greatly appreciated!
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07-19-2018, 09:27 AM | #2 |
Cave Dweller
Join Date: Apr 2013
Location: Always On The Move
Posts: 22,209
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Re: Hot Battery Terminal
first i would remove cable those will need to be cleaned/replaced . then I would look it see if the bolt is loose within the lead (posts are hex bolts upside down cased in lead) if so it been over tightened and a new stud needs to be put in the flat lead part of the terminal
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07-19-2018, 09:30 AM | #3 |
Gone Wild
Join Date: Jun 2014
Location: Sunset Bay, TN
Posts: 2,390
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Re: Hot Battery Terminal
Localized heat damage is almost always caused by a dirty, loose and/or corroded connection... Clean everything up with a wire brush, biggest terminal on first followed by smaller connections followed up by the nut, don't use washers unless absolutely needed. Nut should just be a little bit past snug.. Don't over tighten as that will loosen the stud in the lead and cause a loose connection too....
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07-19-2018, 10:43 AM | #4 |
Not Yet Wild
Join Date: Nov 2012
Posts: 14
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Re: Hot Battery Terminal
I will look at the terminal and see if it is loose or not, planning on cleaning it up tonight.
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07-19-2018, 12:46 PM | #5 |
Not Yet Wild
Join Date: Nov 2012
Posts: 14
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Re: Hot Battery Terminal
The terminal post is secure and not moving. The lead has melted some. I will clean them and see if it resolves the issue. I also have new cables coming to replace the existing ones.
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07-20-2018, 08:47 AM | #6 |
Not Yet Wild
Join Date: Nov 2012
Posts: 14
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Re: Hot Battery Terminal
Cleaned the terminal, checked the post and tightened the nut just past snug. The terminal was fine during golf(stop and go) but when riding for a long time it got really hot. The voltage on the battery pack after 3-4 miles was 48.9v. I'm not sure if that has anything to do with the terminal getting hot. Could the issue be coming from the controller/motor?
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07-20-2018, 11:45 AM | #7 |
Cave Dweller
Join Date: Apr 2013
Location: Always On The Move
Posts: 22,209
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Re: Hot Battery Terminal
did you replace that cable ?
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07-20-2018, 12:36 PM | #8 |
Not Yet Wild
Join Date: Nov 2012
Posts: 14
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Re: Hot Battery Terminal
No not yet. I'm just going to replace all of the cables and go to 2 gauge.
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07-21-2018, 09:05 PM | #9 |
Gone Wild
Join Date: Dec 2016
Location: Kingsland, Georgia
Posts: 1,825
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Re: Hot Battery Terminal
To be sure you don't overtighten the nuts, don't use a wrench on them. Use a 1/2" nutdriver instead.
It will also be less likely to touch nearby metal or terminals and short out somewhere. |
07-21-2018, 09:32 PM | #10 | |
Gone Wild
Join Date: Jun 2014
Location: Sunset Bay, TN
Posts: 2,390
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Re: Hot Battery Terminal
Quote:
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