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Unread 12-19-2012, 11:56 PM   #1
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Default Keeping Battery Terminals Tight

Everyone has their own idea about how to keep battery cables firmly attached to the posts (other than regular checks). I have attended to a number of terminal meltdowns mainly on the 12v batteries of members carts, but don't recollect anyone recommending Locktite (Blue) as a locking agent, together with or without washers and or spring washers. Also no one seems to recommend nyloc nuts which initially should have a better holding ability than regular nuts. Any input appreciated
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Unread 12-20-2012, 01:46 AM   #2
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Default Re: Keeping Battery Terminals Tight

High amperage mechanical connections are subject to heat. Both nylock and loctite are adversely effected by heat. Basically, neither would work well.
I hope this helps
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Unread 12-22-2012, 05:15 PM   #3
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Default Re: Keeping Battery Terminals Tight

The best thing is to tighten the terminals properly to begin with, then check them regularly. I've recently begun using spring-type lockwashers under the nuts, figuring that if the things do loosen ever so slightly, the lockwasher will help to maintain a good electrical connection and prevent a meltdown. Using a torque wrench to tighten the nuts might help, but I don't know offhand what value to use. Probably should just experiment.

The thing with either Nylock nuts or LocTite is that neither really assures a tight connection, they just prevent the nut from unscrewing, which is NOT the same.

As Scottyb points out, the problem is heat, and heat comes from high currents and a bit of resistance. If you use your cart, and especially if you use it hard, you're going to pull high currents through the connections, so that's out of our control. The resistance part IS under our control, at least to a degree: use heavy cables with solidly connected terminal ends and do whatever you can to prevent corrosion. Personally, I slather grease all over the battery terminal, including at its base junction with the case top, BEFORE attaching the cable end. I coat it with grease also, both before and after connecting it.
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Unread 12-22-2012, 05:52 PM   #4
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Default Re: Keeping Battery Terminals Tight

This thread: Lefty Loosey, Righty Tighty has some thoughts on this. Start reading on about the 4th or 5th post I think. Not too long.
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Unread 12-22-2012, 07:53 PM   #5
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I use lock washers and they stay tight with out issue
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