Proper goop to protect battery terminals? - Page 2 - Electrician Talk - Professional Electrical Contractors Forum
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Old 04-23-2019, 12:23 PM   #21
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I had a part time job in a service station when I was a kid, did minor repairs and etc. The mechanic was a friend of mine and knew I was handy with electricity and electronic issues, so once in a while he'd have me look at one that had him stumped.



I fixed a lot of things by just brightening up the battery and ground strap terminals and lugs, greasing them up with silicone grease, and putting them back together. I go to where I did that before I'd even try to figure things out. A lot of times the connections looked fine and were tight, but this fixed things. I imagine the oxidization can creep in there, swell a bit and you wind up barely connected or no connection.



Years later maintaining the batteries for a telco CO, everyone used the manufacturer supplied terminal grease, those systems worked great and I don't ever remember getting a bad connection on a terminal.
With lead acid battery you can have acid migration, that is where the acid creeps up the post as no post seals are perfect. This causes a hard crust that is not conductive and leads to high resistance connections.
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Old 04-23-2019, 12:45 PM   #22
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With lead acid battery you can have acid migration, that is where the acid creeps up the post as no post seals are perfect. This causes a hard crust that is not conductive and leads to high resistance connections.

I wonder if gooping up the base of the post just halted the creep up, filling the gaps in the seal around the post.
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Old 04-23-2019, 12:46 PM   #23
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Ive always used this stuf on car batteries

Clean with baking soda and vinegar, then spray things on

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That’s the sort of stuff I’ve used in the past, but am just trying to get by with what I have on hand. Won’t be the first. Time to be called a cheapskate!
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Old 04-23-2019, 02:59 PM   #24
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That’s the sort of stuff I’ve used in the past, but am just trying to get by with what I have on hand. Won’t be the first. Time to be called a cheapskate!
It's a lawnmower, so, I wouldn't use anything that is flammable like auto grease. Is the battery under the seat or near a hot engine?
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Old 04-23-2019, 03:07 PM   #25
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I wonder if gooping up the base of the post just halted the creep up, filling the gaps in the seal around the post.
It has to do with the post seals newer batteries they use a better sealant, little stops it completly, but you can slow it down
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Old 04-23-2019, 03:48 PM   #26
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That’s the sort of stuff I’ve used in the past, but am just trying to get by with what I have on hand. Won’t be the first. Time to be called a cheapskate!
CHEAPSKATE!

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Old 04-23-2019, 10:12 PM   #27
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Dump some bug juice on it before you tighten. Good drink, and problem solved
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Old 04-26-2019, 06:51 PM   #28
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Sparling I hope, dielectric grease will conduct and if it melts and contacts any metal components of the engine will lead to self-discharge of the battery, in a UPS system it results in ground fault alarms..

Where did you get the idea dielectric grease conducts?
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Old 04-26-2019, 09:15 PM   #29
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Where did you get the idea dielectric grease conducts?
My mistake dielectric grease does not conduct, they do make a Conductive grease. Different animals.
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Old 04-26-2019, 10:40 PM   #30
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I would think you would want something di-electric
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Old 04-26-2019, 10:54 PM   #31
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On all of my vehicles, I have always used regular wheel bearing grease. Most anything to seal the connection will be beneficial.
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Old 04-26-2019, 11:31 PM   #32
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I use either silicone rubber grease like I use on load breaks or super lube multi purpose, I always have a couple tubes of each in the trucks. Always have my battery brushes too, common fix on gensets and engine driven compressors is messed up batteries.
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