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Battery conections?

Old 01-07-2003, 03:01 PM
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Default Battery conections?

After cleaning all battery posts and terminals, is it better to spread some dielectric grease on before conecting , or hooking them up dry and then covering with the grease?
I seem to recall reading a thread a while back stating that dielectric was non-conductive

Cheers... Tyee.
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Old 01-07-2003, 03:09 PM
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Default Battery conections?

Yes there was a thread about dielectric and other products waaaaaaaay back.

What I use on my battery posts is a product I have been using for 30 years or more.
Ox-Guard is a pasty stuff that comes in a tube and I use it on batteries and other connections.

I clean the battery posts, spread Ox Guard on all parts and re assemble, then cover the posts with more.
You can get it Home Depot and other stores.

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Old 01-07-2003, 03:20 PM
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Default Battery conections?

booby trap is right on with regard to procedure. I use a teflon based grease. Holds up better in the Florida heat.
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Old 01-07-2003, 06:19 PM
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Default Battery conections?

On this subject kinda, I have been using batteries with the two posts. I use the threaded post with lock nuts. I have been told by the tech. at my marina to use the auto type lugs. More surface area to handle the high cranking load on my Fichts. I am adding battery switches and can make the change over no problem. Will these lugs come lose and corrode faster in an offshore boat? Thanks Katcap
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Old 01-07-2003, 09:09 PM
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Default Battery conections?

Yes dielectric grease is non-conductive, I use it in my business (HV electrical work), it has insulating values between 1000 and 2000v/mil. (1/1000 inch)
Iwould NEVER use it between the conductors on hi-amperage connections like battery terminals.

I some times use a product called Cool-Amp or Conducto-lube to decrease the resistance of electrical joints.

I think your best bet is to clean the (lead) terminals properly and connect them right away as lead forms an oxide film very fast.

Dielectric grease could then be applied over the entire terminal to prevent corrosion, the stuff that they sell in the auto stores to spray on to battery terminals is probably just as good and cheaper.


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Old 01-08-2003, 06:59 PM
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Default Battery conections?

I've used the stuff for years on contacts and connections on my boats . I even use it on instrument plugs that aren't taken down often. The pressure of sliding togeather or tightening the connectors forces the metal contact. Originally I used the cheap stuff from ACE but I have reformed and now use the marine version. haven't had any circuit problems due to lack of voltage ect. However, I usually use Corrosion Block spray on battery terminals and terminal strips about 3 times a year- also a great marine product.

Sapelo kat Rider
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