Battery terminal protection

[DonMuncy]

Does anyone have any thoughts or recommendations for something to put on the battery terminals to prevent or slow down corrosion.

[Rhumbline]

Good question.  I've been wondering whether Dow Corning 4 (DC4) would work? 

[N201MKTurbo]

Buy a RG battery. I haven't had any corrosion problems sense I started using them. When I was using wet cell batteries I had to remove the battery box, strip and reprint it every few years.

[DonMuncy]

I have an RG. It doesn't corrode up as much., but it still generates some.

[larryb]

Time for a Concorde. No corrosion with that.

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[DonMuncy]

I have a Concorde.

[Nemesis]

Try Permatex Battery Protector and Sealer #80370. They also have a cleaner only #80369.

Available at your favorite PMA STC TSO auto parts store.

[larryb]

Just a thought... If you have a Concorde and are still getting corrosion I'm wondering what your charging voltage is? Mine is 14.1 on the jpi. If you voltage is too high you might be out gassing more. I see no corrosion on mine.

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[DonMuncy]

I keep my battery on a Battery Minder full time. The only corrosion was on the "ground" (-) terminal. From the ratio of alternator vs charger time, I would presume the alternator charge level would not have a lot to do with it. But I don't claim to have much knowledge.

[larryb]

Same here, battery minder (Concorde specific model) when not flying. It's not a matter of time but it is a matter of voltage. If the voltage is too high the gasses will not recombine, pressure will build, and gas will vent. And vented gas can cause corrosion. It would not take long to put the battery into an overcharge condition, an hour or two depending.

[chrisk]

I would expect a silicon dielectric grease would work.  However I have no experience with it in aircraft.

[orionflt]

Try Permatex Battery Protector and Sealer #80370. They also have a cleaner only #80369.

Available at your favorite PMA STC TSO auto parts store.

+1. I haven't needed to use it on my plane,I just make sure the connections are clean and tight and I have had little to no corrosion on both gill and concord batteries.....I prefer the concord it seems to have better qualities over all.

[carusoam]

The battery vents on the R are covered and vented (via hose) overboard...

It's like having a plastic battery box around the vents themselves.

As a result, The terminals are nice and clean...

My C had the battery box and the terminals were inside the box. The aluminum box is vented the same way, via hose.

My C's mechanic showed me how well hot water cleans the terminals...

Best regards,

-a-

[N201MKTurbo]

When I used flooded cell batteries I would use a sacrificial anode in the battery box. It seemed effective at eliminating terminal corrosion.

Throw a couple of pennies in the bottom of the battery box before you put the battery in.

[bumper]

Dow DC-4, or other silicone dielectric will work well.

 

Another helpful method is to mix a strong solution of baking soda in water, then saturate a paper towel or two in the solution. Fold wet towel into a narrow strip and place in microwave. Nuke until dry. Put strip over battery filler caps and it will neutralize acid fumes and keep battery compartment corrosion free.

 

bumper