Re: Corrosion caused by batteries.

[Bob La Londe <none@none.com99>]

On 11/12/2019 1:16 PM, Jim Davis wrote:
> On Tuesday, November 12, 2019 at 12:27:41 AM UTC-5, cha...@xxxxxxxxx wrote:
>> I am getting fed up with the corrosion at the negative or positive
>> terminals of Duracell AA and AAA batteries that come preinstalled
>> (from the manufacturer/distributor) in wireless motion detectors and
>> door/window contacts, as well as corrosion within the devices after a
>> year or two on the job site, all residential.
>>
>> Are there any tricks to prevent corrosion? Vaseline, jells, etc? Does
>> anyone have a clue as to the root cause of corrosion? I know that
>> water/high moisture is a prime catalyst especially on door switches
>> that are near the bottom of an exterior door. Does the passage of
>> voltage from the battery to the battery holder have an effect, and if
>> so, how? It's also obvious (duhhh)that if the battery(s) are absent
>> from the battery holder compartment there is never any corrosion in
>> the holder.
>>
>> Charlie
>
> I don't have that problem but as a (salt water)  boat owner for many years, I have successfully used Vaseline and conducting Silicone grease on electrical connections. The Vaseline was used on boat battery terminals and the silicone was used on smaller electrical connections. Both very messy to work with but did the job.
> The only place I could get the Silicone grease in my area was at an automotive parts store. Comes in small squeeze tubes. Just need to smear a coating on connections with just a little excess.
>
> I got the idea about the Silicon from observing that the TV cable guys would use it under their rubber connection boots that they would cover their outdoor connections with.
>


I was able to get dielectric silicone grease from ADI in squeeze tubes
much cheaper than any local source.  Decent size squeeze tubes.  Big
enough to get your hand around.  I still have one in my specialty lubes
cabinet in the shop.