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Battery Cable Contact Corrosion

Discussion in 'Photovoltaics' started by Glenn jacobs, Jul 7, 2005.

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  1. Glenn jacobs

    Glenn jacobs Guest

    After four years of use I have developed significant corrosion on some of
    my battery cable connectors. These are the ordinary bolt on connections.
    I have cleaned them up, but I am curious if there are ways to limit this
    corrosion. I have a well vented battery room and I rinse the batteries
    off, any time that I add water to them. I typically add water more or less
    every six months. The batteries are Trojan L-16H¢s.

  2. Coat the bare metal of the connections with a light grease. I use
    vaseline (aka petroleum jelly). This prevents acid from depositing on
    the metal. Works great on car batts also.

    Some will say use oil. I find that does not seal well enough, must be
    reapplied too often, and tends to run and drop.

    Some will say use any grease (aka chassis lube or even bearing grease).
    I find the heavier greases too thick and hard to get a nice thin coat
    that is air tight. I end up with little pockets of corrosition in the
    nooks and crannies (eg deep in the threads under the grease because the
    grease didn't go all the way into the crevice).
    Sounds like you are doing a good job.

  3. Me

    Me Guest

    What you need to do is coat your connections with the electrical grease
    that is used to make High Power connections in the Power Distribution
    System World. Has Copper and Aluminum Powders distributed in a jelly
    like substance. when Pressed in a tightened connection causes a good
    low resitance path, and keeps the air away from the connection so there
    is less oxidation.

  4. John  P  Bengi

    John P Bengi Guest

    Batter manufacturers recommend vaseline. We use it at work on our banks. It
    protects the connections from acid fumes etc, but most of all it keeps the
    air out of the connection and prevents oxidizing due to fumes, acid,
    whatever. No oxygen, no oxidization. Easy to wipe off periodically too.

  5. Glenn jacobs

    Glenn jacobs Guest

    Thanks guys for the advise i will get either the electrical grease or
    vasoline. Of course i am a little worried what the druggest will say when
    a 70 year old man asks for a bunch of vasoline. :)

  6. m II

    m II Guest

    Heck..puff out your chest, smile, thump fist on counter top and DEMAND as much
    vaseline as you can carry out. No explanations required or needed. Leave them

  7. John Latelee

    John Latelee Guest

    Sat, 09 Jul 2005 04:40:06 GMT
    in MID:<[email protected]>
    heh,, another one is to ask " I want ALL the **Heavy Duty** tampons you have in
    .......and proceed to walk away with the cartons loaded on a trolley,
    That gets some heads turning!!
    IF you want to know what the "need" was I will tell you buuuut be warned ..its a
    long yarn although it is "technical" as in engineering and a real instance of
    workplace ingenuity<G>

  8. Ptaylor

    Ptaylor Guest

    Well,comeon,don't leave us hangin by a,ahem,string.
  9. John Latelee

    John Latelee Guest

    Fri, 08 Jul 2005 22:58:45 -0700
    in MID:<hIJze.103$>
    Scene: Motel complex in a remote (away from usual service area) regional area.
    in Western Northern Australia
    Problem : Central Plant A/C Breakdown - Mid Summer @ > 38Celcius Ambient

    Some years ago I had a crew doing an "on the fly" Refrig Compressor change out
    and Chiller Tube repair on the above plant.
    For those that do not know. The chilled water "cooling vessel" for these type
    A/C systems is a multi tube cylinder where the water flows around the
    refrigerant cooled inner tubes. Known as a "shell and tube chiller".

    This unit had suffered a "freezeup" in the past as the crew discovered on
    stripping down the unit for cleaning.
    [The residue from the burnt-out semi-hermetic compressor (this rack had some 12
    separate Carrier 6D series compressors) has to be removed and dehydrated
    integrity for the whole system reinstated after such repairs]
    The earlier freeze-up had caused a shifting of the plates,, that hold the tube
    bundle together along the whole chiller shell length,, making the traditional
    method of scrubbing out very difficult.
    Our company used extended 12guage shotgun brushes and saddle lint as an
    absorbent media for cleaning out,,after flushing the tubes with solvents and
    As the tubes were "bent in two arcs of plane" the guys were having hells own
    trouble getting the solids out of the tubes.
    Refrigerant circuits have to absolutely spotless.
    On a trip to inspect work the job was not getting done, with that difficulty
    creating some frustration and delays both at the workface and at operations
    level for both our Company and the Motel.
    I confirmed the degree of difficulty in doing the job the "standard" way and had
    a bit of a think about solutions.
    I had a thought to then go down to the local corner store and buy a packet of
    tampons. We then threaded pvc insulated multistrand copper cable (3/029/1.0mm
    building wire in Aussie) through a couple of tubes and tied a few tampons on.
    The sound those suckers made as they were drawn through I will never forget -
    sort of a cross between a fiddle and a bass trombone!
    Did it clean??? You betcha sweet bippy it worked!!
    As the tampon swelled the gunk got swept in front of them and left a pretty
    clean tube at one pass. In fact you had to be careful as too slow and the risk
    was there of getting a lodgment, never happened but it was apparent it could.
    We did two passes on a few tubes and declared the idea/process a success.
    There were over 300 5/8" 16mm tubes in this sucker ,,so back to the shop I went.
    The bloke behind the counter near on fell over when I bought all the 3 cartons
    he had ,,,shaking his head as I left to go down to the Chemist on the advice
    that was where he stocked from.
    I forget now many I bought there but the Chemist would not take a Company
    Check.. I had to pay cash from my own pocket and carry them all out to the car
    myself in a few trips!!
    He had some definite ideas about my character I would say <g>
    The end?
    I had to head back home so I didnt get to see the show. The crew had many a
    laugh retelling the story and mimicking the "music" they made. Of course in
    those days PC was not so rampant so the uses of tampons could be
    discussed and jokes made openly. I'll leave you to ponder on the connections
    that can be made between tampons, music , pull-throughs and pussies - the ones
    that are too high to eat grass,, not the four legged bird killing kind!!
    (apols to pjm-see my sig <g>)

    So if you want to try it.. get a length of 5/8 0r 3/4 hard drawn Cu tube and
    rinse it with a little water, vegetable oil, and maybe a drop of power
    kerosene(av-gas)/methyl benzene or some other light solvent. Run a tampon
    through it,, the speed at which the tampon travels determines the harmony and
    tone of the produced "music"...your own "string" orchestra!

    ba Boooomm!

  10. Ptaylor

    Ptaylor Guest

  11. Bill Darden

    Bill Darden Guest

    Hi Sylvan,

    "Vaseline" is good for stationary deep cycle battery connections, but
    due to it's low melting point, not recommended to be used on starting
    (car) or motive deep cycle batteries exposed to engine compartment

    Kindest regards,


  12. Rob

    Rob Guest


    Spray paint works, and dries!
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