nuckolls.bob(at)aeroelect
Guest
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 Posted: Wed Aug 24, 2011 5:46 am Post subject: Battery terminal corrosion |
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At 08:28 PM 8/23/2011, you wrote:
| Quote: | Evenin’ Bob –
What causes the terminal posts on a battery to corrode, and is there any way to stop / prevent it?
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It's difficult to get a liquid tight seal
between a battery post and the case material
on the older style, top-post batteries. Side
post batteries seem to be much better but
I don't understand why. I;m sure it's a design
issue. There have been remedies to the effects
of this leakage but no way to stop it. Here's a
bit I gleaned from the 'net . . .
To prevent corrosion of cables on top post batteries use a small bead of silicone sealer at the base of the post and place a felt battery washer over it. Coat the washer with high temperature grease or petroleum jelly (Vaseline), then place cable on the post and tighten. Coat the exposed cable end with the grease. Most folks don't know that just the gases from the battery condensing on metal parts cause most corrosion.
[img]cid:7.1.0.9.0.20110824084117.01dcbca0(at)aeroelectric.com.0[/img]
Automotive parts stores offer these treated
felt washers you can place under a terminal
on a top-post battery that contains
an alkaline agent which will tend to hold
off corrosion. But they will get 'used
up' and need to be replaced periodically.
Periodic baking soda wash, wire brush
brightening and re-assembly followed by
coating of grease is probably the easiest
but time consuming prophylactic.
If you're getting corrosion on a modern,
SLVA battery, it's probably suffering from
design flaws of some kind. 'Sealed' means
SEALED.
Bob . . .
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