[AT] AT -Battery desulfator

[Jason]

The quickest way to test for a bad cell is with a very hydrometer.  If
they're all the same reading, charge and retest. But if all except one read
good then you have a bad cell

Jason

On Sun, Mar 10, 2019, 1:36 PM James Peck <jamesgpeck at hotmail.com> wrote:

> I am interested in how you go about testing batteries for shorted cells.
>
>
> https://batteryuniversity.com/learn/article/difficulties_with_testing_batteries
>
> [Spencer Yost] Schumacher makes a desulfanator/charger that has saved
> several batteries. It actually was a gift to my son about 20 years ago (I
> love giving gifts that I can borrow :-) ). But when he moved to Raleigh it
> went with him so I don’t have it nearby to look at model numbers or
> anything.  I remember the price being on the high-end of the Schumacher
> line. A quick search of current models does not turn up anything that is
> exactly like the one I bought.
>
>
> [Richard Walker] I have half a dozen old 12V vehicle batteries that check
> out good for not having any shorted cells, but fail a load test right after
> charging.  And I use a 50-year-old Schumacher charger that will charge
> completely dead batteries, unlike the modern electronic "smart" chargers
> that won't turn on if hooked to a totally discharged battery.   My results
> with cheap "desulfators" have been mostly unsuccessful. From their personal
> experience, does anybody have a make and model recommendation for a good
> battery desulfator?  Not necessarily a maintainer, but something more
> robust that will revive a battery in bad shape in a few days or a week.
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