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Epsom salt in lead-acid battery

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Rick Law:
Some web articles and youtube videos suggest reviving a lead-acid battery by adding a solution of Epsom salt in distilled water.  Some even suggest draining the old acid and refilling with Epsom salt in distilled water solution.

Web being what it is, anyone can claim to be an expert.  It doesn't seem right to me, but I am not an expert.  So, I turn to the expert here...

Anyone here ever tried that?  What are your results?

EDIT - corrected - Epsom salt, not Epson salt...

BravoV:
You mean Epsom right ? Not Epson.

Rick Law:

--- Quote from: BravoV on December 16, 2020, 04:20:48 pm ---You mean Epsom right ? Not Epson.

--- End quote ---

You are right, I corrected the post!

jogri:
Doesn't strike me as a valid tactic,

since when does the addition of a sulfate to a battery that already has a way too high sulfate concentration lower that concentration? If anything, it prevents lead sulfate from dissolving, making the problem worse. Give it a shot if you have nothing to lose (the battery is dead anyway), but don't get your hopes up.

james_s:
I saw a youtube video a while back where a guy tried that on a few different old batteries and it didn't help.

The few times I've dissected a worn out lead acid battery it was obvious that there was no saving it. The plates weren't sheets of lead, they were more like sheets of corrosion that crumbled to bits.

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