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Naio's avatar
Naio
Explorer II
Jun 09, 2017

Got my new (used) batteries!! Now, how do I rejuvenate them?

After a YEAR of Murphy's-law delays (his health, my health, getting stranded on the way there, etc., etc.) I have finally got my hands on 4 Fiamm 132aH, Just like Mr Wizard's. I figure I should che...
Naio's avatar
Naio
Explorer II
Jun 21, 2017
Tell me if I did this right?

Got up today and this second battery was at 12.78. Fiddled it while watching for voltage un-sag, got it to 14.71v after an hour or so, but only taking about 1.25amps.

Figured ok clearly not full, so maybe it is desulfating. Left it going, amps increased to about 3, then decreased again. Took it off 3.5 hrs after stabilized, 4.5 hours after start.

It was still at 14.71 at the end (checked hourly), and back down to about 1.25amps. Terminals 80 degrees.

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