Robert wrote:
Anyone know why Gel Cell batteries go HI-Z if discharged below a
certain level?
Also is there a way to rejuvenate a "dead" one?
As others have explained, the problem is sulfation. I have had good
results de-sulfating lead-acid batteries of all types (flooded, gel,
AGM) with "BatteryMINDer" brand chargers/desulfators. With badly
sulfated batteries, rejuvination can take a long time. Often, they
return to a good approximation of "like new" performance. Sometimes
they improve but don't return to "like new."
<http://www.batteryminders.com/batteryminder-model-1500-12volt-1-5-amp-maintenance-charger-desulfator/>
Best regards,
Charles
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