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Re: Reason for Optima failures?
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Posted by Jon Hagen on December 06, 2006 at 08:57:44 from (69.26.30.9):
In Reply to: Re: Reason for Optima failures? posted by IH2444 on December 06, 2006 at 08:19:05:
From my experience,they are not damaged by fast charging,as I stated I have jump started my pickup with dead Optima battery and allowed the full 60 amp output of the alternator to recharge it a half dozen or more times without apparent damage.
What will quickly destroy the Optima or any other AGM battery is continuing to charge them at a high rate AFTER the battery has reached full charge. This can be from a machine with a defective charging system that puts out more than 14.5 volts,or a high output,unregulated battery charger that does not automatically shut off when the battery reaches full charge. IE,an unregulated boost charger that continues to apply 20-60 amp charge even though the battery is fully charged,and the operator allows this to go on for hours. Under overcharge conditions the small amount of electrolyte liquid that is in the absorbant glass mat plate seperators is vented from the battery as a gas and can not be replaced. Without it,the battery is ruined.
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