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tubman · 09-12-2020, 09:16 AM

I am assuming you mean "bring it to full charge".

How are you measuring the batteries state of charge? Since it's an Optima, you can't stick a hygrometer in it. Are you measuring the voltage with a good meter, or just relying on the meter on the charger? Does the battery function well? Maybe there is no problem if it does what it should. I am on my third Optima, and they all went well over 10 years, so yours should still be good.

09-12-2020, 09:16 AM	#2
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 10,319	Re: Optima battery will only chug to 50% I am assuming you mean "bring it to full charge". How are you measuring the batteries state of charge? Since it's an Optima, you can't stick a hygrometer in it. Are you measuring the voltage with a good meter, or just relying on the meter on the charger? Does the battery function well? Maybe there is no problem if it does what it should. I am on my third Optima, and they all went well over 10 years, so yours should still be good.