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Old 09-13-2020, 02:35 PM   #11
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Join Date: Jul 2014
Location: Iowa
Posts: 1,474
Default Re: Optima battery will only chug to 50%

Glass mat batteries such as Optima are tricky to charge. Some chargers have a separate adjustment or that purpose. Charging at a too high rate can do damage to the battery. You may find the instructions by Googling "Optima"..
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