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Old 09-12-2020, 12:14 PM   #9
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Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 6,800
Default Re: Optima battery will only chug to 50%

When I go to Florida for 6 months in the winter, I hook battery maintainers to all of my vehicles. I then run extension cords from each tender into a power strip plugged into a manual timer in the wall outlet. I have found that powering the maintainers on for just 15 minutes a day provides enough energy to keep them at full charge without risking overcharging the batteries. These timers are available just about any where and they are cheap insurance against overcharging.
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