Works great. I used it to charge a car battery that worked as a doorbell for months. It took several days to charge, but the counter never exceeded 75%. When I checked the battery with a voltmeter, it was 13.8 volts. B stopped charging because he didn't want the battery to explode. This dead battery is now working properly. Battery voltage should be checked with a voltmeter every few hours while charging. I charged 2 starter batteries in a few hours each. You are well loaded. Another would not press charges. This unit restored the battery, allowing it to work with the radio electronics for at least a few hours. At some point I have to change the battery.
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