Hi friends,
I got to fix STIHL AL 300 battery charger, for mower machines, which works fine only when the battery is discharged ( haven't tried it already, since I got only fully charged battery, but that's why I have been told ). When the battery has some % of voltage, the charger doesn't work. In this case, the red LED starts to flash 10 times, and there is no voltage at the output. The customer tried more batteries, and it worked like this with all tried batteries ( so looks like not a battery related issue ).
I would try to discharge the battery ( with few 12V...
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