I was away for several weeks and charged zendure to 97 percent. I wanted to discharge it to 20 percent and charge back up to 80 percent. Last night I put my chest freezer on it. I woke up to the zendure (4600)totally discharged but the graph shows it put out less then 200w for two periods last night. Thank God I didn't lose the contents of the chest freezer. Why would it do this?
