frank li wrote:By "off" i mean not charging, on full or other mode. You can press off, if it has an off. Not mppt off, control power forward, set to off. If it does not have the function you can wait till full. You will see pv voltage rise to voc because the controller disengaged the array input. If the array voltage is the same as battery voltage, the control is "off" or at least the array input portion is, in order to cut forward power to zero.
Im not having any useful knowledge of electronic architecture in there and this is based off of operation manuals and direct observation.