It has happened a few more times, but solar charging and the method above seems to revive it. I had charged it up to 77% and it fully discharged at one point. When I revived it again, it immediately went to 77% and charged up from there (really only taking 23% charge and showing 100%) It crashed again when it went down to 77%. Did the solar only 12v charging and it appears to be working a bit better now. The trick is to not let it fully discharge, but I think with the bluetooth and other bells and whistles on this unit, it seems to have less standby.