I have zero problems running my Mojo as desktop dac with a Anker Powerport5 powering it. With the Apple universal charger, sometimes it doesn't charge until you unplug the cable and plug it back in again. I had my Mojo ran dry with charge lead in due to that. Most likely the charger's issue but you can work around it by checking if the charge light is on white whenever you power it on. If the light is not white, you can always unplug it and plug it in again. Or in my case, using a different charger.