Nexus 4 doesn't charge after battery dies
I ran my Nexus 4 battery completely flat and then when trying to charge with the USB cable out of my laptop I could not get it to charge. I tried several laptops or hubs and no luck. No battery icon on the charge screen, nothing, even if I left it in several hours. After a day of this I plugged it into the wall charger and boom it charged as normal.
So! If you are having problems charging from USB once your battery has gone flat make sure you have a wall plug adaptor. This is an absolute nightmare if travelling unfortunately as I usually don't bring a wall plug and usually do run it flat!