Charge The Battery - Nokia Lumia 930 Quick Manual

Charge the battery

Plug a compatible charger into a wall outlet, and
connect the micro-USB end to your phone. You
can also charge your phone from a computer with
a USB cable.
If the battery is completely discharged, it may
need to charge for up to 20 minutes before you
can use your device. The charging indicator may
not be displayed in this time.