[Windows Central Question]

My Nokia 930 refuses to charge at times even when the battery is at 80-90%. The battery will continue to drain until the phone goes dead. I keep it plugged into the charger and the windows icon flashes but the phone won't start. This can last for 1-2 days.

[RumoredNow]

Inspect the port for debris or lint and make sure it is clear. Try a new USB cable and/or charger.

You might also want to do a Soft Reset (you don't loose any data). Hold the Volume Down + Power buttons until the phone vibrates (about 10 seconds) then release the buttons.

It may be a bad port or a bent pin inside the port... In which case you need qualified repair.