My Lumia 520 automatically switched off and died, how can I revive this?

[Windows Central Question]

Lumia 520 Automatically switched offf and dead

After successfully installation of Lumia Denim in my lumia 520 it was running smoothly but after 1 month , it was automatically dead. Now its vibrate only if i put in charge, totally black out.

 

[RumoredNow]

Re: Lumia 520 Automatically switched offf and dead

Updates are hard on battery. Your battery may just be run flat and that puts it into a coma.

Use the factory charger, stay plugged into the mains for a couple of hours and don't press any buttons. If it is a "sleeping" battery it takes some time for it to "see" the charge, but then it will boot and start charging normally from around 6%. Let it charge all the way to 100%

 

[sniperboywc]

If this happens often, you might buy a new battery. I had this problem with mine. I think it was caused by a bent battery connector. After I installed a new battery, the problem went away.