Battery Drains Quickly Even When Not In Use

[WPCentral Question]

I Have a lumia 520. My usage is light. I charge the battery fully to 100% before going to sleep and all background apps and wifi and mobile data are switched off. but by the time i wake up (about 8-9 hrs later) the battery level is down to around 60% without any usage. I have been struggling with this problem for months and even visited nokia care 6 times in between. They Changed the battery the first time,but to no use. Later a couple of times the phone worked fine for a couple of charge cycles before the problem cropped up again. what to do? please help
really feel like trashing my phone in the bin.

 

[ven07]

How long have you had the phone? Did you turn off all the background services? I'm assuming you don't have 8.1 or Cyan yet?

 

[meruputiiga]

I have had the phone for about 8 months. It worked ok for first 4 months before it started acting up. No,i dont have 8.1 Dp installed. I think the problem started a few days after black update.

 

[ven07]

I have had the phone for about 8 months. It worked ok for first 4 months before it started acting up. No,i dont have 8.1 Dp installed. I think the problem started a few days after black update.

Hmm it might be because of Black.. 8.1 will stabilize the battery

 

[ven07]

Try a battery app to see the drainage Also do you leave the wifi on when you sleep? try sleeping with flight mode on

 

[meruputiiga]

ok will try flight mode and see
thank you

 

[meruputiiga]

even flight mode isn;t working battery discharged by about 25%. I do not switch on the wifi when i sleep.

 

[ven07]

You could try 8.1?