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Why is my Lumia 1520 battery draining fast after the Windows 10 upgrade?

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Windows Central Question

Lumia 1520 Battery draining fast after Windows 10 upgrade

Folks. i just updated my Lumia 1520 from WP 8.1 to Windows 10. My battery has been draining at a fast pace close to 10% for every 20 minutes. I have the latet windows build 10586 on my phone now. Is there any thing that could be done to solve tis issue. My battery back was just awesome under WP8.1.


New member
Jan 12, 2013
Re: Lumia 1520 Battery draining fast after Windows 10 upgrade

Is your phone still in the phase of updating the apps? If yes, than of course it will be draining your battery - just wait for all your apps to be updated.

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New member
Jul 30, 2014
I experienced the same issue too! Battery dropped from 100% to 70% in just 20 minutes of normal usage, SMS, without updating applications in the background. Re-installed 8.1 and my battery life is back to perfect.


New member
Jan 29, 2016
I have the exact same problem, the only difference is that I already had W10 on my phone, and I had updates, many restarting of the phone, and from now on, I loose 100% charge in 7 hours...(at night without doing nothing) and yes, it's a lumia 735 ;-)