Why is my Windows 10 Mobile draining the battery on my Lumia 640?

[Windows Central Question]

Windows 10 Mobile Draining Battery on Lumia640

My lumia640 is draining the battery 5 times the usual compared to windows 8.
The battery sense indicated: that it was the display that's draining the battery 80% of the time. This is nonsense because the display is turned off all the time or darkened the whole time since i notice it. Please address this ASAP anyone..??? ? Microsoft?

 

[Maurizio Troso]

Re: Windows 10 Mobile Draining Battery on Lumia640

My lumia640 is draining the battery 5 times the usual compared to windows 8.
The battery sense indicated: that it was the display that's draining the battery 80% of the time. This is nonsense because the display is turned off all the time or darkened the whole time since i notice it. Please address this ASAP anyone..??? ? Microsoft?

Windows 10 Mobile - Windows Central Forums

You'll find a lot of answers. First of all, there's one or two apps draining

 

[gpobernardo]

Re: Windows 10 Mobile Draining Battery on Lumia640

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[Chintan Gohel]

Re: Windows 10 Mobile Draining Battery on Lumia640

My lumia640 is draining the battery 5 times the usual compared to windows 8.
The battery sense indicated: that it was the display that's draining the battery 80% of the time. This is nonsense because the display is turned off all the time or darkened the whole time since i notice it. Please address this ASAP anyone..??? ? Microsoft?

A few things you can try out:

1. Check settings >system > battery > which apps are using the most energy?
2. Again, in battery section, which apps can run in the background? Can you disable those you don't need? Keep messaging enabled to run in background
3. In battery section, you can also set up battery saver to kick in when the battery reaches a certain percentage. I keep mine on 100% so it's always on battery saver mode
4. In mail app, how often do you have mails to sync? Generally the longer the time period, the less the battery usage
5. What about brightness settings? Is it on high or auto? Auto is better than a fixed setting
6. If you find that messaging app uses a lot of battery, this could be because it's linked with skype. Go to messaging app, settings and unlink skype
7. In photos app, do you have auto upload of photos enabled? If yes, try to not upload high res photos and videos unless you are charging the phone and on wifi
8. When you use some apps that are not data heavy like whatsapp or mail, you can use a lower network speed like 2G. It's what I do usually. I only use LTE when I have to use 6tag
9. If you're using edge for basic browsing, you could try using UC browser. Not only does it use less data but you can also disable images which means you save even more on data. The less data your phone has to receive, the less the energy used
10. In settings > privacy - check each of those settings to see which apps can use what. For example I can't understand why Word would need to access location info so I disabled that. There might be apps using services that they are not meant to use
11. Finally, keep wifi/cellular off when you don't need to have them on. The toggles in action centre are pretty fast so it doesn't take much time in switching internet on/off
12. Disable auto update of apps, you only update when you are ready and not when you are in need of critical things

Hope this helps you