Lumia 830 battery draining really fast

[Windows Central Question]

The battery of my Lumia 830 is draining fast. Normaly i'm pretty much a high demanding user (I use my phone all day), but to test the battery I used my phone 'normal'. The battery still drains fast as hell, unplugged at 0800 and the phone shut down at 19.00, less then 11 hours.

Useful to know:
W10m, .107 build. Did a hardreset a week ago (battery drain was the same before the hardreset), NFC off, location off, brightness set on auto, BT off, 4G with almost full bars, Wifi on. Nog many background apps, batterysaver kicks in at 15%. Glance screen turned off (in the hope for better batterylife).

A batteryapp says: 8.57% drainage per hour

Battery settings says:
68.6% screen
25.5% system
4.5% wifi
1.9% mobile data

79.7% in use / 20.3% in background

I'm out of options for this problem....

 

[Indistinguishable]

Keep in mind that you're running insider software. This is going to be a bit more battery intensive as it's a preview, and it's also reporting diagnostics to the developers.

I'd say try some of the battery saving tips from the below two sources. If battery issues are really bad, i'd recommend a hard reset. If a hard reset doesn't help, then maybe the insider preview isn't for you with your phone usage.

17 tips to extend battery life on Windows Phone 8 | Windows Central

Battery saving tips - Windows Help