Aura Battery drain is huge

Hi all,

My Kobo Aura's battery is draining enormously fast.

What i did to try to fix this issue:

- Reset to factory settings
- Soft reset
- a few different down and upgrades (software)
- New image (after i bricked it ;-)) thnx for the image and help! DNSB Bibliophagist

Now i even put in a brand new battery but stil the same result.

Its draining so fast u can almost count the % per min.

Anyone? Happy to hear.

Thanks in advance :)