Battery partial defect

The battery caused quite a lot of mistakes. To name a few:
- Flickering of the display
- Tab colors
- Different conversation volumes for calls / video, etc.
- Disconnections
- Crashes
- Faulty capacity Ads
- Among other things,

Having testweise changed back to the old battery, works for a few hours (for the time being everything) again. As a faulty battery can cause consequential damages, I find the product extremely negative and can not recommend buying. Any damage to the phone I will be replaced by a test phase.
I recommend a better quality and thus customer satisfaction.
To Reklamationsabwicklung I will later give a review.