Lumia 950 xl battery

[Windows Central Question]

I am too tired of Lumia problems, I bought two days ago new Lumia 950XL, battery is twice worse then Lumia 930, but the same as Lumia 920. So now I have 3 phones, Lumia 920 ( bad battery), lumia 930 (sensor problems), Lumia 950xl ( bad battery). Lumia 950xl will be my lastest phone from microsoft. Why I must allways be desappointed when I bought phone, always search how fix the problem? Am I phone repairer? No! So nex I will to choose, Samsung, I-phone or some phone fom China.
May be some one knows how fix battery issue?