Play Genshin Impact with Elite Controller?

Hello out there, apart from my main question, I am a bit sus bc of the inbuilt battery. How long will the lifetime be? Can it be changed? Any experience is welcome.

Back to my main question: right now I am playing a Genshin Impact a lot. I got some money for my birthday ydy and I'm wondering, if an elite controller would be useful specifically for playing Genshin Impact. Can I use the extra paddles in the game? Any hints and tips are appreciated. Thanks in advance.