After nearly 5 years of service I broke my Mate 20 Pro .

I've used it for nearly 5 years without any problems and for about 3 years i used it with neither case or screen protector. But yesterday I cracked my back glass. There are replacements on aliexpress and I deeded to just replace it, but I also thought for a new battery. So can someone give some suggestions on what battery should I purchase. I think I'm capable of making the repair by myself.