Battery replacement guide please

Ask and ye shall receive.

Manuales / Asus Zenfone 8 / Batería - Nadie Me Llama Gallina

The site is originally in Spanish, but if you use it with something like the Chrome browser that has language translation built in, it is quite usable and well written.

As you work, take lots of pictures and once you're done you can use them to create your very own iFixit guide to that repair. It's easy, fun and the repair community will appreciate it.

Unfortunately, the Nadie Me Llama Gallina site appears to have been taken over and taken down, so the previous link to their repair guide is no longer usable.