The Battery is on the right side where the charging port is.

The Earpads are held in place by 6 notches. You need to get next to them under the plastic ring that goes around the pad. Best would be with a plastic spudger but you could do it with anything flat and thin. Once you have popped one notch you can probably pull the whole thing off. If not just pop the rest with the same method.

Be sure to remember which way the earpad was in, as they only fit in one direction.

Now you need to get behind the inserted foam to the marked 4 screws(orange). You can remove the foam entirely like me. Its held on with a few small dots of glue. Or you can probably also just lift the foam and get to the screws that way