Xiaomi has published a teardown video of the Mi 10 Ultra, and boy is there a lot of copper. The battery in the Mi 10 Ultra should be simple to replace thanks to the inclusion of battery pull tabs, while the size of the device's periscope and 108 MP cameras are a sight to behold.
https://www.notebookcheck.net/Mi-10-Ultra-teardown-reveals-the-impressive-hardware-of-Xiaomi-s-latest-flagship-smartphone.487988.0.html