Straight from my bookmarks:
https://www.instagram.com/p/CcSnQZ4vqnl/
Canon R5C USB PD External Power - Power for 8k60 using USB PD- Record times on the Anker Power Bank | Anker USB Power Bank | FXLion Nano 2 Power bank + other adapters on the description
https://www.bhphotovideo.com/c/product/1596728-REG/anton_bauer_8075_0271_p_tap_to_canon_9v.html
https://www.usa.canon.com/shop/cameras/camera-accessories
Canon R5C - Compact Rig & Battery Solutions