Improved Wiring
I figured out how to power PiGlass v2 and the vufine for many hours with a single port 5v 2a USB battery pack. It involves connecting the micro USB port on the pi zero 2 to the micro USB port on the vufine with one of these, it follows the same path as the HDMI cable. Previously I was using a 2 port battery pack and 2 cables. The cable for the vufine tended to get caught on things, this new cable fixes that problem.
https://www.adafruit.com/product/3610