So, just did a play session with interesting results. I’ll start with a my baseline or control.

In an hour and a half play session of “Onward” (half of which was spent trying to figure out why my second player wasn’t able to connect to the same server) I went from 100% - 0% on the quest battery alone. Not great but ehh, it’s stock.

Now for my current setup, an Anker 334 10kmAh battery and the charging cable that came with the quest. After a solid hour and a half session, the quest was sitting at 98% with the battery pack between 75% - 50% according to how the manual explains on how to determine the remaining charge with the lights on the pack itself. That being said using some common core math I’m estimating the charge of the pack is approx. 63%. Which would leave me to assume with this setup I should get about 4 hours battery assisted leaving me 94ish% percent on the headset with a total of about 5-6 hours of play.

Side note - I took this picture shortly after removing the headset and I’m just now noticing it showing it’s fully charged again.