It apparently used to say it on Valve’s official FAQ for the steam deck, but it’s since been rewritten to only mention the bios method. I found a 4 year old reddit post where they directly quoted the older version of the page.
I also confirmed on my Steam Deck that it works, I was able to get the double blue led flash (which confirms you’ve entered battery storage mode on the OLED) by plugging the deck in, turning it off, holding vol+ and QAM for 10 seconds, and then unplugging the Deck (while still holding the buttons)
It apparently used to say it on Valve’s official FAQ for the steam deck, but it’s since been rewritten to only mention the bios method. I found a 4 year old reddit post where they directly quoted the older version of the page.
I also confirmed on my Steam Deck that it works, I was able to get the double blue led flash (which confirms you’ve entered battery storage mode on the OLED) by plugging the deck in, turning it off, holding vol+ and QAM for 10 seconds, and then unplugging the Deck (while still holding the buttons)