That’s disheartening about the battery times.

So with all that said, if it takes around 1-2 hours for it to die after starting from full, and it takes a minimum of 2.4 hours just to get it almost full… that means it’ll still run out of battery eventually, even if plugged in.

Once again, battery charge speed is slower than what the charger can provide. Look at it this way, it has a 21.6 Wh battery. If that battery drains in 1.5 hours, that means it drains the battery at an average rate of 14.4 W. It charges at a max of 45w. So when plugged in you can fully power the Steam frame for about 14.4w, and still have about 30w of power left over to charge the battery. It won’t always use 30w to charge the battery, it will further reduce that amount based on heat and charge level, but it won’t ever have a problem maintaining the 14.4w needed to keep it powered up while plugged in.