“Just to be perfectly clear: Does the device itself need to be connected to AC power from the wall with a wall wart? Is one included? If so, then I conclude the two AAA batteries are for the remote. Is this correct?”
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Yes the main device does need to be plugged into a power supply that is plugged into the wall that has a 5 foot cord included. The included batteries are for the remote only. The plug is a little large so if on a power strip you may need to skip the plug next to it. The main reason for this is to get unrestricted power that the back of your TV might or might not offer on a USB. Some TV's do not supply power to the USB outlets when the TV is off and the power output can also very so to make sure the unit is always powered they have you plug into a wall outlet so you can ask any Google Assistant device around the house to play something on the TV and it would Turn ON the TV and play. Here is how it works you say to a Google Hub or Google Assistant device "Hey Google play Fargo on Livingroom TV" Google will say back "Here's is Fargo on Netflix on Livingroom TV". What will happen is the TV will turn ON (because it gets info over the HDMI to not only turn the ON the TV if it is Off but also change to the correct HDMI input that the device it plugged into) and the show Fargo will start playing on Netflix Living room TV. I should say wile all this works great in some areas there a still a number of problems. If you want to watch the newer Fargo on Hulu, not the older Fargo on Netflix you would have to say "Hey Google play Fargo on Hulu on Livingroom TV". This should be the end of story but the new 2020 Google Chromecast with Google TV does not respond on Hulu to play but only brings up the show and you would then have to walk across the room pull out the remote select Play to play the show Fargo on Hulu. This is not true for the now discontinued Google Chromecast Ultra 4k, that device will play Fargo on Hulu all by voice, in part because that device did not come with a remote. But back to your point the older Chromecast Ultra 4k also is designed to be plugged into a wall outlet for the same reason, to work even if the TV is Off. Some of the dongles like Roku plug into the back of the TV but will not always turn the TV on if it has been off for a wile.
Sorry, there was a problem. Please try again later.Yes, it does. Chromecast with Google TV comes with a power adapter and cable in the box. The two AAA batteries are included for the remote.
Sorry, there was a problem. Please try again later.It includes a power adapter whose output is USB-A female 5V 1.5A and a USB-A to USB-C cable. I think it will work as long as 5V 1.5A can be provided to its USB-C port, even it's from mobile power bank. Most TVs provide up to 5V 0.9A which is not sufficient. Two AAA batteries are for remote.
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