Why even waste weight on battery at that point. That is a built in ups, not a portable device.

A built in UPS is really helpful for moving from room to room around a home or office.

For a long time I've wanted something with all the properties of a desktop PC, but the ability to move it to another room while booted and without having to do multiple journeys.

A serious enough setup I could use it for work every day, yet still with the ability to take it to the living room to do stuff while supervising the kids...

Put the whole thing on a platform with casters and bolt the case and a UPS to the thing. With a solid metal base, you could put on a shelf for mouse and keyboard and a stand for a monitor.

This seems like a pretty achievable project if you have access to a workshop.

You can buy such a thing off the shelf. They're called "Workstations on Wheels" or "WoWs" and they're everywhere in medical facilities.

For a device that may be deployed in or from a vehicle or locations which may or may not have 100% stable power, a built in UPS is great.

Also, that 'ups' allows one to move the device around - it is called out as a mobile SOC.

Seriously? 12 kilos? That's heavier than an Osborne 1 [0], and that was considered a luggable computer rather than a laptop per se.

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[0]: https://en.wikipedia.org/wiki/Osborne_1

The venerable Osborne 1! Now that's a trip down memory lane!

This is due to regulations regarding max Watt Hour ratings for lithium batteries on planes. However we are still working on this.

Battery regulations are the weirdest goddamn thing. TSA forced me to stow batteries in checked in luggage when I literally pointed to the regulation (I had a copy on my phone just in case this exact scenario happened) that I had to bring it on carry on. Nope didn't care, I guess the battery looked scary

I had to pay like 80 bucks to check a random bag with those batteries.

Agreed - I understand the reasoning but it is frustrating.

And with the "Out of band always visible battery gauge" you can literally watch the charge tick down by 1% every 20 seconds!

I expect it's not a big deal for actual usage, with my controls engineering workstation I typically only use my batteries to transfer from the dock in my office to the dock in the shop and vice versa, and to hold the laptop in suspend when I go to and from work.

> And it's not allowed on airplanes

Is the battery limit just for carry-on or for checked too? Could you just check this in?

The limit is much tighter for checked-in luggage. You are supposed to carry the batteries with you.

This is due to fire safety.

YUP. This is correct.