I assume this would work...
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Adding a zigbee radio should not be much of an issue. The TI2530 makes it very easy and the firmware can be had from/with PTVO. AND the cc2530 acts as a repeater.
I have 3 already deployed in my Hubitat network
I could help if you wish.
John
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for a 2.0 version if possible in order of priority would be
- New case that is the same footprint of the hub. so they can be mounted together easily as @njanda said
- Zigbee Radio that can tell the Hub a few stats about what is happening.
a. Charging, Passthrough, on Backup
b. Battery Voltage when being consumed. Idea being so Hubitat can determine if battery is getting low and shut itself down - Ability to see no usage on battery and then shut down the USB port. Then power the port back on a set time after power is restored.
- Maybe Multiple USB Ports so either more then 1 hub, or other DC powered devices can be kept up. I would love to use it to power like a router (Goggle Wifi) and a small network switch as well. but then it may need to have some way to adjust voltages to each port hum..
a. if this is done it may be a good idea to enable higher in USB-PD profiles like 12v 3am to provide more power to support additional devices. I don't know if the battery controller can even support it.
b. This would probably really need at least a 4 battery setup as well.
@dJOS don't take that to seriously though i am just spit balling. The fact you took the time to make these already is freaking amazing.
The most important thing though is to keep this reasonably priced. I can see the items above driving the price up a bit. I really can't wait to get my hands on it but it needs to travel across the US to get to me 
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No, the most important thing is a version without a case.
Because then well, all you'd need is your very own printer.
I've heard the Sovol SV05 is nice. 
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You need to incorporate this into your PBC design, 
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Yes, it can supply 12 watts on 5v from the USB A port.
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I’ll take you up on that offer when I get back to the project. 
Some great ideas there. Items 3 and 4 would make this quite expensive as I’d need to add a microcontroller (for 3 at least). The other items are definitely doable, I think.
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Speaking of projects, I finally got around to building my Xmas present from the wife yesterday. Took me about 4 hours.
Now I just need to learn how to use it.
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Sweet! Another inspiration to build an Altair 8800 raspberry pi replica someday!
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Brings back old memories. Where I worked (some time ago) we had a Data General mini. I needed to flip a couple of these switches to get it to boot into a DOS residing on a 160k 8" floppy disk.
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Nice! I almost bought a Data General Mini Computer at auction in the early 90’s. It went for $50 but I had nowhere to put it and no way to get it home.
I got the IMSAI 8080 replica because it was in one of my favourite movies of all time, war games. It just kills so cool!
Awww...how thoughtful of her to know exactly what you wanted.
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UPS are IN THE HOUSE! Nice job, @dJOS - they look even cooler in person than in pics.
A question (of course) - I put batteries in them and one is reporting a fault, while the other isn't reporting anything. Which one of them is right?
Anything I need to do to clear the light?
I don't appear to have a suitable charger in the house, tried a few that I thought might work but didn't get any response from the UPS (charging light didn't come on) so not sure if that would do it.
One of my faves...just so well done.
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I know right!
Hmm, try switching the batteries - you might have a dud battery. I assume you installed the batteries in parallel?
Btw, did you match the Input with the lid? Power can only go in one side - It wont damage it, but it'll prolly show a fault.
A power supply.
if the batteries are already at 80%, the charging light wont come on - try plugging something into the output and see if it powers it.
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Thanks, out for a quick dinner right now I'll check those things when I get back.
Chile Relleno, baby!
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That didn't change anything - one unit is no lights, second is still power failure light on. Made sure that the batteries are in parallel, moved them back and forth between units and things stayed the same.
I plugged my phone (Galaxy S21) into them:
- Unit w/Power Failure - a warning appears on the phone that the device can't charge the phone
- Unit w/no lights - nothing happens on the phone, no charging, no warning
I'll dig up or purchase a charger that works w/these so I can ensure they have a full charge and go from there. 
Which batteries did you end up buying?
I tested all the units with unprotected, 1600mAh LFP / LifeP04 18650's, and they all charged batteries and all powered my WOPR Clock with power removed.
I do wonder if some of the batteries you guy's found in Murica are a little on the cheap side?
Under $10 USD for some of them seems a little too good - The batteries I bought were $22 AUD / $15 USD each.
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