Yep, many folks won’t have their wifi on ups, or if they do, the runtime of the Hubitat hub is many many hours longer than most ppl’s comms gear.
Zigbee provides direct integration with the hub and doesn’t need your wifi network to be online for it to provide the status info.
I wonder if you guys could get the Zigbee equivalent of Z-Wave direct associations involved? Z-Wave allows simple on/off and dimming commands between devices without any hub involvement at all. So, your UPS could send a command to, say, the zigbee equivalent of a Zooz ZEN17, powered by the UPS, to start up or shut down the hub, even with the hub off line.
For anyone who wants a prebuilt UPS, konnected sells one today.
Alternatives welcome. Note option 1 is the "Normal" operation for any UPS.
yes need a way to reliably report when the battery level is low and when it switches to battery vs power..
Ideally I agree. The issue is the cost of the required Z-Wave or zigbee radio for such a low production volume.
All my UPS's have a USB interface with monitoring software that keeps track of battery level and state (battery or mains) when it's almost depleted and depending on the settings I have, the PC will shut down all applications and shut down so I don't lose anything, of course I need to have auto save enabled on all running software. So this is what I would call normal operation when setup correctly. But of course if your UPS is only for network stuff or other, yes it can't be warned to shut down before.
Having it as an option (pads ready to solder the Zigbee add on board), this would be a nice compromise.
I agree all "large" UPS will have some output readable by a PC of some sort, however I've not seen any of the "baby" UPS's to have such capability. Look at the one @altuser99 linked to.
I'm helping @dJOS here but personally I'm not clear how to make something that one would want above the Konneted one.
Personally I think the TLC4020 design has the edge of lower charge voltage = longer battery life. And the batteries are easily replaceable, but I have no data to back that up.
As for the possibility of adding pads for the zigbee radio. A board from eBay would still need to be programmed. And while there are many folks on this forum capable of doing so, there are also many who do not.
We do however, appreciate all the comments both positive and negative.
at a minimum it could have a 2 wire output that shows on/off for whether on battery or off battery. at lease this way you could put something like a ecolink contact sensor to sense when it goes to battery and if still on battery say xxx minutes later in a rule shutdown the hub to avoid corruption.
you obviously would have to time how long your battery lasts when off power to adjust your rule and put in some latency.. However, if too costly to put in a smart device this would at least be something.
If you have any form of LEDs showing sequencial depletion (4 LEDs is 100%, 3 = 75%, 2 = 50%, and 1 = 25 or less but "I'm not dead yet...") then maybe you could leave extra headers or pins for those LEDs. (1 per and then ground of course). Then someone could just connect wires to whichever one they want to monitor with a contact or other method.
Should not cost too much to have some extra headers, although board space might be annoying. While not "smart" it would give those interested a DIY connection to add their own monitoring, whatever that might be.
As for adding ZigBee later... Yes, that is not very accessible to most users but some users may fill the gap for relatively low margin. As an example: I thought I remember someone who was willing to modify C-7 hubs to add external antenna.
EDIT:
Related to the Konnected UPS... I have a few Belkin BU3DC001 12v UPS around (or older variants). They were meant for phone system backups. Pretty standard 2.5mm barrel plug on them. I use them for my fiber ONT and for a water filter (that I have never actually plumbed into my house lines due to other issues). Used to have a couple power other stuff like my previous router and APs for example.
I really like the idea of adding Zigbee to this to monitor the battery level so it can be safely shut down when getting too low and on battery power.
My hubs are in a very visible spot, so for me having it integrated within the unit and not having to figure out how to integrate it would be a definite plus. 
Crossed comments -
I was shuddering at the accident with ...
Same. Since finding the $4.50 USD Zigbee modules on Aliexpress, I think this is going to be the best option. This one below is imo perfect as it has an integrated RF can and castellated solder points.
Very nice! That wouldn’t add much to the total BOM cost.
Agreed, we need a microcontroller anyway, so might as well spend the extra $2-$3 on this Zigbee module.
It’s been mentioned plenty of times.
As a side note, I ran my C7 hub 5 days last week on a TalentCell battery. It just ran my wifi router 16 hours. Of course, there are no smarts.
This is going to be one crazy UPS. 
Download the Hubitat app
