It could be so easy. A PSU with a built in battery and support in bios for save to disk standby if the power is cut. Work would be saved, and everyone would be happy. Didn’t have to be a large battery, just so it can power the computer for 10-15 seconds. Even better if the battery was a slide in so you could change it when it was going old.
Anyone know someone at Corsair? 
And it should have diesel generator as a backup in case Windows decides to run the updates
Well there are enterprise SSDs with backup batteries to complete writes in the even of a catastrophic loss of power.
To get a PSU that also contains a UPS you’d need to use LiPo cells or even LiFepO to get the energy density high enough to match the PSU maximum rated output. But those batteries don’t take too kindly being plugged in 99% of the time, so there’s another issue right there. Feels like a cool concept, but unreacheable with the current available battery technology.
I can only picture a PSU the size of a 1600W regular power supply that is 1/3 made of an SFF 450W power supply and everything else is batteries.
Or, something like EMC 078-000-050… 
If someone has fantasies and free 5.25 bay and excess $ then I would choose these ups above. Of course the pc can’t be an electric beast.
I imagine this going like:
Looking at the price(s) and the ease of use of these products I can only wonder why it hasn’t caught on (e.g. compared to a standard 1500VA UPS unit).
That’s a really cool idea, unfortunately I just ran out of 5.25 expansions But both seems to follow my idea of a smaller UPS. Don’t have to be able to run the computer for 10 minutes if it’s just gonna do a clean standby/shutdown.
When it comes to 5.25 bay, it is also possible to connect a monitor, provided, of course, that the whole set will fit in the power ups parameters.
Very unusual, expensive, with a small capacity, but for some very unique applications, it is useful because they still sell, rather by quantity than individual pieces.
You can buy an external 5.25 bay and put it next to the pc. Buy one and let us know how it works.
Or let @wendell make a short video about it, such a strange little tech curiosity that nobody needs.
what kind of load/use?
few options…
DC-DC ATX PSUs
Pico-PSU with a battery and charger
there are some other 12v/48v psu’s around as well you could do similar with
you could also get a NUC that uses a DC input
buy a laptop!
get a Tesla or other home battery
just buy a standard 1000va UPS plug it in and remember to replace the battery every couple of years!
And I am making plans to get some home batteries plus a generator. The batteries I am looking at are lifepo4, eve 280ah. There will be 16 of them in a string plus a bms(14kw+). I will use them with a 8kw hybrid on grid off grid inverter which can turn on my 8kw generator.
This way when we get blackouts, which happens several times a year for several days, we won’t be completely without power.
Btw the 14kw battery pack plus inverter will cost $3,500 I saw a quote on a Tesla powerwall to supply equivalent services at $54,000. The general generator is 2k.
A couple of years ago we were without power for 2.5 weeks. Putting the load through the battery pack instead of straight from the generator gives us a better switch time of 20ms, and reduces the run time of the generator.
This will likely be easier when/if 12V only PSU and MBs get popular.
12v only MBs usually need 12v regulated.
You can get automotive atx power supplies that run off of 12v unregulated, ie 10v to 16v.
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