For gear with DC power input, these are good.  You do need one per device:

https://cdlnz.com/PSDCMIN1218

maffey:

 

For gear with DC power input, these are good.  You do need one per device:

 

https://cdlnz.com/PSDCMIN1218

 

Yeah they look interesting to get through small outages. It's a shame there isn't a good quality option that takes a 12V battery and provides USB and ideally 12V, or even just provide battery backed up USB. There are options that do that like the Talentcell, but reports on quality aren't great. For example that Talentcell isn't very good at actually putting 12V.

I'll just get a standard UPS I think. At least then I know the quality is decent, and it'll run the Pi for ages. I can also run the ONT and router from it if I want to, but the runtime won't be all that long. It'd be nice if there was a way to use external 12V batteries with a UPS, I have a few of them around.

Any thoughts on the Eaton 3S? Looks good as it has USB ports and the form factor would work for me.

Couple of questions:

• It has USB outlets, does anyone know if they work when mains power is out? The specs don't say, and the Gen AIs disagree
• Does it support the Eaton software that lets me disable audio alerts / beeping during outages?

I asked Eaton the questions, their support was SUPER helpful - other than the first person who replied being incorrect.

• The Eaton 3S has USB outlets that are powered from mains or battery
• The Eaton software lets you disable the audio alerts on the 3S
• It's an offline UPS, which just means the power isn't conditioned all the time. It's main supply, but if the mains goes out it powers from the battery within 10ms

The reviews say the plugs aren't arranged well, but that isn't important to me. I'll possibly only use the USB ports, but I may plug something else in at some point.

Are the USB ports outputting enough juice? Would be rather cool to have Power Delivery USB-C ports built in, but I can't imagine that happening any time soon.

From memory the specs say 5V 2A, which is plenty for a R.Pi4 running without peripherals plugged in. I'll order one of these in the next week or so, I'll update once I see how well it works.

I wouldnt like the orientation of the sockets on that UPS myself. And many comments back up my concern where any "bricks" just get in the way. And even block the USB and other sockets. If thats not a concern then it seems fine.

nzkc:

 

I wouldnt like the orientation of the sockets on that UPS myself. And many comments back up my concern where any "bricks" just get in the way. And even block the USB and other sockets. If thats not a concern then it seems fine.

 

I'll probably only use the USB plugs, but if I plug anything else in it will only be one or two things and it'll work fine. I can always buy some super short extension cords or use a multibox as well.

timmmay:

 

nzkc:

 

I wouldnt like the orientation of the sockets on that UPS myself. And many comments back up my concern where any "bricks" just get in the way. And even block the USB and other sockets. If thats not a concern then it seems fine.

 

 

I'll probably only use the USB plugs, but if I plug anything else in it will only be one or two things and it'll work fine. I can always buy some super short extension cords or use a multibox as well.

 

Nice thing. Now if only the battery was replaceable.

Tinkerisk:

 

Nice thing. Now if only the battery was replaceable.

 

From Perplexity, confirmed by the Eaton data sheet.

Is the Eaton 3S Battery Replaceable?
Yes, the battery in the Eaton 3S series UPS is user-replaceable. The official technical documentation and multiple sources confirm that the Eaton 3S uses a sealed, maintenance-free lead-acid battery, which is designed to be replaced by the user when necessary

timmmay:

 

Tinkerisk:

 

Nice thing. Now if only the battery was replaceable.

 

 

From Perplexity, confirmed by the Eaton data sheet.

 

Is the Eaton 3S Battery Replaceable?
Yes, the battery in the Eaton 3S series UPS is user-replaceable. The official technical documentation and multiple sources confirm that the Eaton 3S uses a sealed, maintenance-free lead-acid battery, which is designed to be replaced by the user when necessary

 

I wasn't precise enough. I meant whether you can buy them as a user or at a high price, like other proprietary batteries from EATON.

Tinkerisk:

 

I wasn't precise enough. I meant whether you can buy them as a user or at a high price, like other proprietary batteries from EATON.

 

A quick search suggests it's this battery, about $62. I would want to validate that before I purchased one though, it was a quick search.

timmmay:

 

Tinkerisk:

 

I wasn't precise enough. I meant whether you can buy them as a user or at a high price, like other proprietary batteries from EATON.

 

 

A quick search suggests it's this battery, about $62. I would want to validate that before I purchased one though, it was a quick search.

 

If this is the case, it is the same as the type used in the ELLIPSE ECO series EL800 and EL1600.

I got the Eaton 3S 850 mains UPS. I can confirm the audio alerts can be turned off, it's very quiet when running on mains, and has a mild buzzing when running from battery but that noise is mostly attenuated by closing the thin cupboard door. It might audiable at night in a quiet room, but that's ok. The USB ports work when running off battery, and so far the Pi works fine running from the UPS USB port.

At some point I'll have the Raspberry pi shut down based on messages from the UPS, when I get around to it. First test tomorrow when we're having an import / export meter fitted. I'll report back if I find anything interesting in future.

Just found this thread while searching for a backup-power solution for our modem and ONT. I already have two UPS's for our computers and monitors, which allow a 10\15 mins grace period to shut them down following a power outage, but if we could power our modem\ONT (in another room) for a longer period we'd be able to use our laptops to stay online.

I note Timmmay's suggestion abut the Eaton 3S 850 mains UPS  which PBTech are offering at around $190, but I'm wondering if this cheaper Eaton alternative might have more longevity than the 3S 850. As I said, I only want to power the Chorus ONT and an old Spark TG582n modem. There are two here at Computer Dynamics:

Comments would be appreciated.