I’ve got a TS-664 with 5 of the 6 bays filled. I’m looking into adding some sort of UPS so I can prevent damage from blackouts.
Currently there’s a good deal on a ‘EcoFlow DELTA 3 Plus Powerstation’ but after some research I found that the DC → AC converter pulls 30W power even if there’s no load on it.
You can turn off the AC → DC converter which lowers the power usage considerably, so I was wondering if I can run my NAS off of USB-C DC power.
I measured power usage of my NAS which hovers around the 45-50W which the UPS being able to provide 140W DC power via USB-C.
Is it possible to run off of USB-C? Does anybody have experience with this?
Now the problem with AliExpress/Amazon.
You need to find a cable or build a cable that will actually pass 60/80/100w without starting a fire. None of this $5 made of copper plated aluminium bullshit.
But yeah, if the EcoFlow will spit out 12v easy you only need to get it into the back of the NAS safely. Ask them or google if the 12v is also 10ms UPS rated or if that’s only AC plugs.
And don’t reverse image search and buy that cable.
You SHOULD need 5.5x2.5mm barrel jack, at least my cable needed one. Double check what your NAS needs.
In a battery charge cycle. the battery has a chip on it that sends information back to the USB PD source about what it needs (ie: what voltage level, how much current, etc). When a battery is empty, the system will dump as much current as the battery allows. This is called constant current mode. The voltage at this point can vary. Once the battery is close to being charged, it switches to what is call constant voltage mode. At that point, the voltage remains fixed and the current will vary and gradually decrease to 0 as the battery becomes fully charged.
If you are not charging a battery but instead are just a “sink” device, the PD source will supply whatever voltage and current that sink device tells it to send. There are particular standards. All new devices with a “wall wart” are basically going to be USB-PD moving forward thanks to the European legislation. While I am more of a fan of the marketplace determining the winners and losers of technology as opposed to legislation, I think replacing all those stupid coaxial connectors of various sizes with a single standard is a brilliant idea.
Also, USB-PD is NOT USB-C. It uses the USB-C connector and USB-C can have PD (or not). PD is strictly power delivery and you can power just about anything with it. The next standard will be going up to like 250 Watts or so.
But back to the OPs post - just because the USB-PD device can support 140 Watts, it doesn’t mean it will support 140 Watts at 12 Volts. Do some research on the USB-PD current and voltage standards. You are limited in USB-PD to a maximum of 5 A. So if you want to go higher in power output, you must raise voltage.
The latest PD spec supports 240 Watts but to get that you have to use an output voltage of 48 Volts.
I would be careful about trying to just use a USB-PD supply at 12 Volts because that means your maxim power is 60 Watts. If your NAS is nominally running at 50 Watts, that means at peak times, it is probably hitting well above 60. This means if it needs power, it won’t get it which will cause things to behave badly.
Now if you want to get complicated and use a 48 V output and then add a DC-DC buck converter to drop it down to 12 volts, have fun! That would be a big power supply.
I run an FSP 850 UPS for my NAS, two desktop PC’s, router and Ethernet switch.
We often have power interruptions of less than 30 seconds, which is still long enough to cause issues for these devices, without the UPS, but with the UPS only the screens blank.
Occasionally, like when there’s a big storm, we can be without power for hours. This is beyond the capacity of the UPS to support but the control app that runs on one of the PC’s monitors the UPS and, when on battery, if the remaining charge gets below 30% it sends commands to the other devices to shut them down, lastly shutting itself down. So there’s no risk of data loss/corruption. All this for less than £60 GBP delivered.
Well… not sure why this wasn’t (fully) correct…you said with many words exactly what I said(plus more background info like trickle charge mode). And with the limited info that OP gave, there is always a lot of ifs,buts and coconuts.
Also never try to overexplain things, when you are not sure if OP actually ever comes back…reddit has taught me, many, many, many people ask questions and abandon the topics without even so much as a second look. (no matter how short or detailed answers have been)
That would be a big power supply.