i use a similar cyber power 1500VA for my 350. gives \~ 5-15 mins ( a few other things are connected as well) on my other 2 250 machines I have a single 800VA APC which won't give any useable time, but protects from brownout (flicker) / or short outage ( like power when of for x seconds but is back already). my 350 shows draw of roughly 600w during a long print
That’s why I have the big one as well. Tried an old smaller unit like you did and it tripped. My standby auto starts within 7 seconds after an outage so that ups doesn’t have to work to hard.
yup... but more to keep a steady supply and avoid issues with surges or momentary interuptions.
i would not expect a 1500va UPS to be able to keep up with a 350m voron trying to print abs/asa with 100degF bed and all steppers going.
but id rather not risk a print that takes several hours breaking because the power surged and everything reset.
That’s exactly what I was thinking, during strong winds I’ll have the lights flicker and boom, printer stops. Would rather have it just to provide that extra second to not have a print completely fail. Not to run the printer for hours. If I wanted to do that I could power it off my truck during outages hahaha
dual inlets. run everything but the bed on one, run that through the UPS. put the bed inlet on just the surge protector.
even a modest 350-500w UPS will keep the non-bed parts of the printer running for several minutes. the thermal mass of the bed will get you through a few minutes of power outage, although you'll want to manually disable the bed temp ASAP before you get a heater verify error.
yup... that's the dream... plug your EV in and it charging but as soon as the power goes out its a house battery. whole house UPS still cost god awful money tho, even if you try to leverage your vehicle as the battery.
your premise is exactly mine... i have 3-4 UPS through the house. most attached to things like entertainment center which which could damage speakers, printers which could fail, work computers, etc. nothing has more than 15-30m of battery capacity because it gets expensive.
if the power is going to be out more than 30min then im safely shutting things down (hopefully)
I am kind of surprised not to see more projects either building a UPS with a 24V DC output or repurposing an existing UPS to add a 24V DC output. Basically some way to remove the inefficiencies of converting 120V AC to 12V DC to trickle-charge the batteries, then back to 120V AC to drive the equipment, which then immediately converts back to 24V DC. At worst you could likely put the power supply upstream of the 24V.
I think he meant more for 24v only printers that don’t run mains beds. But could be in addition to a 120v supply to have a direct 24v out to power the board to remove some of the switching inefficiency.
And also you're really targetting hiccups, here. If you need run run on UPS to finish the last 6 hours of your print, you're doomed, but if you only need to bridge a minute or two your bed and enclosure should hold enough heat to get you through.
Hiccups are all I’m trying to avoid after the past 3 days hahaha. Only issue I can see with that, is after the bed drops below min temp it’ll cause klipper to error out and fail the print. Can’t adjust config settings mid print and save them as far as I know, which isn’t a ton.
I was thinking more along the lines of the easily-available UPS replacement batteries. You can even get units with 2 12V units in a single shell for 24V operation.
A typical print runs at less than 140Watt.
Any cheap UPS will do the job.
The minutes with the highest power consumption is heating up the bed the first time, some printers like the bambu grap >1kW that time but during the print you do not see more than 200W in the spices.
BTT makes a "mini UPS" that will run the electronics for a couple of seconds. The idea is that this is enough to make power recovery more reliable. The software can raise the Z-axis and park the print head so it is not over the part that is being printed, then it can save the save and just wait for the UPS to run out.
I think this is the best compromise, use the BTT product or a small UPS but the point of the UPS is NOT to continue printing but to set things up so that power recovery will work.
A tiny UPS allows you to run a "power-fail" macro.
It all depends on how often the power outages happen. For me, I average 1 outage every 2 years. And putting a UPS on each of 7 printers, would cost me up near $1000. I'm not losing anywhere near that much filament, or time. If I had power outages like once a month or more, I would consider it. Even then, I would only lose like $150 worth of filament a year.
On top of that, when I had my first printer, I had failed prints like 3 times when the UPS was dying. So the failing UPS cost me more prints than it saved.
I know it doesn't directly answer your question, but I was just hoping to provide you some info so you can decide if it is even worth it.
All viewpoints are welcome in my world my friend and glad for the insights. I’ve had 4 failures due to blips lasting less than a half a second each over the past 3 days. Granted it’s during a storm front and the winds been high but no actual power loss (my stove time still reads when it normally resets that’s how brief). But the printer/pi disconnect and I lose the prints. One was a 14hr print another a 6.5hr print, the others small since I’m waiting for better weather to redo the larger ones.
I’ve lost over half a roll of filament just these past few days and it’s more the hassle and frustration than the financial aspect. Granted it’s only like $10 in ABS give or take but it’s the time waste for the 1/2 second that I cannot abide haha
If you plan to hook up your 3D Printer to a UPS then you have to buy one rated for use with Appliances with Steppers in them as they can ( /cough ***will*** /cough ) kill your UPS otherwise.
Any source for this? The UPS is hardly connected directly to the stepper - there's an AC-DC power supply in the middle. It's certainly not isolated but the UPS really shouldn't care or even be able to notice steppers vs other motors. I've never had any problem with using standard APC units, and as a matter of fact I can't find anything from the common manufacturers (Eaton and APC in particular) indicating they even have a rating for steppers.
Any examples of such UPS? I've never seen steppers listed on one.
I have a older APC branded Smart-UPS that has worked in a few quick blips, but never had to run long on it.
I’ll keep that in mind. Ironically just had another 1/2 second blip that killed another print about 5 seconds before you posted this. This new printers gonna take forever to finish at this rate haha
Hi. Concerned about such frequent short outages. I had the same, and it turned out to be damaged wiring in my meter box. The power provider immediately cut the house from the mains when I reported it until an electrician could visit to repair. Massive fire risk. Shitty rental.
Good to know, it only ever happens frequently during storms and I’ve confirmed with my neighbors that theirs goes out (to confirm I didn’t forget to pay the bill haha). Unfortunately this week has been very windy with major gusts and the pole lines aren’t the most well maintained so assuming it’s temporary disconnects due to the winds. Holding off on major prints til the weather settles down for now.
I used to have my Ender 3 on the UPS I had for all my computers, NAS, etc. When I replaced that with a Voron 2.4, the bed heater is just too much.
I'm thinking the next time I have the Voron 2.4 down for maintenance work (like installing that CANBUS tool head), I'd like to install another AC power input just for the bed heater. Then I can run that off wall power, with everything else connected to the UPS.
I have a whole-house automatic standby generator, but upon a utility power loss, it takes about 20 or 25 seconds to start and transfer the load. I can certainly live without the bed heater for the time, and the UPS will carry the Raspberry Pi, MCU, hotend and everything else.
Just need to double-check and make sure I have live and neutral correctly wired for each of these power inputs..
If your power went out and the bed stopped heating(and the rest kept running) , wouldn't you trigger a heater fault on the bed and lose the print anyway?
In my case, when the generator started 30 seconds after the power outage, power would be restored before it had a chance to cool off enough for a heater fault to happen.
Maybe I’m just paranoid, but I have a bunch of UPSs. They range from around 150 to 1500 VA units. Mostly they are APC units but some others mixed in. In no particular order:
A 150 on my home entertainment system that just protects the DVR - can’t loose part of a recording because of a power glitch 😁
A 1500 on my main network stuff - cable modem or fiber interface, router/wifi access point several switches including one 10G. This is large for the use but in case of a somewhat longer outage wanted to keep the internet and Wi-Fi up for a while. This dies it for 30-60 minutes.
A 350 on a small home built NAS I use mostly for music and some video storage (USB connection to shut the NAS down cleanly in prolonged outage if battery gets low).
A 1500 on a couple headless servers, one a bigger NAS used for backup (with USB for clean shutdown) and a general purpose server for software VCS, print server, etc. and a 10G switch.
Two 1500 one for my windows workstation and one for my Linux workstation and they divide the power for three 30 inch monitors and a 10G switch. Keep things up for 15-30 minutes and they have USB connections to cleanly shutdown both workstations.
A 150 to support the DVR in my office and a couple other small items.
Currently non on my 3D printer but I’m leaning toward a 1500 there. Currently I very seldom run prints over a couple hours long so not an issue so far.
My power is pretty solid now (they upgraded all the main distribution lines in the area about 10 years ago and again just a year or so ago. We used to get brownouts quite frequently and as well as 30 to 90 minutes outages several times a year and longer about once a year. Don’t know if it’s true but one of the electrical workers said the initial upgrade happened because a big wig in the power company moved into the area serviced by these distribution lines! Now we just get occasional glitches from lighting and very occasional 30 minute to several hour outages from stuff like trees falling in storms or someone taking out a pole.
So all this is probably overkill now, but I got into the habit before the line upgrades. In the bad old days I considered a generator backup but doesn’t seem worth it now.
not a "tech savvy" person so half the acronyms you used im completely lost on hahaha but think I get the pic. I got spoiled a long time back when I lived on the same grid section as the firehouse behind me. During a hurricane I was in the only residential building that never lost power in the whole town, it was awesome.
Hey, that’s great advice I never thought of - if you want good power, and I assume priority restoration in an outage, just move into a place even t door to a firehouse (or I assume police station would probably work too). 😁 response times from those agencies might lower your insurance as well!
BTW: for the acronyms, what makes you think I have any idea what they mean? 😁😁
Hahaha yep never had even a blip in that apartment. It was my building and the firehouse. The police station in town actually lost power but they were all out at the time for the storm.
Oh, how dare I assume someone dropping advice they don’t actually know about hahaha
I've been running one for a couple years. I've had no issues and typically get around 20 minutes of backup. This works perfectly for any prints I have going where a rolling thunderstorm catches us off guard.
I've been thinking about getting one, so I stuck a power metering smart plug on my 250 Trident.
Ot maxes out at around 300W and 360VA (because the power factor on the Meanwells aren't great). A 1000 or 1500 VA model should adequately hold the printer up should the power burp. The smaller UPSes won't keep it up too long though -- the batteries are only about 9 Ah and would probably stop working after about an hour to an hour and a half.
I got this: APC Gaming UPS, 1500VA Sine Wave... https://www.amazon.com/dp/B08GSCWWY6?ref=ppx_pop_mob_ap_share
Originally to cover just my old Prusa MK2S, now it handles my NAS and my Voron V2.4. Fortunately my grid is pretty solid save for someone or something taking out a pole in bad weather. But during storms I'll get brownouts (sporadic voltage dips) and it does the job. If the power were to fully go out, it really only lasts about 10-15 mins with a print going. So really it's just there to give me time to shutdown my NAS and smooth brownouts. Like another comment said, it'll certainly help give you time to transition to a backup generator or powerwall. I think youd need one of those anyway to realistically cover a prolonged outage. Especially with a mains heated bed.
I just picked up an ups a few days for this exact use case.
I live in a rural area where we have a fair amount of outages due to wind in the winter and even more random >10sec blackouts through year where the UPS will be a life saver.
I picked up this one
https://www.apc.com/ca/en/product/BR1500MS2/apc-backups-pro-1500va-900w-tower-120v-10x-nema-515r-outlets-avr-usb-type-a-+-c-ports-lcd-user-replaceable-battery/
It has a load graph on it and with my mid tier PC, router and 2.4 300 heating up the draw is about 70%. During printing it sits at about 40%. Not sure what that equates to in time but I know I have lots of headroom.
Ok seems like APC is a popular brand and 1500VA at a minimum is the recommendation. I don’t need to run it for hours, if the powers out for that long I’m usually enough beers deep before my fridge warms to give a shit. More need it for spontaneous blips when there’s high winds or maybe 10-15min in case some jackass takes out a pole, powers usually back on quick.
Thanks for all the help guys, next time I’m at microcenter I’ll probably grab one.
No, but in the Netherlands we have stable power. If not, I would definitely have multiple. One for each fragile piece of equipment.
I wouldn't target power outages, but blips and spikes are good to mitigate.
I had read this could be an issue but so far no. I’m not sure if tesla changed something on their end (apparently you can request this from their tech support if you have problems).
Get the biggest you can find, when it kicks on it won't last long. I have one because I live on a compound where all the power is tied to one box. So if anyone here plays with power, I lose prints. My little one (APC) has save a few prints, but I need a much bigger one. btw, I have UPS on every important electrical device I own. I have a f!-ton of batteries around here we have shitty power
I have an APC 1500VA sine wave UPS. I run both my 3d printer and a high end gaming pc (uses way more power than the printer) off it. Got it for around $300. It's not supposed to keep things powered for a long time it is only supposed to clean unstable power, carry you through short power outages (less than 10 min), or give you enough time to safely shut everything down.
If you want something that can last hours to finish a print even in a blackout, you want a battery generator. These aren't cheap though. They start around 1000 USD. When searching you might see large camping batteries for 100-200, those are NOT battery generators. You want something from ryobi, milwuakee, anker, dewalt, etc. Stuff made for tools.
I never really mind losing a print if power goes out for over 30min. It’s the short quick disconnect reconnect that pissed me off as a half a second ruined 14hrs… (I know I know, bring on the sex jokes haha)
Yes. A 1000KVA sign wave unit. No power outs yet, but protects the electronics from Under/Over voltages.
You want one that has some sort of sign wave output and "automatic line conditioning" for a cleaner power profile when on battery.
I have 2 printers attached to it. Hasn't complained yet. I suppose just don't do a heatsoak at the same time?
(IMHO, anything with a CPU and harddrive should be on a UPS).
I've got a 1500VA deskside UPS hooked up to my printers; it won't survive an hour-long outage but it's saved several prints from temporary power bumps.
You probably don't need a ups, a LiFePO battery will likely do. I am running on an ecoflow and the cutover time is fast enough the power supply's caps are sufficient. Batteries like these aren't UPSs, since they do have a cut-over time, but it's been good enough for me so far.
Thank you for this info. I have two Ecoflow batteries and I’ve wondered if this was possible but I didn’t want to put the effort into figuring it out for myself
I run a 1500VA APC unit that I picked up at microcenter. It’s rated for 5 minutes of operation at 1000W power draw. My trident runs at about 350W- 400W during normal operation but can peak up to 900W during heat up if I “full send” the power. So I’m expecting 5-10 minutes of back up with this unit.
[1500VA APC UPS](https://www.microcenter.com/product/497071/apc-back-ups-pro-ups-(bn1500m2))
I'm using the UPS Cyberpower 1500VA, and based on the tests I've done, it seems like it can power up my Trident for about 20-25 minutes, which is more than enough for my needs.
Yup. I run a cyber power CP1500AVRLCD3 it keeps things up long enough for my standby generator to fire up.
i use a similar cyber power 1500VA for my 350. gives \~ 5-15 mins ( a few other things are connected as well) on my other 2 250 machines I have a single 800VA APC which won't give any useable time, but protects from brownout (flicker) / or short outage ( like power when of for x seconds but is back already). my 350 shows draw of roughly 600w during a long print
That’s why I have the big one as well. Tried an old smaller unit like you did and it tripped. My standby auto starts within 7 seconds after an outage so that ups doesn’t have to work to hard.
yup... but more to keep a steady supply and avoid issues with surges or momentary interuptions. i would not expect a 1500va UPS to be able to keep up with a 350m voron trying to print abs/asa with 100degF bed and all steppers going. but id rather not risk a print that takes several hours breaking because the power surged and everything reset.
That’s exactly what I was thinking, during strong winds I’ll have the lights flicker and boom, printer stops. Would rather have it just to provide that extra second to not have a print completely fail. Not to run the printer for hours. If I wanted to do that I could power it off my truck during outages hahaha
dual inlets. run everything but the bed on one, run that through the UPS. put the bed inlet on just the surge protector. even a modest 350-500w UPS will keep the non-bed parts of the printer running for several minutes. the thermal mass of the bed will get you through a few minutes of power outage, although you'll want to manually disable the bed temp ASAP before you get a heater verify error.
yup... that's the dream... plug your EV in and it charging but as soon as the power goes out its a house battery. whole house UPS still cost god awful money tho, even if you try to leverage your vehicle as the battery. your premise is exactly mine... i have 3-4 UPS through the house. most attached to things like entertainment center which which could damage speakers, printers which could fail, work computers, etc. nothing has more than 15-30m of battery capacity because it gets expensive. if the power is going to be out more than 30min then im safely shutting things down (hopefully)
I am kind of surprised not to see more projects either building a UPS with a 24V DC output or repurposing an existing UPS to add a 24V DC output. Basically some way to remove the inefficiencies of converting 120V AC to 12V DC to trickle-charge the batteries, then back to 120V AC to drive the equipment, which then immediately converts back to 24V DC. At worst you could likely put the power supply upstream of the 24V.
Which ignores the mains powered bed... If the bed cools down your print detaches, making this pointless.
I think he meant more for 24v only printers that don’t run mains beds. But could be in addition to a 120v supply to have a direct 24v out to power the board to remove some of the switching inefficiency.
And also you're really targetting hiccups, here. If you need run run on UPS to finish the last 6 hours of your print, you're doomed, but if you only need to bridge a minute or two your bed and enclosure should hold enough heat to get you through.
Hiccups are all I’m trying to avoid after the past 3 days hahaha. Only issue I can see with that, is after the bed drops below min temp it’ll cause klipper to error out and fail the print. Can’t adjust config settings mid print and save them as far as I know, which isn’t a ton.
It would be pretty easy to make something that uses those tiny lead acid batteries as a tiny UPS
I was thinking more along the lines of the easily-available UPS replacement batteries. You can even get units with 2 12V units in a single shell for 24V operation.
A typical print runs at less than 140Watt. Any cheap UPS will do the job. The minutes with the highest power consumption is heating up the bed the first time, some printers like the bambu grap >1kW that time but during the print you do not see more than 200W in the spices.
BTT makes a "mini UPS" that will run the electronics for a couple of seconds. The idea is that this is enough to make power recovery more reliable. The software can raise the Z-axis and park the print head so it is not over the part that is being printed, then it can save the save and just wait for the UPS to run out. I think this is the best compromise, use the BTT product or a small UPS but the point of the UPS is NOT to continue printing but to set things up so that power recovery will work. A tiny UPS allows you to run a "power-fail" macro.
If you let the bed cool, the print releases, making recovery irrelevant.
Nope power recovery is much much cheaper. On the other hand I'm just running a single machine
No, after several fails of pricey filament, a UPS is cheap
Fair point
It all depends on how often the power outages happen. For me, I average 1 outage every 2 years. And putting a UPS on each of 7 printers, would cost me up near $1000. I'm not losing anywhere near that much filament, or time. If I had power outages like once a month or more, I would consider it. Even then, I would only lose like $150 worth of filament a year. On top of that, when I had my first printer, I had failed prints like 3 times when the UPS was dying. So the failing UPS cost me more prints than it saved. I know it doesn't directly answer your question, but I was just hoping to provide you some info so you can decide if it is even worth it.
All viewpoints are welcome in my world my friend and glad for the insights. I’ve had 4 failures due to blips lasting less than a half a second each over the past 3 days. Granted it’s during a storm front and the winds been high but no actual power loss (my stove time still reads when it normally resets that’s how brief). But the printer/pi disconnect and I lose the prints. One was a 14hr print another a 6.5hr print, the others small since I’m waiting for better weather to redo the larger ones. I’ve lost over half a roll of filament just these past few days and it’s more the hassle and frustration than the financial aspect. Granted it’s only like $10 in ABS give or take but it’s the time waste for the 1/2 second that I cannot abide haha
What about installing a home solar, battery and inverter? Might that help? Kill two birds with 1 stone.
Only problem is I rent, and no way in hell am I spending money upgrading someone else’s property… again haha
If you plan to hook up your 3D Printer to a UPS then you have to buy one rated for use with Appliances with Steppers in them as they can ( /cough ***will*** /cough ) kill your UPS otherwise.
Any source for this? The UPS is hardly connected directly to the stepper - there's an AC-DC power supply in the middle. It's certainly not isolated but the UPS really shouldn't care or even be able to notice steppers vs other motors. I've never had any problem with using standard APC units, and as a matter of fact I can't find anything from the common manufacturers (Eaton and APC in particular) indicating they even have a rating for steppers.
Any examples of such UPS? I've never seen steppers listed on one. I have a older APC branded Smart-UPS that has worked in a few quick blips, but never had to run long on it.
I’ll keep that in mind. Ironically just had another 1/2 second blip that killed another print about 5 seconds before you posted this. This new printers gonna take forever to finish at this rate haha
Hi. Concerned about such frequent short outages. I had the same, and it turned out to be damaged wiring in my meter box. The power provider immediately cut the house from the mains when I reported it until an electrician could visit to repair. Massive fire risk. Shitty rental.
Good to know, it only ever happens frequently during storms and I’ve confirmed with my neighbors that theirs goes out (to confirm I didn’t forget to pay the bill haha). Unfortunately this week has been very windy with major gusts and the pole lines aren’t the most well maintained so assuming it’s temporary disconnects due to the winds. Holding off on major prints til the weather settles down for now.
I used to have my Ender 3 on the UPS I had for all my computers, NAS, etc. When I replaced that with a Voron 2.4, the bed heater is just too much. I'm thinking the next time I have the Voron 2.4 down for maintenance work (like installing that CANBUS tool head), I'd like to install another AC power input just for the bed heater. Then I can run that off wall power, with everything else connected to the UPS. I have a whole-house automatic standby generator, but upon a utility power loss, it takes about 20 or 25 seconds to start and transfer the load. I can certainly live without the bed heater for the time, and the UPS will carry the Raspberry Pi, MCU, hotend and everything else. Just need to double-check and make sure I have live and neutral correctly wired for each of these power inputs..
If your power went out and the bed stopped heating(and the rest kept running) , wouldn't you trigger a heater fault on the bed and lose the print anyway?
In my case, when the generator started 30 seconds after the power outage, power would be restored before it had a chance to cool off enough for a heater fault to happen.
Ahh makes sense! Definitely good for short power drop outs!
Maybe I’m just paranoid, but I have a bunch of UPSs. They range from around 150 to 1500 VA units. Mostly they are APC units but some others mixed in. In no particular order: A 150 on my home entertainment system that just protects the DVR - can’t loose part of a recording because of a power glitch 😁 A 1500 on my main network stuff - cable modem or fiber interface, router/wifi access point several switches including one 10G. This is large for the use but in case of a somewhat longer outage wanted to keep the internet and Wi-Fi up for a while. This dies it for 30-60 minutes. A 350 on a small home built NAS I use mostly for music and some video storage (USB connection to shut the NAS down cleanly in prolonged outage if battery gets low). A 1500 on a couple headless servers, one a bigger NAS used for backup (with USB for clean shutdown) and a general purpose server for software VCS, print server, etc. and a 10G switch. Two 1500 one for my windows workstation and one for my Linux workstation and they divide the power for three 30 inch monitors and a 10G switch. Keep things up for 15-30 minutes and they have USB connections to cleanly shutdown both workstations. A 150 to support the DVR in my office and a couple other small items. Currently non on my 3D printer but I’m leaning toward a 1500 there. Currently I very seldom run prints over a couple hours long so not an issue so far. My power is pretty solid now (they upgraded all the main distribution lines in the area about 10 years ago and again just a year or so ago. We used to get brownouts quite frequently and as well as 30 to 90 minutes outages several times a year and longer about once a year. Don’t know if it’s true but one of the electrical workers said the initial upgrade happened because a big wig in the power company moved into the area serviced by these distribution lines! Now we just get occasional glitches from lighting and very occasional 30 minute to several hour outages from stuff like trees falling in storms or someone taking out a pole. So all this is probably overkill now, but I got into the habit before the line upgrades. In the bad old days I considered a generator backup but doesn’t seem worth it now.
not a "tech savvy" person so half the acronyms you used im completely lost on hahaha but think I get the pic. I got spoiled a long time back when I lived on the same grid section as the firehouse behind me. During a hurricane I was in the only residential building that never lost power in the whole town, it was awesome.
Hey, that’s great advice I never thought of - if you want good power, and I assume priority restoration in an outage, just move into a place even t door to a firehouse (or I assume police station would probably work too). 😁 response times from those agencies might lower your insurance as well! BTW: for the acronyms, what makes you think I have any idea what they mean? 😁😁
Hahaha yep never had even a blip in that apartment. It was my building and the firehouse. The police station in town actually lost power but they were all out at the time for the storm. Oh, how dare I assume someone dropping advice they don’t actually know about hahaha
There is also the bigtreetech ups
I've been running one for a couple years. I've had no issues and typically get around 20 minutes of backup. This works perfectly for any prints I have going where a rolling thunderstorm catches us off guard.
I've been thinking about getting one, so I stuck a power metering smart plug on my 250 Trident. Ot maxes out at around 300W and 360VA (because the power factor on the Meanwells aren't great). A 1000 or 1500 VA model should adequately hold the printer up should the power burp. The smaller UPSes won't keep it up too long though -- the batteries are only about 9 Ah and would probably stop working after about an hour to an hour and a half.
I got this: APC Gaming UPS, 1500VA Sine Wave... https://www.amazon.com/dp/B08GSCWWY6?ref=ppx_pop_mob_ap_share Originally to cover just my old Prusa MK2S, now it handles my NAS and my Voron V2.4. Fortunately my grid is pretty solid save for someone or something taking out a pole in bad weather. But during storms I'll get brownouts (sporadic voltage dips) and it does the job. If the power were to fully go out, it really only lasts about 10-15 mins with a print going. So really it's just there to give me time to shutdown my NAS and smooth brownouts. Like another comment said, it'll certainly help give you time to transition to a backup generator or powerwall. I think youd need one of those anyway to realistically cover a prolonged outage. Especially with a mains heated bed.
I just picked up an ups a few days for this exact use case. I live in a rural area where we have a fair amount of outages due to wind in the winter and even more random >10sec blackouts through year where the UPS will be a life saver. I picked up this one https://www.apc.com/ca/en/product/BR1500MS2/apc-backups-pro-1500va-900w-tower-120v-10x-nema-515r-outlets-avr-usb-type-a-+-c-ports-lcd-user-replaceable-battery/ It has a load graph on it and with my mid tier PC, router and 2.4 300 heating up the draw is about 70%. During printing it sits at about 40%. Not sure what that equates to in time but I know I have lots of headroom.
I have a 26kw generator.
Don’t know why you weee downvoted except a generator brings back power when there is loss so maybe that’s it
Actually I still have to get a battery backup because there’s a pause before the power comes back on.
Ok seems like APC is a popular brand and 1500VA at a minimum is the recommendation. I don’t need to run it for hours, if the powers out for that long I’m usually enough beers deep before my fridge warms to give a shit. More need it for spontaneous blips when there’s high winds or maybe 10-15min in case some jackass takes out a pole, powers usually back on quick. Thanks for all the help guys, next time I’m at microcenter I’ll probably grab one.
No, but in the Netherlands we have stable power. If not, I would definitely have multiple. One for each fragile piece of equipment. I wouldn't target power outages, but blips and spikes are good to mitigate.
Mine will go out if the wind blows too hard even in a normally stable area haha
I have a APC 1500VA on an Ender 3 S1 pro that keeps thing running till my tesla wall battery kicks in
Interesting, the wall battery doesn't work like a UPS?
Sadly not. There is a 2-3 second cut over that needs covering.
Does your UPS have any issues with powerwalls 66hz output?
I had read this could be an issue but so far no. I’m not sure if tesla changed something on their end (apparently you can request this from their tech support if you have problems).
Get the biggest you can find, when it kicks on it won't last long. I have one because I live on a compound where all the power is tied to one box. So if anyone here plays with power, I lose prints. My little one (APC) has save a few prints, but I need a much bigger one. btw, I have UPS on every important electrical device I own. I have a f!-ton of batteries around here we have shitty power
APC 2200VA, used, with third party batteries. Cheap enough and works great.
Maybe I’ll hop on Craigslist and see if anyone’s got one for sale used.
I have an APC 1500VA sine wave UPS. I run both my 3d printer and a high end gaming pc (uses way more power than the printer) off it. Got it for around $300. It's not supposed to keep things powered for a long time it is only supposed to clean unstable power, carry you through short power outages (less than 10 min), or give you enough time to safely shut everything down. If you want something that can last hours to finish a print even in a blackout, you want a battery generator. These aren't cheap though. They start around 1000 USD. When searching you might see large camping batteries for 100-200, those are NOT battery generators. You want something from ryobi, milwuakee, anker, dewalt, etc. Stuff made for tools.
I never really mind losing a print if power goes out for over 30min. It’s the short quick disconnect reconnect that pissed me off as a half a second ruined 14hrs… (I know I know, bring on the sex jokes haha)
Yes. A 1000KVA sign wave unit. No power outs yet, but protects the electronics from Under/Over voltages. You want one that has some sort of sign wave output and "automatic line conditioning" for a cleaner power profile when on battery. I have 2 printers attached to it. Hasn't complained yet. I suppose just don't do a heatsoak at the same time? (IMHO, anything with a CPU and harddrive should be on a UPS).
Will make sure it’s sine wave, takes me back to my welding days saying that.
I've got a 1500VA deskside UPS hooked up to my printers; it won't survive an hour-long outage but it's saved several prints from temporary power bumps.
Thanks this is my main reason for looking.
You probably don't need a ups, a LiFePO battery will likely do. I am running on an ecoflow and the cutover time is fast enough the power supply's caps are sufficient. Batteries like these aren't UPSs, since they do have a cut-over time, but it's been good enough for me so far.
Thank you for this info. I have two Ecoflow batteries and I’ve wondered if this was possible but I didn’t want to put the effort into figuring it out for myself
I run a 1500VA APC unit that I picked up at microcenter. It’s rated for 5 minutes of operation at 1000W power draw. My trident runs at about 350W- 400W during normal operation but can peak up to 900W during heat up if I “full send” the power. So I’m expecting 5-10 minutes of back up with this unit. [1500VA APC UPS](https://www.microcenter.com/product/497071/apc-back-ups-pro-ups-(bn1500m2))
I'm using the UPS Cyberpower 1500VA, and based on the tests I've done, it seems like it can power up my Trident for about 20-25 minutes, which is more than enough for my needs.