questionswhat are the best ups (universal power supply…


If that's a laser printer, I would recommend leaving that off the UPS (still use the surge suppressor though) because they can take a lot of power and will reduce the amount of "on-time" you get with your UPS when the power goes off.

I use an APC 1500VA that has a sine wave output. Those are extremely expensive at around $800 each but I think it was worth it because as much as I use my computer and how much I rely on it for my job. I also use a Honda generator that also has a sine wave output.

You can get much cheaper ones if you don't care what the output signal looks like. It's amazing that you can get a cheap 1500 VA unit for about $200 (again if you don't care about the quality of the power).

Here's one from Best Buy. It's not on sale but I found it in 15 seconds or less. You can search for others if this one doesn't work for you.$abcat0515043&cp=1&lp=4


Take this as you want.

Look for replacement batteries for you equipment. Our old APCs are fantastic, not much to look at but they work.

I did not have good long term luck with newer APC and Tripplite. APC Power-Saving Back-UPS Pro 1000 and TrippLite OmniSmart OMNI900LCD - UPS - 475 Watt - 900 VA (OMNI900LCD) We have several of this size/brand and they decide to just quit. Unplugging them and plugging them back in made them work. We considered the power source as causing them to trip, but it happened more often the older they got and stopped when they were replaced. I took one home to test and got the same results.
At about 2 years old they start to just trip for no reason. Support could not find anything wrong and they were willing to replace them under warranty.

Never put a laser printer on a UPS.


I've heard of sine wave power and I know there are others, but when I read what different types there are, it's all greek to me. Is there a best type of power output to have? I'm fairly sure that a 1500 VA would fill all of my desktop needs. Oh, and I don't use a laser printer, thanks for bringing that up.

Thanks for all the info, it is very much appreciated.


My spouse @thurmanite works on these for a living, and we have several in our home. Let's see if I can get him over here to give you an answer.


@zueistpriest: OK, so just to provide some information on my qualifications, I work on single phase and 3 phase UPS's which range from 8KVA up to 1100KVA. There are 3 types of UPS; Standby, Line Interactive, and Double Conversion. Standby UPS's are the cheapest, they provide no filtering or power conditioning and only "turn on" when the power goes out. They are functionable, but typical designed to just be replaced and tossed out once the batteries no longer supported the load.

Line Interactive and Double Conversion UPS's are much better, yet more costly. They both will have removable and replaceable batteries, and many of them will also offer some type of network or computer connectivity so the UPS can be monitored. Line interactive UPS's will protect against power outages as well as over voltages and brown outs. Double Conversion will protect against all power anomalies including voltage transients and harmonic distortion.


So, regardless whether you pick a Line Interactive or a Double Conversion UPS, you need to size it correctly. I have my tower, monitor, speaker system, and my internet on my Powerware 5125 1500VA UPS, and I have about ~40 min of runtime during an outage. I only use about 221VA when my system is at idle, and about 450VA while playing a game.

for more on the power issues you may encounter from the electricity grid, see below.


Now, for the different brands. IMO, the Eaton brand of UPS's are pretty nice and I would say that even if I didn't work for them. I have a 5125, a 5110, and a 5S. All 3 of these machines are Line Interactive UPS's, and the 5S has a True Sine wave output meaning it cleans up the AC power before it passes it out to your equipment. They all have hot swappable batteries, meaning you don't have to power off the UPS to replace the batteries, and have computer or network monitoring capability.

I find that Tripp-Lite are crap, and typically don't have replaceable batteries and are disposable. Same with CyberPower. APC is the global leader, but I have found that lately their newer offerings aren't as high quality as they used to be. Still, they are the most readily buyable and now have many good features, such as hot swappable batteries.

Any other questions, do not hesitate to ask. I hope this all helps.


Thank you so much! All that info is extremely informative and clarifying :) Sounds like my next buy is going to be an Eaton.


I bought an APC from Costco for about $100. With computer, monitor, modem, router, phone base, and Ooma powered by it, I have 78 minutes B/U time.


@davemeigs5: That is the one thing I can say that APC does better than the rest, is size for size they will give you more backup time on battery than an Eaton UPS will. Of course, this is thanks to fewer but larger batteries being in the machine, which increases weight and are more costly to replace.


@davemeigs5: Could you please post the specific model number for the APC you got from Costco?


By the way, UPS stands for "uninterruptible power supply."