A UPS (uninterruptible power supply) is a device used to provide instant backup power to critical systems for safe shutdown in the case of a power outage.

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UPS acting up after upgrading GPU

I have a second PC, hooked up to a 650VA UPS. I recently upgraded its graphics card from a Radeon HD6850 to a Geforce GTX580. When I updated the Windows Experience Index thingy, the UPS started ...
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1k views

Configure windows to notify NAS for UPS shutdown

I have a TrippLite UPS connected to my Vista box. I would like to have the Vista box notify a NAS which is also on the same UPS that it's time to shutdown. The NAS is willing to contact a "network" ...
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2k views

Is it possible to test an UPS battery without having the UPS nearby?

I just started with a new company and they have a stack of replacement batteries for UPS's located at the branch offices. The problem is, no one knows if these batteries are good or not, and the ...
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2answers
577 views

UPS turns off randomly with a constant alarm sound

I have an APC UPS that sorta does the opposite thing to what it should: it can randomly die and start screaming, cutting the power supply of my PC. The PC works fine when connected to a regular ...
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2answers
104 views

OS X - detect UPS going on to battery

is it possible to get notification from OS X (10.5 Leopard or higher) that the UPS has gone onto battery - i.e. are there any notifications or system config changes I can monitor? If it's possible ...
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2answers
728 views

Why my Computer re-starts at time of power outage?

My computer (sometimes) shuts down for a fraction of second and then restarts at time of power outage. The most weird thing happening is that when I switch off the electric supply of UPS (ie. where ...
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3answers
370 views

Is it safe to tilt a UPS battery while in use?

I've got an old UPS for which I bought a new battery. The new battery is different in size (longer). Thus it doesn't fit in the structure. However, if I keep the new battery vertically, I can manage ...
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1answer
268 views

Is the APC BR700G UPS (or similar) compatible with Active PFC power supplies?

I'm looking at getting a UPS for my home computer. So far the APC BR700G looks very promising, except for one thing: one of the reviews on Newegg says that this UPS does not work with a power supply ...
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336 views

UPS for hard drive protection

I am in a place where electricity is not ideal (old house, no ground), sometimes it occasionally shuts down and supposedly there are some spikes. I consider using UPS with the goal to increase ...
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3answers
186 views

What is the correct way to check the efficiency of an UPS?

I have a UPS made by Israeli company - Advice. I read somewhere that every few months, UPS should be checked for operability by disconnecting it from the mains, then plugging mid and high powered ...
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4answers
590 views

Periodical Powerline LAN Performance Spikes

I have some problems with my powerline LAN: The network works perfectly fine 80% of the time, but 20% of the time it is really slow. E.g. if PC1, PC2 and PC3 are playing an online game the ping drops ...
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1k views

APC ups es 700 randomly overload

First of all, I live in Italy, Europe, so keep this in mind for Volt/Watt considerations. Standard voltage in Italian apartments is 220V. In my living room I have 2 APC ups, one being an ES-550 and ...
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Can a UPS be too powerful?

Our old network admin bought the top range UPS a few months ago but never came around to setting it up and is no longer with the company. Now the old UPS broke down and needs to be replaced, but an ...
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2answers
237 views

Mac randomly shutting down with APC UPS

My Mac is randomly shutting down even though I have an APC UPS. I bought a new Mac, and the same thing is happening with this computer, so it is not a power supply issue. Any ideas? The UPS ...
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6answers
2k views

Computer shutdown unexpectedly. Can it be related to bad current?

I have a new desktop computer (Lenovo M81) that shutdowns unexpectedly. Other times, it is mouse and keyboard that become unresponding. If I put the computer to sleep and awake it, everything returns ...
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4answers
939 views

Internal 5.25" DC UPS [closed]

I think we need the following internal UPS product: Can be fit to 5.25 drive bay (like optical drive). You connect PSU to this UPS with standard 24 PIN PC Main connector + other connectors for ...
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1answer
235 views

Is My PSU compatible with this UPS

I have this PSU and this UPS, however due to the PSU being/having an active PFC (power factor correction) it is incompatible with my UPS (at least according to APC tech support, for reference see my ...
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3answers
2k views

Computer hangs due to underpowered UPS?

I just bought a new UPS. Now since I started using it I experienced at least 3 random freeze in Windows 7 and it happens during the first 10 minutes of start-up. Note when I say freeze, I mean I ...
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4answers
7k views

Does a UPS charge it's battery even if my computer is turned on?

I bought a new UPS and the manual says something like "the UPS must charge for 24 hours before it can work properly..." My question is, does it charge even if my computer is turned-on or should I ...
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2answers
2k views

Do I need to turn off my UPS when I power off my PC?

Do I need to turn off my UPS when I power off my PC? Or, put differently, is it okay for the UPS to be turned on all the time?
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2answers
641 views

Will a 300W UPS work fine if my PSU is 500W?

I am getting a UPS (Uninterrupted Power Supply), currently here are my options: http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=BE500R-PH ...
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3answers
5k views

What Is AVR Mode In UPS Software Management?

When UPS was disconnected from power source and 25W desk lamp was connected to it, all was normal: But as soon as i have unplugged it and plugged in 95W fan, AVR "Normal" changed to up arrow: ...
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1answer
301 views

To place a Kill A Watt meter between the PSU and UPS or between the UPS and Wall Outlet?

Are you supposed to place a Kill A Watt meter between the PSU and UPS like so: PSU--Kill A Watt--UPS--Wall Outlet? or are you supposed to place a Kill A Watt meter after the UPS like so: ...
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348 views

How can I get WinPower 3.2.0.2 to find my UPS on Linux

How can I get WinPower 3.2.0.2 to find my UPS on Linux? I'm using Ubuntu 11.10 I have an Advice UPS After install WinPower, it cannot detect the UPS which is connected with USB cable.
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3answers
1k views

My UPS has a 5ms switchover time, server shuts off during said time

Is there anything I can do to prevent the server from shutting down? (bios setting etc). the server in question is an HP Proliant ML350 G6. I've got an eaton 5110 UPS and Eaton claims that we need to ...
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3answers
4k views

Does UPS make any sound when not powering computer?

I would like to buy UPS, but the review I read: http://www.tomshardware.com/reviews/apc-smt1500-cyberpower-cp1500pfclcd-tripp-lite-smart1500slt,2785-12.html make me alert of one thing -- the noise ...
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3answers
2k views

How can I select a good UPS for network hardware?

After a recent power outage I realized that while all our main computers are laptops with battery power, the WiFi and modem are not. Cable service to the area continued working fine, but without ...
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1answer
534 views

Is this UPS strong enough? [closed]

I have a pretty power hungry rig, enough that I threw an 850w PSU in there. I've played around with a few wattage estimation/calculator sites and they've all suggested I would need at least 650-750w ...
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1answer
102 views

Surge Protectors - Wall Outlet Plug vs. Stationary Surge Protector

While the former will cost 3 times less: The latter will cost more: Question: Are both almost the same or the latter is better (which i suppose is judging by price)?
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2answers
633 views

Is it okay to use a UPS without a ground?

I have a UPS unit that I would like to use for a workstation installation that does not have a valid ground (in the Philippines, a true ground is a luxury). I am not an Electrical Engineer, but I ...
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1answer
402 views

Using notebook batteries as a no-break (UPS) for a desktop

I have a notebook battery at home that became useless when my old notebook died (RIP). Can I use the battery in some way to implement something like a no-break (also known as UPS (Uninterruptible ...
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2answers
634 views

Does Laptop's Battery Condition Power When On AC?

I doubt about this, but still want to hear what others think. UPS condition power but does laptop's battery condition power?
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312 views

Using Laptop Battery And Surge Protector Instead Of UPS? [closed]

I was thinking of using battery and surge protector instead of UPS. With UPS you have to: Do checkups Ship for battery replacements i.e it is a hassle. With laptop battery you have nothing to ...
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4answers
209 views

Laptop Malfunctions After UPS Failure? I Have Got What I Deserved

My UPS failed today and laptop ceased working. UPS failed me before 1 time and it was when laptop was on standby but nothing happened to the laptop however. Also there were times when laptop was ...
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1answer
1k views

Is there a way to tell the laptop battery when to stop charging?

I don't want my laptop's battery to always be at 100% because it lessens battery life, especially when above 25 Celcius, the lowest summer temperature in Israel (currently 30C - 32C). I prefer to keep ...
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2answers
1k views

Internal UPS for desktop computers? [closed]

I was wondering, are there internal UPS'es available for desktop computers? Every laptop has something like a UPS in it: The battery pack. Desktop computers don't consume that much power, it should ...
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242 views

in-car server, avoid disk error when power interruption?

guys I have a low powered 1U server in my car which collect some data, but when I stop my car and remove my key, the power for the linux box will be cut immediately for the computer. And power back ...
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2answers
225 views

Is UPS wattage rating for battery backup outlets only?

I have a Back-UPS ES 550 from APC, and I'm wondering if that 550 wattage rating is for the battery backup side only or all outlets? It has 8 outlets. 4 that say battery backup, and 4 that say surge ...
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1answer
778 views

What happens if a Drobo experiences a power failure during a rebuild?

I recently purchased a Drobo and I was wondering, what happens to the Drobo if it's in the middle of a rebuild and there's a power failure? I know that the Drobo cannot protect against a disk failure ...
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491 views

Setting an APC SU700I UPS for PC hibernation after 2min of power outage? (APC UPS experienced user might be needed)

I have an APC SU700I UPS connected to my PC via a serial cable. I'm running Windows 7 x64, and Vmware Workstation on this PC. I'm using APC PowerChute Business Edition v8.0 web agent interface. The ...
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5answers
2k views

What to look for in a good UPS?

I just asked this question where my PC may have been fried due to a power surge. Now I'm browsing around and I'm curious what characteristics make a quality UPS? What should I be looking at? Should I ...
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2answers
637 views

Attaching LCD monitor to UPS - output waveform matters or not?

I've got a quite expensive LCD monitor (~$1000) and I wish to protect it from instabilities in the power line. So I intend to get a UPS for it. I see two types of UPS devices which differ on the ...
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1answer
258 views

UPS for PC: management and care

How should one care about UPS (do maintenance of UPS) for a home computer? I am asking because after one case where UPS was discharged fully (till it was empty), it now does not hold the power: it ...
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2answers
4k views

What is better for power problems, a UPS or a voltage regulator?

I live in a cheap flat filled with expensive, sensitive electronic devices. There is only one electric circuit for everything to plug in. Several times a day, the fridge's compressor wakes up, and ...
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2answers
661 views

UPS and Surge suppressors: what do joules mean?

I have been looking at UPS's and noticed that they usually have a joules rating much lower than what a relatively inexpensive $40 surge suppressor does. Does this mean that in the event of a surge ...
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3answers
263 views

Need UPS communication software for Ubuntu

I have a server that should have an energy backup. I want to use some UPS for this. How to make it can communicate with PC, so it can makes the PC shutdown automatically? Whats software for ...
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1answer
412 views

attach C14 male power 3-pin connector to 2-wire cord

I need to attach a C14 male connector to my 2-wire cord to get power from my UPS. should I ignore the middle pin on C14 and attach my 2 wires of my cord to left and right pins?
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150 views

Can a UPS give off an EM field capable of interfering with desktop components?

I own an APC Back-UPS ES 750; it's about 4 years old, and is the only major component remaining in a question that has been boggling me for the last 18 months. (Yep, I originally posted this question ...
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4answers
5k views

Should I use UPS with my laptop to extend the battery life?

I recently bought a new Vaio laptop which has a 4400 mAh battery. I will use it at home most of the time, and I have an unused uninterruptible power supply (UPS). Should I remove the battery and ...
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3answers
3k views

Why PC reboots when there’s a power failure even with UPS?

I've purchased a Line Interactive UPS 1200VA. It's supposed to give 8~20min backup (as written in the manual). This UPS has transfer time < 10ms. It works fine when the mains is active. But the ...