0
votes
0answers
31 views

UPS battery replacement

For the UPS model Niky 900 by Daker, I'd like to replace the original CBS HR1234W F2 battery with something I can buy on amazon.it, e.g. FIAMM models: could you suggest what are the relevant ...
1
vote
0answers
14 views

What depth of discharge does 0% in a UPS correspond to?

When a UPS like an APC Smart-UPS shows 0% charge remaining, does it mean the deep-cycle batteries are completely discharged or that they're at 20%?
0
votes
0answers
29 views

Would intermittent contact with the service voltage and capacitors in a power supply (inrush current) damage a computer?

If I plugged my laptop AC Adapter power cable into a UPS, causing sparks to blast out (and being unable to insert it due to the UPS being seemingly not designed for this type of plug, for whatever ...
6
votes
2answers
203 views

UPS - practical maintenance advices to help end-user keeping batteries (classic lead acid models) in good shape

I have read that most (maybe all?) UPS devices for personal computing have lead-acid batteries inside. As long as its chemistry, compared to lithium-ion, is very different, I would like to know ...
1
vote
0answers
15 views

Using Perl to communicate with Nut

I'm trying to communicate with my UPS that's managed using NUT. I want to read values from it like line voltage, battery charge, etc. I don't want to send it commands to shut it down. At first I was ...
3
votes
8answers
2k views

How to determine what size backup power equipment is needed?

I want to have an optimum continuous supply for my small office for 6hours, which includes, a laptop (AsusG73SW-> 8Cells : 5200 mAh 74 Whrs; Output : 19 V DC, 6.3 A, 150 W; Input: 100-240 V AC, 50/60 ...
1
vote
2answers
159 views

APC Back-UPS overload

I contacted APC to ask this question, but it has been 5 days with no response. My question is simple: I have an APC Back-UPS ES 750 (450 watts), but let's say I want to plug something that draws more ...
5
votes
3answers
1k views

Is my UPS battery dead or is my UPS broken?

When the lights went out today I noticed my UPS battery didn't work. I checked the monitor and this is what I see: As you can see it says the battery has 90% but when I pull the plug, it doesn't ...
1
vote
0answers
97 views

Line Interactive UPS battery maintenance

I am going to buy a Line Interactive UPS (around 600VA/360W with one 12V/7AH Lead Acid battery - probably PowerWalker VI 650 LCD, or Cyberpower Value 600ELCD, or any other...) for my PC needs, and ...
3
votes
4answers
1k views

Radiation from a UPS

In our office, there are frequent eletric shortages that harm my desktop computer, so I wanted to install a UPS. However, my office-mates pointed me to papers talking about hazardous radiation from ...
4
votes
3answers
1k views

System connected to UPS goes to sleep short time after power is lost

I have a Win7 x64 system connected to the UPS. The UPS is capable of maintaining the system power for about 30 minutes. After I have connected the UPS, I have verified this by disconnecting the power ...
0
votes
1answer
245 views

Using a laptop without battery [duplicate]

Possible Duplicate: Are notebook batteries generally hot-swappable? My battery is at 50% wear and I was planning to use it on AC without the battery. I was planning to use an on-line UPS so ...
5
votes
4answers
3k 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 ...
3
votes
3answers
487 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 ...
4
votes
3answers
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 ...
2
votes
3answers
3k 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 ...
1
vote
1answer
441 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 ...
1
vote
2answers
710 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?
1
vote
2answers
336 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 ...
2
votes
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 ...
1
vote
2answers
753 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 ...
6
votes
4answers
6k 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 ...
3
votes
1answer
548 views

APC UPS will not work with Vista

So I bought an APC UPS BE550G the other day, I plug it in, it works fine, I can unplug it the battery keeps my computer going. Fine. What does not work is the software (or any other software that I ...
4
votes
2answers
13k views

What's the best UPS unit for a home PC [closed]

I recently moved into a new house, and it seems that every time there's an electrical storm, the power will blink on and off quite frequently. I was thinking of getting a UPS (Uninterruptible power ...
18
votes
8answers
773 views

Is a UPS a good investment for a home machine?

Is it worth the money to invest in a battery-backed UPS unit for a home machine? Or is it a waste of money? The purpose of the UPS would be to prevent a "meltdown" of the computer due to bad power ...
15
votes
4answers
5k views

Can I run a computer using DC power?

I always thought that using a conventional UPS with a PC is highly inefficient. Power goes from AC -> DC -> AC in UPS and then AC -> DC in PC SMPS. Since PC works only with DC (12, 5 and 3 volts) It ...