jonnyGURU Forums
Home Site Search Reviews Articles Contest Links PSU FAQs  


Go Back   jonnyGURU Forums > Computer Hardware > General PC Hardware

General PC Hardware Troubleshooting and discussion of any computer hardware. Includes UPS's and monitors.

Reply
 
Thread Tools Display Modes
  #21  
Old 12-05-2014
ehume's Avatar
ehume ehume is offline
Flux Capacitor User
 
Join Date: Sep 2010
Location: New Jersey, USA
Posts: 1,072
Thanks: 771
Thanked 96 Times in 83 Posts
Default

Fascinating info. And how do you know when it is time to replace the batteries?
__________________
open air testing rig in basement:
Core i7 8700k 5GHz Vcore = 1.37v, HT enabled; Gigabyte Z370X Aorus Gaming 7
2x8GB Corsair DPX DDR4 RAM 16-18-18-36@3200MHz Vdimm 1.35v
Intel 4600 graphics using 1GB system memory; Samsung 840 EVO 500GB
various heatsinks (depends on what I am testing ATM); PSU: Seasonic X-460FL (fanless)
Reply With Quote
  #22  
Old 12-05-2014
Digerati Digerati is offline
Banned
 
Join Date: Jan 2011
Location: Nebraska, USA
Posts: 501
Thanks: 3
Thanked 59 Times in 55 Posts
Default

Quote:
Fascinating info. And how do you know when it is time to replace the batteries?
Good question. Typically it is when the power goes out and your system crashes because the batteries don't hold.

If you are lucky, you will notice instead of having 30+ minutes, you have less and less until you don't even have enough time to gracefully exit your programs and manually shut down.

APC provides PowerChute - it's monitoring software that lets you run self-tests and lets you monitor run times so you can keep track. But generally, it is up to you to remember when 3 years is up.

I have two lamps with 150 lightbulbs I plug into my UPS, then pull the UPS plug from the wall and see what happens.

If the battery shorts (instead of just wearing out), some UPS will have a fault LED.

Quote:
Quote:
That UPS uses two 12V 7AH batteries.
How do you know this. On the manufacturers website in specification section the 12VDC, 7ampere hours are not specified and the battery pack just cannot be found on Google I searched.
If you visit a battery site, many have wizards where you punch in the brand and model and they tell you. Or you might see if you can download the manual. Or just wait until they fail then open it up and look.
Reply With Quote
The Following User Says Thank You to Digerati For This Useful Post:
ehume (12-05-2014)
  #23  
Old 12-05-2014
cheapie's Avatar
cheapie cheapie is offline
That weird furry girl they warned you about
 
Join Date: Sep 2013
Location: Earth, I think
Posts: 302
Thanks: 22
Thanked 78 Times in 50 Posts
Default

Quote:
Originally Posted by Digerati View Post
A "good" UPS with AVR will help shape (regulate) the sine wave into something more easily used by the devices plugged into it. In low voltage events, it will use the batteries to boost the voltage up to normal levels, and in extreme high voltage events, it will use the batteries to dump the excess voltage (which batteries can absorb with ease), and/or dump the excess to ground (Earth).
AVR in most (probably all) UPSes doesn't even touch the battery. Instead, they use an autotransformer with multiple taps to change the voltage (similar principle to a variac). This image (also in the article linked earlier) shows a "4 buck, 1 boost" configuration, with the first "buck" position currently selected. Most UPSes don't have this many. For example, my Tripp Lite SMART1500LCDT has 1 "buck" and 1 "boost" tap (in addition to the "normal" position).
Reply With Quote
  #24  
Old 12-05-2014
Serious Sam's Avatar
Serious Sam Serious Sam is offline
Seriously Serious!
 
Join Date: Aug 2011
Location: Lahore, Pakistan.
Posts: 37
Thanks: 3
Thanked 1 Time in 1 Post
Default

Batteries lasting 7 years?. Really?.

After half a year, they lose nearly half of their capacity, at least under my usage/in my country.

2 years and they are no good and it is time to change. I dont see them storing any amount of power at year 3/4, let alone year 7. lol

Talking about lead acid. Sealed wont defy the laws of chemistry either. May last a bit long but are extremely expensive!.
__________________
Case: CM Elite 334.
PSU: Corsair CX 430.

Motherboard: Asus P8H67-M LE.
Optical Drive: HP 1270i.
CPU/HSF: Intel Core i5-3570/CM Hyper 212 Plus.
Ram: 2x4gB Corsair VS.

HDD: 180gB Intel SSD 330 Series, WD Blue 500gB (AAKX).

GPU: EVGA GTX 660 FTW Signature 2.
Monitor: Samsung BX2031.
Mouse/Keyboard: Razer Abyssus Mirror Special Edition/X7 G800.
Mousepad: Razer Vespula ME3 edition.
Reply With Quote
  #25  
Old 12-06-2014
Digerati Digerati is offline
Banned
 
Join Date: Jan 2011
Location: Nebraska, USA
Posts: 501
Thanks: 3
Thanked 59 Times in 55 Posts
Default

Quote:
AVR in most (probably all) UPSes doesn't even touch the battery.
Not "all" UPS.

With some UPS, the batteries are used to (absorb) excess voltages because they are very tolerant of that. This is often necessary with "floating" or "isolated" ground applications where the excess voltages cannot be "shunted" to Earth ground. In avionics, it is typical. And on MANY UPS, when the voltage sags (brownouts), but not enough to fully cut-over to battery backup, the batteries are frequently used to boost the voltage back up to normal.

Yes, the use of autotransformers are common too. But not always.

That said, I should have been more clear and not imply that "all" (even of the "good") use the batteries in that way.

Quote:
Talking about lead acid. Sealed wont defy the laws of chemistry either. May last a bit long but are extremely expensive!.
Not sure the point. Except for the 10 year Lithium Ions, we are only talking about sealed lead acid (SLA) batteries, as used in UPS. And the point of them being sealed is so user don't have to worry about leaking and adding fluids, and fumes - not about their internal chemistries.

As far as your power in Pakistan, I might suggest you look at your mains (hire a certified electrician if necessary) and make sure your facility is properly wired and most important, has a good, solid, Earth ground - especially to your wall outlets feeding your computer. Consider a whole house suppression system to block excessive surges and spike coming off the grid. The cleaner the power coming into the UPS, the less it (and the batteries) have to work cleaning it up.
Reply With Quote
  #26  
Old 12-06-2014
jonnyGURU's Avatar
jonnyGURU jonnyGURU is online now
Site Founder
 
Join Date: Oct 2006
Location: jonnyGURU forums, of course!
Posts: 14,339
Thanks: 444
Thanked 1,655 Times in 1,028 Posts
Default

Quote:
Originally Posted by Captain rainbow View Post
How do you know this. On the manufacturers website in specification section the 12VDC, 7ampere hours are not specified and the battery pack just cannot be found on Google I searched.
http://eu.cyberpowersystems.com/prod...300epfclcd.htm

Click on the "specs" tab and scroll down to "batteries".

It's the same battery all the UPSs in my house use. I buy them off eBay for $10 to $15 a pop. Amazon for $20.
__________________
Rest in peace Mike Clements, aka "Yellowbeard"

Rest in peace Joerg Theissen, aka "GI Joe"
Reply With Quote
The Following User Says Thank You to jonnyGURU For This Useful Post:
Captain rainbow (12-06-2014)
  #27  
Old 12-06-2014
Captain rainbow Captain rainbow is offline
500W User
 
Join Date: Sep 2014
Posts: 73
Thanks: 27
Thanked 0 Times in 0 Posts
Default

Great now I can go ahead and buy the UPS. I was really bothered about the batteries. Thank You very much for the help.

Last edited by Captain rainbow; 12-06-2014 at 04:35 PM.
Reply With Quote
  #28  
Old 12-08-2014
Serious Sam's Avatar
Serious Sam Serious Sam is offline
Seriously Serious!
 
Join Date: Aug 2011
Location: Lahore, Pakistan.
Posts: 37
Thanks: 3
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by Digerati View Post

As far as your power in Pakistan, I might suggest you look at your mains (hire a certified electrician if necessary) and make sure your facility is properly wired and most important, has a good, solid, Earth ground - especially to your wall outlets feeding your computer. Consider a whole house suppression system to block excessive surges and spike coming off the grid. The cleaner the power coming into the UPS, the less it (and the batteries) have to work cleaning it up.
Thanks but no thanks. I dont need to hire anyone. I have a brain that has a keen interest in these sort of things.
__________________
Case: CM Elite 334.
PSU: Corsair CX 430.

Motherboard: Asus P8H67-M LE.
Optical Drive: HP 1270i.
CPU/HSF: Intel Core i5-3570/CM Hyper 212 Plus.
Ram: 2x4gB Corsair VS.

HDD: 180gB Intel SSD 330 Series, WD Blue 500gB (AAKX).

GPU: EVGA GTX 660 FTW Signature 2.
Monitor: Samsung BX2031.
Mouse/Keyboard: Razer Abyssus Mirror Special Edition/X7 G800.
Mousepad: Razer Vespula ME3 edition.
Reply With Quote
  #29  
Old 12-09-2014
Digerati Digerati is offline
Banned
 
Join Date: Jan 2011
Location: Nebraska, USA
Posts: 501
Thanks: 3
Thanked 59 Times in 55 Posts
Default

Quote:
Thanks but no thanks. I dont need to hire anyone. I have a brain that has a keen interest in these sort of things.
Then exercise your brain and clean up the power coming in. You can't do much about full outages, but full outages don't prematurely take out batteries.

I recommend you start by borrowing a good "megger" (Earth ground tester) and see how well your facility, then each outlet is grounded.

Also note by hiring a certified professional, he or she is responsible for doing it right. That's important in terms of liability should something go wrong and someone gets hurt, or there's a fire.
Reply With Quote
  #30  
Old 12-09-2014
Serious Sam's Avatar
Serious Sam Serious Sam is offline
Seriously Serious!
 
Join Date: Aug 2011
Location: Lahore, Pakistan.
Posts: 37
Thanks: 3
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by Digerati View Post
Then exercise your brain and clean up the power coming in. You can't do much about full outages, but full outages don't prematurely take out batteries.

I recommend you start by borrowing a good "megger" (Earth ground tester) and see how well your facility, then each outlet is grounded.

Also note by hiring a certified professional, he or she is responsible for doing it right. That's important in terms of liability should something go wrong and someone gets hurt, or there's a fire.
Ok. I'll make sure I take some shampoo and soap and clean the power coming in.

To OP, my answer is, no, they wont.
__________________
Case: CM Elite 334.
PSU: Corsair CX 430.

Motherboard: Asus P8H67-M LE.
Optical Drive: HP 1270i.
CPU/HSF: Intel Core i5-3570/CM Hyper 212 Plus.
Ram: 2x4gB Corsair VS.

HDD: 180gB Intel SSD 330 Series, WD Blue 500gB (AAKX).

GPU: EVGA GTX 660 FTW Signature 2.
Monitor: Samsung BX2031.
Mouse/Keyboard: Razer Abyssus Mirror Special Edition/X7 G800.
Mousepad: Razer Vespula ME3 edition.

Last edited by Serious Sam; 12-09-2014 at 11:51 PM.
Reply With Quote
The Following User Says Thank You to Serious Sam For This Useful Post:
mdk777 (12-10-2014)
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:45 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright © JonnyGURU.com 2000 -