Try re-seating the batteries. I have actually missed the connector sockets before. When you slide the batteries out this time visually inspect the inside. Especially the connector sockets.

As a footnote... from looking at the picture it is dated. How old is this unit and how many times have you replaced the batteries. It looks old enough that it could indeed be that the unit is shot.

The batteries have been reseated and still the same. What does that symbol mean (the one that is lit)?

The unit was on site prior to me starting so its at least 4 yrs old.

Thanks

That it is putting out a pure sine wave. I was chatting with APC about it. Just the fact that it doesn't have the LED screen makes it really old. Not much you can do. I think it has reached the point that you need to get a new one. I will usually replace batteries maybe one time and find out at that point that the next time they are needed it is usually better to just buy a new one.

What red LED is lit? The one in the photo is green indicating online and doing double conversion. Any LEDs lit at the back? What happens if you put the old batteries back and did you byt them complete with canister?

Your APC UPS should have a dedicated serial cable bundled with it.

Connect the APC UPS with the serial cable with a computer and run hyperterminal software to connect to the APC UPS to recalibrate the battery.

If you do have the serial cable, I will locate my documentation for the above.

When I installed the new batteries, I noticed a black lead which looked like a serial cable coming out of the back of the device but I dont have anything with a serial cable and Im not onsite until the weekend to check.

Is there no way to recalibrate the unit via a combination of button pressing on the front panel?

If not then Im going to need the instructions to access via the serial cable Jackie Man.

That is for monitoring from the server and/or communication. That model is new enough that it should also offer USB. If you hook it via USB and download their Powerchute software you can re calibrate and test with their software bit I wouldn't hold my breath.

Either the UPS charging circuit has failed, or the batteries are bad.

You can check the voltage of each battery with a voltmeter.

I have recounterd a similar problem when my contracter replaced the battery for our APC Smart UPS 1500VA in year 2015.

New battery is installed but ups is not online. Googling result indicated I need a special serial cable (APC 66049). Luckily , I can locate one from the packaging stuff which comes with the UPS in year 2005 and I could try the fix.

Don't get your hope up too high SycamoreIT. There comes a time.......

Just in case if you can find the APC serial cable (other serial cable cannot do)... try the procedure below.

" In order to reset the battery constant, we suggest that this is done through a HyperTerminal session.
Please do not enter any other characters via HyperTerminal other than that described in these instructions because this can cause irreparable damage to the UPS.

In order to successfully reset the battery constant, all accompanying devices (SmartSlot Accessories such as Interface Expander, Web/SNMP Management Card) must be removed from the SmartSlot or from the Com port of the UPS.

Please shut off all connected load, switch off the UPS, pull the power plug of the UPS.
Switch off the UPS once again till you hear a click.
Remove all accompanying devices.
Turn on the UPS again and connect a computer with Windows 95/98/ME, Windows NT 4.0 or Win 2000, which runs on Hyperterminal using one of the cables mentioned under the requirements.
Close Powerchute plus-Server. With Windows NT/2000, the UPS service must be stopped. If you are using PowerChute Business Edition, stop the Agent *V service.
Perform a Battery Constants check.
Start a Hyperterminal session with the UPS.
Note: Ensure that there are no accessories plugged into the UPS. (Web Management cards, IO Relay cards etc)
Start Hyperterminal by going to Start, Programs, Accessories, Communications, Hyperterminal.
You will be requested to enter a name and a symbol. Enter a favourite name and click on OK. When a message that a modem must be installed appears, you can ignore this message.
Select the serial port to which black serial cable is connected to.
The correct settings for the COM-connection are 2400 Baud, 8 data bits, 1 Stop bit, no parity, protocol Xon/Xoff. In this window, click on Advanced and make sure that the option FIFO activated is unchecked. Click twice on OK.
Check if there is a connection (Type Shift + Y, should return **SM** )
Do not enter any other characters via Hyperterminal other than that described in these instructions because this can cause irreparable damage to the UPS
Type **1**, wait 2-3 secs and type **1** again (Should return **Prog**)
Enter a **0** and the UPS reports the present value of the battery constant.
If this value does not correspond to the default value that was given to you by RM Support or APC , it must be changed.
If this value is not correct, press **+** or **-** until the correct value is returned.
Press **R** to close the session. (Should return **Bye**)
Enter **<Shift> Y**, the UPS reports again with **SM**.
Enter **0** once again and check if the UPS reports back the standard setting that has been set.
Close Hyperterminal, start the UPS again and check the UPS runtime in the management software."

Source: http://support.rm.com/TechnicalArticle.asp?cref=TEC817072

Ok update.

When i inserted the batteries on the weekend, the APC once powered up was emitting a beep once a minute. I suspected this was because the batteries where not fully charge or the previous fault still existed. Ive since had someone on site check the device for any audio warnings and also to take another picture of the front panel and it seems things have changed for the better. The only led which is red now is the bottom right battery LED which might suggest one of the batteries are not plugged in correctly. All other lights are showing green so I think we might be gettting somewhere?

Check out the attachement.

Ta
SycamoreIT
apc2.JPG

Too much glare on the picture. All LEDs look lit. You to-date you have just re-seated the batteries a second time?

Not re-seated the batteries a second time yet but can confirm all LEDS are Green apart from the bottom right battery LED which is RED.

So you have done nothing to this since re-seating the batteries one and today it decides to light up like a Christmas Tree?

After installing the batteries on the weekend, the device was beeping once and none of the lights apart from the Sinwave light was lit (red) and a beeping was coming from the device. I left until today and then took the last picture attached and had confirmation the device was no longer beeping.

Does yours look like mine?

Have a guess whether it is working or not?

Yep, looks exactly like mine - working?

Does APC Powerchut detects your UPS?
Of course, you need to connect your UPS to server using a USB cable.

No.

Your guess is wrong.

It is the status before hyperterminal correction.

Im not able to check since there no powerchute software on any of the servers so Im going to have to return to site and connect a laptop and download the software. Will the software run on W10?

It is the working status.

Ah right, ok will have to return this weekend and hook up the APC to the server via a serial cable (providing my servers have serial ports).

Darn it!

see images below

so the led with the battery and a X in the middle is Green and the only RED led is the one with a seesaw icon underneath it - everything else is GREEN?

Correct

So need to recalibrate the unit via Hyperterminal rather than connecting the device to my laptop via a USB cable and doing the same via powerchute?

Powerchut will not function as it will detect the battery level is zero.

You need hyperterminal to fix it.

Ok, thanks Jackie Man. Will look to get one of those cables now.

I used Powerchut to find out the problem, call the contractor but no fix or advice.

Then, Google and try to fix on my own.

Powerchut can only calibrate if the battery constance is correct.

My wild guess is that the UPS just stuck with a zero battery constance on prolong malfunctioned battery inside.

On put back of new battery, the UPS still thinks that it has zero battery constance despite that the battery is fully charged as shown the right power level bar.

So, the UPS will be useless if you do not fix it.

It took me two days to find a solution and fix it and the contractor did call me for advice on how I fixed the problem as they encountered the same problem like mine very soon after my problem.

ok, will revisit site and have another stab at this on the weekend - thanks for your all your advice so far.

What's your APC UPS telling you?

https://youtu.be/coFMmOBL2Ec

Have a look of the above video if you are free.

In short, if the lower right LED is in red colour, it means that you have to replace battery. But, the irony is that you have already replaced the battery as the right power bar is full.

Lead-acid batteries do fail on the shelf, they discharge at about 3% per month and should never be allowed to go completely flat. Is there a date stamp on the batteries or canister?

Whilst on site on the weekend, I didnt notice a serial lead already connected to the UPS - attached is a picture of the lead which differs from Jackie Man picture above. Is it possible the UPC has been accessed previously via this lead to recalibrate the UPS?
apc3.JPG

Yes.

It is the serial cable bundled with your UPS.

You can use it.

Ok great - looks like this weekend recalibration is on for me!

You can use a notebook with serial port to do the calibration. Not necessary to use your server.

notebook doesnt have a serial - gonna have to use the server me thinks.

Ok, got connected to the UPS via the serial cable and I type Shift Y and it returned SM but when i type **1** each time I pressed * i got NA returned. So I was not able to do anything further. When setting up the hyperterminal session, I was not able to select Advanced to check the FIFO settings but not sure if that makes a difference anyway since I was get SM returned whilst connected so it seems to suggest Im connected to the UPS.

Also, now that Im on site, I can confirm the following.
The device is beeping once a second and the a red led with a battery with an X in the middle is lit (see attached).

Also, if the hyperterminal did return **Prog**, Im none the wiser what my battery constant should be - how do I know what that is, does something already know by chance?
apc4.JPG

Your photo indicates that you still have a problem.

Do you put any load on the UPS? No load must be put on UPS.

Have a look of the link below to check whether your procedure is correct.

http://osdir.com/ml/monitoring.nut.user/2007-01/msg00120.html

If the battery is charging properly, the bar on the right shoud not be empty. Empty means no battery.

Also, if you are connecting to the UPS from your server, make sure that your powerchut agent software has been uninstalled.

When I power up the device, the battery level indicates on the right show full charge. Also, Im connecting using a desktop PC not the server so no powerchute software/services running. Also, can confirm there is no load on the UPS.

I retried the hyperterminal session and was able to get into the PROG mode and my battery constant  is 31, any idea what it should be?

If still no go, try apcfix.exe to solve do the recalibration.

http://asavage.dyndns.org/ftp/Drivers/APC/

http://apc-fix.com/articles/187

ok, Ive downloade the exe and Ive ran it, its connected to the UPS and the beeping as stopped adnd everything looks ok. The front of the UPS looks good as well so Im going to put a load on it and see if it holds.

It is better to install the Powerchut software and attach the ups to your server using a USB cable and do a self test of the UPS and do a runtime calibration before you do the loading test.

Im going to have to return again to site with a usb lead to carry out that process. Where can I get the correct powerchute software from?

https://www.apc.com/us/en/tools/download/software_comp.cfm?sw_sku=SFPCBE911&id=125&swfam=125

Select according to the OS of your server.

Besides, a standard usb printer cable will do.

Do I need drivers or anything for the powechute to work? Ive downloaded powerchute personal edition on my laptop (w10) and found a usb lead, connected it up but the powechute software complains there is no UPS connected.

You need business edition.

Also post back the photo of the current status of ups front panel.

Despite your best efforts, the APC has now died so we have ordered a new one.

Don't get your hope up too high SycamoreIT. There comes a time.......