I have a Powerware 5125 that I just replaced the batteries on. Now I get NO power to the unit when trying to turn the unit on. I put the original batteries back in and the same thing is happening. All the cables were put on the new batteries in the correct order.

check if battery is connected or not

https://eaton-upssystems.com/services/

This unit has been replaced by the 9130. It is possible that the original power cell is low in power or not charging to full capacity.

This could be several things, fortunately the device should actually be helping you to diagnose the issue. There are different beeps for different issues. They are as follows:

1 Beep Every 5 Seconds = Power Outage\Loose Plug Connection\Tripped Circuit Breaker\Power Cord Damage or Failure

2 Beeps Every 5 Seconds = Low Battery Alarm

3 Beeps Every 5 Seconds = Battery Needs Charging\Service\Replacement

3 Beeps Every 5 Minutes = The Battery is discharged and battery power is unavailable (If this continues battery replacement may be necessary)

1 Beep Ever 1/2 Second = Power Requirements exceed the UPS Capacity (remove some equipment to lighten the load on the unit)

Continuous Beep = Short Circuit / Input Voltage out of Range / UPS Fault (Likely replacement of entire unit)

That should help diagnose the actual issue. If it turns out the battery needs to be replaced they can be found online for around $20. A simple google search for Powerware 3110 Battery should return what you're after. Good luck!

The LEDs are actually indicating the amount of load on the UPS and only indicate battery charge level when running on battery power. You can email [email protected] if you'd like to follow up.

Try contacting Eaton. They bought Powerware about 6 years ago and the personnel are trained on older Powerware systems. If you have the part number and serial number from the rating label on the UPS, that would be helpful.

Toll Free: 1 800 356 5737
E-mail: [email protected]

Have you checked the user manual? http://powerquality.eaton.com/Products-services/Backup-Power-UPS/5125.aspx?cx=3 Could be an alarm letting you know that the battery is dead.

There may be a reason. Too much current draw.
I would recommend to get a better brand UPS.

plug it in

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Batteries are the most critical component in the reliability of any UPS, but they face three fundamental challenges: All Batteries Need Charging
But extended charging significantly shortens battery life. Most batteries are charged with a trickle-charging process (a constant voltage feeding a low current to the battery). This method dries the electrolyte and corrodes the plates, reducing potential life by up to 50%.
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The question isn’t “Will it happen?” but “When will it happen?” Because UPS batteries are valve-regulated, sealed lead acid, there has previously been no practical way to provide the user with any meaningful advance notice that batteries need to be replaced. In the past, the only way to know when the batteries were dead was when the power failed and took your computer down with it. Until now, typical UPS batteries have required replacement every two to three years.
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Hi,

After you replaced the batteries did you perform a manual battery test?

If not do so.

Regards
Alan Hood
ami-man
UK