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Re: HP T750 G2 UPS (Uninterruptible power supply) doesn't work properly

Occasional Contributor

HP T750 G2 UPS (Uninterruptible power supply) doesn't work properly

Dear forum members!

I have a problem with my HP T750 G2 UPS (Uninterruptible power supply).

In case of a power failure, the UPS shutdown from battery mode after a few seconds or a half minute, maximum a few minutes.

The battery is alright (bought a few years ago) and has a capacity of 90% with approximately 150 minutes (without attached devices).

I tried it with a simple 25 W lamp and after I cut the power line, the UPS shutdown a few seconds later and the lamp is off.

Do I have to configure the UPS or what is wrong?


Re: HP T750 G2 UPS (Uninterruptible power supply) doesn't work properly


I hope the below links will help you.

Title: HP Rackmount Uninterruptible Power System - HP UPS Network Module: Configuring Shutdown Parameters for the Load Segments

If you feel this was helpful please click the KUDOS! thumb below!


I am a HPE Employee

Accept or Kudo

Occasional Contributor

Re: HP T750 G2 UPS (Uninterruptible power supply) doesn't work properly

Thank you for the answer.


I have configured the UPS with the HP PowerManager:




Unfortunately the problem still exists.

I don't understand why the UPS shuts down with a 25W lamp attached after a few seconds?


I also tried a power failure without attached devices. Only with connection to the computer via USB. After about 5 minutes, the UPS gets in critical battery mode and then shuts down after a few more minutes.

Here's the log from the HP Power Manager:

Event Logs,07/18/2021 - 07/18/2021
Information,<b> The UPS batteries are not fully charged. The UPS has started charging batteries.</b> ,July 18 2021,20:51:56
Critical,The UPS is in a low battery condition.,July 18 2021,20:42:14
Normal,UPS battery charge is normal.,July 18 2021,20:37:55
Warning,The UPS is on battery.,July 18 2021,20:37:55
Warning,Input voltage is out of range.,July 18 2021,20:37:55


I don't understand why the UPS switch itself off after about 10 minutes without attaced devices, although it was fully loaded before the simulated power failure. After I attach it after power failure to the computer via USB, it says about 85% battery capacity.