Dell K788N UPS 1000W Tower Backup Power Supply (NO POWER)

Dell K788N UPS 1000W Tower Backup Power Supply (NO POWER)


Jeff Got scammed a few times - Luckily he found SpenCertified!

The Dell K788N is a UPS tower backup system designed to protect your equipment from damage and data loss due to power outages. During an outage, this backup power supplies power long enough to save your files, close programs, and shut down equipment properly. It's the perfect power solution for offices and larger spaces where data is vital.

This particular system currently has no power, so it would be great to use for parts or a unique repair project.


Every function has been tested. We have determined all the issues with the device and have listed them in this description. This item is sold "as is,” so potential buyers should be aware that this product does not come with a warranty or any guarantee.

Cosmetic Condition: Very Good.

Functional Condition: Dead - no power. For parts or repair.


  • Dell K788N UPS 1000W Tower Backup Power Supply (NO POWER)

Other information about the Dell K788N

  • Buck and Boost voltage regulation that ensures regulated voltage to your load by correcting voltage fluctuations.
  • Start-on-battery capability for powering up the UPS even if utility power is not available.
  • Extended runtime with an optional External Battery Module (EBM) for 1000–1920W UPS models.
  • Two standard communication ports (USB and DB-9 serial port).
  • Optional Dell Network Management Card with enhanced communication capabilities for increased power protection and control.
  • Network transient protector that guards your network communications equipment from surges. 
  • Advanced power management with the Dell UPS Management Software for graceful shutdowns and power monitoring.
  • Sequential shutdown and load management through separate receptacle groups called load segments.
  • Firmware that is easily upgradable without a service call.
  • Input Voltage: 100/120V
  • Input Frequency: 50/60 Hzauto-sensing,±3 Hz
  • Maximum Input Current: 15A
  • Input Connector(s): IEC320-C14
  • Maximum Input Current per phase: 15A


  • 6.7" x 17.7" x 9.8" (Length x Width x Height)
  • Weight: 40 lbs


  • Made in China

Customer Reviews

Edward W.

Customer Since December 2017

I have always been impressed with the items I received even after a couple years they continue to work. This is the reason why I always keep returning as a customer.

Alexander W.

Customer Since March 2018

For the price I paid the quality was great and I use my 400 Disc cd changer everyday.


Customer Since July 2018

Very happy with what we got! I made the mistake of first getting this item from Amazon and received it not working at all... I will order from them again and highly recommend them to everyone!

John D

Customer Since August 2018

For a couple of years, I have been looking for a replacement for my Toshiba DVD Recorder that was starting to break down. I had placed four orders with Amazon....3 of the recorders did not work and had to be returned, the fourth order was canceled by the seller before shipping with no explanation. An internet search brought me to and I found a refurbished Toshiba recorder similar to the one I was using. Without high expectations, I placed another order with them. SpenCertified let me know when my order was placed and kept me fully updated during the shipping process. The recorder arrived in about 4 days (much quicker than I anticipated) and works perfectly. The box included the recorder, remote and users' manual and advertised. I am very satisfied with my experience with SpenCertified and plan to order additional equipment from them. I highly recommend them.


Customer Since May 2020

I was totally amazed with the speed of delivery for my order. Ordered on May 4 and received on May 8! It was very thoughtful of them to email me to offer assistance and to ensure I was happy with my purchase. Great Job!

Jan S

Customer Since March 2018

Being a senior who refuses to give up VCR'S, I was in a panic because my last one died and no one sells them anymore in CA. Luckily I discovered SpenCertified, and will never have to worry again. I can't begin to tell you how pleased I am with the fantastic service they provide. My sets arrived in a timely manner, extremely well wrapped and the friendly emails offering any help were appreciated. I will continue to do business with them in the future and plan to refer them to all my friends. Thank you, guys... YOU CAN BUY WITH CONFIDENCE.

Evelyn S.

Customer Since March 2018

When my beloved VCR died, I discovered new ones were not being manufactured as before. All my tapes, collected over many years - - lost!? All future recordings - - lost!? What to do? Then, I discovered SpenCertified. I was wary. Was this a scam? I was afraid. Would my purchase truly be guaranteed? I wanted, I NEEDED, a working VCR, so I made my order. The packaging was perfect, the VCR was even better than advertised, Spencer was extremely helpful. I am a very satisfied customer. 


Customer Since June 2018

I just got my vhs dvd player in the mail. I was so impressed how well they kept me informed about it. When i got it it was well packaged no problems. We hooked it up and works great. Thank you so much will do buisness again.

Clifford Escover

Customer Since May 2019

I searched the stores and then the web looking for a Bluray player w/ HDMI & RCA audio outputs ; they hadn’t made them in years Was quite a search ... then I found SpenCertified .. I purchased a refurbished LG BD 300, it came with all cables,owners manual and remote 😂😂 with batteries ! And looks brand new !I am extremely pleased. Highly recommend and we will be purchasing again when we need to find a hard to get item.