The seller is away until Jul 07, 2025. If you buy this item, expect a delay in shipping.

CyberPower ST900U Uninterrupted Power Backup | 900VA/500W 12 Outlets/2 USB Ports

OneOffStuff
(3149)
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US $48.88/ea
or Best Offer
Condition:
Used
“SEE VIDEO -- tested OK as WORKING -- Battery is INCLUDED -- very good used condition from a working ”... Read moreabout condition
More than 10 available145 sold
Bulk savings quantity 1
Bulk savings:
Buy 4 or more for 44.48 each one

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This one's trending. 145 have already sold.
People want this. 139 people are watching this.
Shipping:
Free Economy Shipping.
Located in: Orlando, Florida, United States
Delivery:
Estimated between Thu, Jul 10 and Thu, Jul 17 to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
Seller does not accept returns.
Payments:
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eBay item number:196967986504
Last updated on Jun 23, 2025 15:32:50 PDTView all revisionsView all revisions

Item specifics

Condition
Used
An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitionsopens in a new window or tab
Seller Notes
“SEE VIDEO -- tested OK as WORKING -- Battery is INCLUDED -- very good used condition from a working ...
MPN
ST900U
Maximum Input Current
See Mfg Specs
Item Length
See Mfg Specs
Form Factor
See Mfg Specs
Maximum Power
500 W
Maximum Wattage
500 W
Manufacturer Warranty
None
Item Height
See Mfg Specs
Battery
INCLUDED
Number of Outlets
12
Features
LED Display, Surge Protection
Item Width
See Mfg Specs
Voltage Compatibility
900 VA
Compatible Brand
For CyberPower
Cooling
Passive Cooling
Color
Black
Compatible Model
ST900U
Brand
CyberPower
Connectors
See Pics
Type
Battery
Surge Energy Capacity
See Mfg Specs
Model
ST900U
Country/Region of Manufacture
Philippines
UPC
Not Applicable

Item description from the seller

About this seller

OneOffStuff

100% positive feedback•6.1K items sold

Joined Feb 2002
Usually responds within 24 hours
Eclectic opportunities for the discriminating Buyer!
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Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

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Seller feedback (2,384)

All ratings
Positive
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Negative
  • *****- Feedback left by buyer.
    Past 6 months
    Verified purchase
    In the condition outline in the listing, functions to spec, amazing price!
    Reply from: oneoffstuff- Feedback replied by seller oneoffstuff.- Feedback replied by seller oneoffstuff.
    Great to hear! Enjoy! Thanks for your business! 😊👍
  • *****- Feedback left by buyer.
    Past month
    Verified purchase
    ★★★★★★ ~ § ~~ § ~~ § ~ AWESOME! 6 Star Service! ~ § ~~ § ~~ § ~ ★★★★★★ FedEX delivered to wrong address - neighbor brought it over
    Reply from: oneoffstuff- Feedback replied by seller oneoffstuff.- Feedback replied by seller oneoffstuff.
    Great to hear! Enjoy! Thanks for your business! 😊👍
  • *****- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Appears to be excellent quality, works flawlessly. Fast shipping.
    Reply from: oneoffstuff- Feedback replied by seller oneoffstuff.- Feedback replied by seller oneoffstuff.
    Great to hear! Enjoy! Thanks for your business! 😊👍
See all feedback

Product ratings and reviews

Learn more
4.0
4 product ratings
  • 3 users rated this 5 out of 5 stars
  • 0 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 1 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 4 reviews
  • by catman3*123
    May 23, 2019

    Great product..!

    Perfect replacement for my old and nonfunctional UPS..works perfect..!

    Verified purchase: YesCondition: NewSold by: adorama

  • by agrogers2001
    Feb 05, 2020

    CYBERPOWER ST900U

    Been using Cyberpower items for years. Never a glitch. Hope to continue for years to come.

    Verified purchase: YesCondition: NewSold by: newegg

  • by joecool813
    May 11, 2020

    Hums Loud - Very Unhappy

    This is the loudest humming sound making UPS I have ever had.

    Verified purchase: YesCondition: NewSold by: nothingbutsavings

  • by edwin_mack
    Jul 01, 2025

    Works great. Good buy....

    Works great. Good buy.

    Verified purchase: YesCondition: Pre-OwnedSold by: oneoffstuff

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