Skip to contentGo to Product Search
Gift Ideas
Main Content

Customer Ratings & Reviews

No content
  • Front. CyberPower - 650VA Battery Back-Up System - Black.
  • Alt View 11. CyberPower - 650VA Battery Back-Up System - Black.
  • Alt View 12. CyberPower - 650VA Battery Back-Up System - Black.
  • Alt View 13. CyberPower - 650VA Battery Back-Up System - Black.
  • Alt View 14. CyberPower - 650VA Battery Back-Up System - Black.

CyberPower - 650VA Battery Back-Up System - Black

Model:
SX650U
SKU:
10629453
Loading...

Customer reviews

Rating 4.7 out of 5 stars with 1791 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.6 out of 5 stars

  • Quality

    Rating 4.7 out of 5 stars

  • Ease of Use

    Rating 4.8 out of 5 stars

95%
would recommend
to a friend
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 67 Showing 1,321-1,340 of 1,791 reviews

  • Great product and excellent price!

    |
    |
    Posted . Owned for 5 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great product and excellent price. Additionally, Best Buy staff are very helpful. Thank you!

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Great backup for sewing macines

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Wouldn't do without this on my Husqvarna Viking Epic2 Embroidery machine. If power goes out, I can keep on sewing!!!

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Great System

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great System, I mean its a battery back up. There really isnt much that will make it better or worse than another model

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Great battery backup for a PC

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a great little battery backup for a PC. I like the newer design compared to ones in the past. It functions as it is supposed to function!

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • So far so good

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Have it plugged in and all is good so far. I haven't had a power outage yet so I have no idea how well it works.

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Battery Backup

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    My old one stopped working bettervalue buying new rather than replacing battery this one has a 3 year warranty

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Great for small office

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I needed this for an added work station in the warehouse and it works great for a single computer setup.

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Necessary

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works well a replacement for the same mode that quit after six years.

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Works!!!

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works exactly as advertised. During power loss I still had phone and internet

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Good value

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Worked fine. Latest driver did not want to install on Win 7, but prior version worked.

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • awesome PSU

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    great back-up worth the price. The free monitoring software gives you a lot of details/monitoring of PC usage

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Everyone needs a battery

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Why not go with the three year warranty from a great product. Other brands are more expensive and not as good a warranty.

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Plenty of plugs

    |
    |
    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Plenty of plugs to plug in those valuable items so they don't get shorted out.

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Good

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Battery backup for my critical electronics. Wish I had bought 1500 VA system, but this works good. Recommend the 2 plug 6" extension cord because some power supplies eat up two or three outlets

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • More than adequate

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    For a small to moderate system the CyberPower is more than adequate to keep the system up so an orderly shut down can be accomplished.

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Battery Back up

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    So far no issues with this, and I was glad it had the extra USB slots to change my mobile device

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Peace of Mind Power

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great quality and fair price! Not sure why the review need 50 characters but here ya go.

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Plenty of power plugs

    |
    |
    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great product. Purchased on sale. Has plenty of power plugs and spaced out enough so no issues.

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Perfect for home workstation

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Perfect for my needs. I have my home desktop PC, modem, router speakers and Play Station connected to this UPS.

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend

  • Great product

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a really great product. I have no complaints about this.

    This review is from CyberPower - 650VA Battery Back-Up System - Black

    I would recommend this to a friend
Page 67, Showing 1,321-1,340 of 1,791 reviews
Sign in or Create Account

Get the latest deals and more.

Best Buy appLearn more
Share on YouTubeShare on InstagramShare on TikTokShare on FacebookShare on PinterestShare on X
Best Buy Canada
AccessibilityTerms & ConditionsPrivacyInterest-Based AdsState Privacy RightsHealth Data PrivacyDo Not Sell/Share My Personal InformationLimit Use of My Sensitive Personal InformationTargeted Advertising Opt OutCA Supply Chain Transparency Act
In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.