Memorial Day SaleEnds 5/25. Limited quantities. No rainchecks.Shop now

Skip to contentGo to Product Search
Main Content

Customer Ratings & Reviews

No content
  • Front. CyberPower - 450VA Battery Back-Up System - Black.
  • Alt View 11. CyberPower - 450VA Battery Back-Up System - Black.
  • Alt View 12. CyberPower - 450VA Battery Back-Up System - Black.
  • Alt View 14. CyberPower - 450VA Battery Back-Up System - Black.

CyberPower - 450VA Battery Back-Up System - Black

Model:
SE450G1
SKU:
6239405
$64.99

Customer reviews

Rating 4.7 out of 5 stars with 1985 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

Customers are saying

Customers commend the 450VA Battery Back-Up System for its battery life, performance, compact size, surge protection, affordable price, and ease of use. Many appreciate the generous amount of outlets available. However, some customers have noted the absence of a USB port, while others have mentioned concerns about noise, weight, and alarm issues.

This summary was generated by AI based on customer reviews.

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 45 Showing 881-900 of 1,985 reviews

  • Review of small bsttery bsckup

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

    Perfect for my needs. Best Buy had it in stock. Fair price.

    I would recommend this to a friend

  • Still running when the power goes out as

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

    This has been working since day one and when the power went out I was still able to count on it.

    I would recommend this to a friend

  • Has been very handy

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

    Power has gone out several times and all of my tv and computers that is plugged in were not damages.

    I would recommend this to a friend

  • Worth the money!

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

    Easy to setup, easy to use. Looks to be well made and should last a good amount of time.

    I would recommend this to a friend

  • UPS

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

    Working good works as described good value good bye again

    I would recommend this to a friend

  • Simple battery protection

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

    Had a PC that kept shutting off when the power would blink - this battery backup solved the problem.

    I would recommend this to a friend

  • Surge protection

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

    Great value for the price. Great for safeguarding computers and other electronic devices.

    I would recommend this to a friend

  • It works and protects my equipment

    |
    |
    Posted . Owned for 10 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    If you need a good inexpensive UPS, then this is the model. It provides safe power to all of my computer equipment.

    I would recommend this to a friend

  • Small but adequate

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

    Has worked just fine thus far. It's small and so it doesn't last all that long when the power goes out, but it's adequate.

    I would recommend this to a friend

  • Goof backup

    |
    |
    Posted . Owned for 8 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Using it as a backup for my home media server. No issues.

    I would recommend this to a friend

  • Solid Option To Stay Up And Running

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

    Great option to keep your smaller electronics, such as TVs, Modem, and routers up amd running during outages or power fluctuations.

    I would recommend this to a friend

  • Small UPS for routers and home security system

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

    I have one for Internet router for years. It works great to reduce wifi down time at power off frequently in Houston area. I just bought second one for home security system.

    I would recommend this to a friend

  • Battery

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

    Good product and operates exactly as intended. Would buy again.

    I would recommend this to a friend

  • Cheap and good

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

    Solid ups purchased for a wkst and cable modem in a pinch due to recent power outages. No USB connection, but solid.

    I would recommend this to a friend

  • My tv

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

    This is the second one that I bought. Works great.

    I would recommend this to a friend

  • Perfect little UPS

    |
    |
    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Perfect little UPS. Purchased this for my modem and wireless router so I wouldn't have to worry about reboots during power flickering.

    I would recommend this to a friend

  • Works Great

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

    Bought this to replace the 6 year old same item. Obviously since it was 6 years old, it works as it should for a long time!

    I would recommend this to a friend

  • Works great

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

    Needed battery backup so that the electricity will keep flowing if the power goes out. This device gets the job done.

    I would recommend this to a friend

  • Does what it should

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

    Easy to use. Exactly what was needed for the terrible Texas power grid to keep our gaming system alive.

    I would recommend this to a friend

  • No need to worry again!

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

    Best backup battery money can buy. What else can I say? It gets the job done

    I would recommend this to a friend
Page 45, Showing 881-900 of 1,985 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.