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Customer Ratings & Reviews

Your price for this item is $31.99
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The comparable value price is $44.99

Customer reviews

Rating 4.6 out of 5 stars with 1387 reviews

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Rating by feature

  • Value

    Rating 3.9 out of 5 stars

  • Quality

    Rating 3.7 out of 5 stars

  • Ease of Use

    Rating 4.8 out of 5 stars

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95%would recommend to a friend

Customers are saying

Customers are positive about the 450VA Battery Back-Up System's long battery life, surge protection, and performance. Many also appreciate its affordable price, ease of use, and compact size, with several noting the convenient number of outlets. A small number of users mentioned a noticeable humming sound when the unit is running on battery power, and the lack of a USB connection was also cited as a drawback by a few customers.

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 18 Showing 341-360 of 1,387 reviews
  • Pros mentioned:
    Price

    Rated 3 out of 5 stars

    Okay Battery Back up

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

    I purchased this battery back up because it was reasonable. I gave it a 3 star because I don’t know if it will last. I need to try it out first....

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Performance

    Rated 5 out of 5 stars

    Great value

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

    Easy to install and for me, the best thing I could have purchased. Better than the last one I had!

    I would recommend this to a friend
  • Pros mentioned:
    Battery life, Performance

    Rated 4 out of 5 stars

    Cyber power UPS

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

    After charging the battery for the prescribed 8 hours. This UPS work fine for a single PC, Monitor and Speakers.

    I would recommend this to a friend
  • Pros mentioned:
    Performance, Price

    Rated 5 out of 5 stars

    cyberpower 450v

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

    bestbuy sale for low price . wook very good, when power go off all my av still on

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    works great

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

    my old ups were going bad and these new ones I bought,,,i bought 2 give me clean power for all my monitors and computers I have 5 computers and monitors in my office...excellent for work

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Like the space saving flat plug. Does the job

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

    Just as described. I like the space saving flat plug. This is my second unit. I've had the first over a year with no problems. When I needed another I went back to the same brand.

    I would recommend this to a friend
  • Pros mentioned:
    Price

    Rated 5 out of 5 stars

    Great for Home Network

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

    This battery backup was the right size for my home network and the price was great as well.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    good, reasonable priced, small UPS

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

    I needed a small UPS for my Tivo. The until has plenty of power for this job. My only complaint is that you need to hold the power button down for mutliple seconds to operate it. that is non-intuitive.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great backup for small systems at a good price

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

    We purchased this to support a Mac mini with a 24" external monitor and basic ink jet printer. The specs are good and the price is good for this level of protection. The ports are numerous with 4 battery protected ports and an additional 4 surge protected ports. The ports are well laid out and support a variety of plugs and it fits out of the way under the desk without eating up a lot of room.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    It Really Works

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

    The night I installed the backup, was just in time... Avista decided to have a few lights on- lights off- lights on again, OOPS! No they are off. The back-up unit handled the situation, and everything worked, when the lights finally did come on and stay on. Without the back-aup unit I do believe most of the electronics would have been fried. It's still working just perfect.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life, Surge protection

    Rated 5 out of 5 stars

    Great price for a great buy

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

    got for the surge protection, love having the battery backup as a just in case scenario.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 4 out of 5 stars

    Good Solid Backup

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

    Purchased to replace and APC, Decided to buy Cyber Power because my luck was running out with others. The app once located on the internet is easy to install and setup, the backup charged up and is working as expected. Simple layout, I wish there was a little more separation between outlets but size is a constraint. USB port is a welcome addition. Biggest hit is when I try to register the product the website shows an error.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Does it's job

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

    It's a cheap UPS - I use it for my wireless router so we have time to backup and shut down various items around the house without losing the network. It does it's job, what else can I say?

    I would recommend this to a friend
  • Pros mentioned:
    Surge protection

    Rated 4 out of 5 stars

    Does the job

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

    I purchased because the amount of thunderstorms that occur in Florida. I was in fear of it doing some serious damage to my computer during these outages and therefore purchase this battery back up to eliminate a surge through my computer system. So far, this battery back up as prevented my computer from unexpected shutdown. In addition, i purchased and additional device for my router and telephone as well. I do like how this works.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life, Performance

    Rated 5 out of 5 stars

    Very good Battery Backup

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

    This is a very good backup, reliable and last for years, highly recommended.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    real good for a beginner

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

    In Florida battery backups are a must. the bigger the better and more enjoyable I always say. I need them for all the TV s all the computers and the audio system and the stereo equipment I have. I have a smaller one for my electrified pet door, my garage door openers and my pool filter and my charger for my electric car. Can't think of anything else right now as I am running out of power.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    A very dependable product

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

    I have had a previous Cyberpower UPS and find if a nice and compact unit. Granted the battery is not very large therefore it hold time is short, but with the constant power interruption here in southeast Florida it will protect my delicate devices such as router, modem and printer. It is easy to set up and works quietly. It does lay flat which takes up space but is easy to plug into.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life, Price

    Rated 5 out of 5 stars

    Backup battery for systems

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

    Excellent purchase for backup battery. Works well and was reasonably priced.

    I would recommend this to a friend
  • Pros mentioned:
    Performance, Surge protection

    Rated 5 out of 5 stars

    Battery back up

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

    Has been very reliable. Much better than a surge protector.

    I would recommend this to a friend
  • Pros mentioned:
    Price

    Rated 4 out of 5 stars

    Does what it is supposed to

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

    I normally stick with higher end backups but was in a pinch and this was all they had in stock at my local best buy. Few days later had a few power outages and this thing pulled through like a champ so save a few bucks and give this guy a shot. P.S. The biggest difference besides price is the battery time in the event of a full blown power outage. This is 2/3rds the price of its competitor and is only one second less battery time.

    I would recommend this to a friend