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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 4 Showing 61-80 of 1,387 reviews
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    The unit has worked well during power outages.

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

    I have three of these units with computers, modums and other electronic devices connected. During power outages (frequent in Floirda) they give us pleanty of time to properly shut down the connected devices if the outage is anticipate to be a long one and have had no problem with power surges.

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

    Rated 4 out of 5 stars

    ups backup

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

    this product is attached to my tv and xbox system to eliminate power surges from a power outage. the first one I bought lasted 5 years, so they are an inexpensive way to protect your equipment.

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

    Rated 5 out of 5 stars

    Great product

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

    Powerful surge protector; i actually ordered this and the store had made a mistake with shipment - somehow what I ordered was lost so they gave me the same battery but the one that costs a bit more and has a longer battery life (i didn't have to pay the difference). I like how it works!

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

    Rated 5 out of 5 stars

    Great add on

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

    This is a great add on. We had a computer that fried during a storm because my husband thought it would be better to have the surge protector on his PS4. Bet that thing is safe. Purchased the exact one that saved that lovely PS4 to save my thousand dollar computer during the next storm.

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

    Great for an emergency

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

    I was working on a desktop computer in a public setting and someone accidentally disconnected the power and I lost my work; I immediately looked up the available UPS offerings on the Best Buy app and found this lightweight unit. It was a wise investment.

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

    Rated 5 out of 5 stars

    reliable, good price

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

    Reliable unit. The power grid for my office building tends to get hit with a number of outages particularly with the strong summer storms we experience in Florida. I have had many of these over the years and they have worked without fail.

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

    Rated 5 out of 5 stars

    Great Size & Value for the Power

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

    This 8 outlet power supply and surge protection back-up system is perfect for my small power supplied office equipment. I have my computer, printer, USB storage devices completely protected and running with perfect confidence!

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

    Rated 5 out of 5 stars

    It does exactly what it is supposed to do.

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

    I keep one computer & monitor set on it and it supports them both through power outages. It does it's job and has presented no problems. When power goes out, it produces two beeps every several seconds; you know it's working but you can still work.

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

    Light & Efficient

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

    Needed a smaller back-up battery for my home audio system that kept freezing up every time the power would trip. This has worked great at preventing this and is small enough to fit right in the cabinet with the system.

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

    Rated 5 out of 5 stars

    Good UPS

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

    I have this plugged into Verizon box. The one inside the box powers ONLY the telephone. By having a UPS plugged into the Verizon box, it keeps the cable and more importantly, the Internet running for about 30 minutes.

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

    Rated 5 out of 5 stars

    Great CyberPower - 450VA Battery Back-Up System

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

    My older one last me 8 years and worked like a charm when power outage that allow me still connect to the internet and work on my pc for about 20 mins. By that time, power was fixed and recharge back for next time.

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

    Rated 5 out of 5 stars

    Very nice

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

    Works well. I have my desktop, my laptop, my monitors, and my gaming system plugged into it. It lasts long enough to properly shut those items down in case of power interruption.

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

    Rated 5 out of 5 stars

    Simple yet effective

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

    Installation was quite simple. Plug and play. Higher end models require connection to a pc but this is adequate for my intentions. Was tested during a thunderstorm within a day of use and performed as expected.

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

    Works like a charm

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

    I have my computer, monitor, printer and a few more things attached to this power brick and it's saved me a few times already. I go to college and am therefore constantly doing work on my computer. Work that, if a power outage where to happen and my computer shut down, I'd throw my monitor across the room and drop out of school. Fortunately, CyberPower has my back. I've lost power in my house a few times already and this thing saved me. It doesn't last super long after losing power, but long enough to save any unfinished work (or complete that quest you've been spending 30 min on in the Witcher). Did I mention it has 8 ports, 4 of which continue supplying power after an outage? All-in-all, this product is great.

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

    Rated 5 out of 5 stars

    Good UPS for protection against power outages

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

    Good UPS for protection against power outages. I use UPS's on all my electronics not only for power supply backup, but for surge protection which I believe is better than just a surge protector power strip.

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

    Rated 5 out of 5 stars

    It's doing the job, protecting my computer!

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

    Since purchasing the Cyber-power 450VA, it has protected my home work station through two electrical storms and one power interruption. The unit has functioned as designed...can't ask for anything more than that! Thank you.

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

    Rated 4 out of 5 stars

    Works, but no automation

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

    Great UPS for single PC. Only drawback is that there is no software or cable to monitor UPS and automatically shutdown. Worth the price - just wish it had automation/monitoring software,

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

    Rated 4 out of 5 stars

    Very satisfied!

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

    Great value and terrific quality for this CyberPower -450VA Battery Back up system. Has great features such as eight surge protector outlets. Four of the outlets provide continued power , should the power go out. Highly recommended!

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

    Rated 5 out of 5 stars

    Good home computer power

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

    The last one died after about 6 years. It keeps the computer from needing a reboot during short power interruptions or allows a normal shutdown during longer interruptions. Nice to have.

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

    Rated 5 out of 5 stars

    Reliable and reasonable

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

    I’ve had several instances where my power went out. In each case the Battery started beeping and gave me enough time to shut everything down. It’s a great home system backup battery.

    I would recommend this to a friend