Appliances Presidents’ Day SaleEnds 2/25. Limited quantities. No rainchecks.Shop now

Skip to contentGo to Product SearchGo to Footer
Main Content

Customer Ratings & Reviews

$64.99

Customer reviews

Rating 4.7 out of 5 stars with 1968 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

Pros mentioned filter

Cons mentioned filter

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 56 Showing 1,101-1,120 of 1,968 reviews
  • Rated 5 out of 5 stars

    Great battery backup

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

    Easy to plugin multiple devices, and great in case the power goes out.

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

    Does the trick

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

    Only a few devices hooked up to it but so far so good. I'm a professional photographer with a lot of freelance in an area with severe storms regularly so I wanted a few of these around to keep my tech world moving. This one just has my modem and router hooked up to it. I have high speed internet at my apartment for speedy uploads to meet client deadlines.

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

    Rated 5 out of 5 stars

    great

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

    great product great price cant go wrong with this!

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

    Rated 5 out of 5 stars

    Works as expected. No problems at all.

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

    The CyberPower 450 Battery Backup has performed well. No problems at all so far.

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

    Rated 5 out of 5 stars

    Good Product

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

    Good Product as we have frequent power fluxes and outages.

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

    power

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

    It is easy to operate, works well when battery back up is needed.

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

    Rated 5 out of 5 stars

    Great Price.

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

    Great price for this battery backup. It works well.

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

    Rated 4 out of 5 stars

    CyberpowerPC 450va

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

    Bought this to replace an old CyberPower Battery Back-up. Needed a small battery back bacup to fit into a compartment. Perfect size.

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

    Rated 5 out of 5 stars

    As described

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

    It works, as expected. No surprises

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

    Excellent

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

    Highly recommended, easy to use, I have no compliant about that item

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

    cyberpower is a go to.

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

    REplacement for an older unit. It performed ok, the older one seemed a little more durable. In the summer months, we seem to get more spikes and such. This new unit shuts itself off more than the older one. I guess thats what it does, the equipment attached is safe and thats more important.

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

    Solid battery back-up

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

    Solid battery back-up. I'm using it to just handle my cable modem and wi-fi router. I've only had 1 power outage but I felt fully comfortable with it. Not knowing how long the outage was going to last, I spent a few minutes making sure I had time to shut everything down. Pretty sure I could have easily had 1/2 off of it.

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

    Open and plug it up

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

    Low cost battery backup Easy setup No need for instructions

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

    Rated 5 out of 5 stars

    Back up

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

    Back up does what it's intended to do. No complaints.

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

    Rated 5 out of 5 stars

    Great battery

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

    Great battery backup for any needs for a tv,modem,or router.

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    Doesn't work

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

    This device is advertised to be a UPS, which stands for "Uninterruptible Power Supply". This is useful to me since I have certain devices I would like to keep running during power outages and power flickers, and it would be annoying if power to those devices was interrupted. I get power flickers sometimes. Most of the time it's so fast that computers and other devices which aren't plugged into the UPS don't stop or experience any interruption in their power supply. But even in those cases, this supposedly "uninterruptible" power supply will stop providing power to anything that's plugged into it and emit a loud, annoying beep until I turn it off and back on again. In fact, this device is so sensitive that sometimes my only indication that a power flicker has happened at all is the beep. That renders this device completely useless--not only does it fail to supply power without interruption, it is actually even more prone to interruption than not having it at all. I can only recommend buying this if you never plug anything into it and only intend to use it as a power flicker alarm.

    No, I would not recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    CyberPower - 450VA Battery Back-Up System

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

    No issues. ...........................................

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

    Does the trick

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

    Arrived quickly. Easy to set up. We are back in business.

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

    Rated 5 out of 5 stars

    Perfect for the price

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

    Compact size, well constructed and good price! Perfect for TV

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

    Rated 5 out of 5 stars

    Great UPS

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

    so far so good, used as a backup for a couple of computers

    I would recommend this to a friend