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Customer Ratings & Reviews

$64.99

Customer reviews

Rating 4.7 out of 5 stars with 1968 reviews

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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

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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 15 Showing 281-300 of 1,968 reviews
  • Rated 5 out of 5 stars

    All good.

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

    Working the way they’re supposed to. I hooe they last for many years.

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

    Rated 5 out of 5 stars

    great back-up battery for a great price

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    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I got this one on sale for $45. It's the smallest unit I have seen. It powers my computer, lamp, monitor, and my Google Mini. The few times I have lost power, the battery never let me miss a second, keeping my computer on with no hiccups. When the power does flip, this battery kicks on immediately, and emits a beeping noise to let me know that the main power is off and I should shut everything down while the battery still has juice. Love it.

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

    Simple and effective

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

    Lightweight and ready to use. Haven't had any issues since I put it in to replace my failed unit.

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

    Rated 5 out of 5 stars

    Excellent

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

    Compact with sufficient outlets and ports. Feel our wifi & modem are adequately protected now.

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

    Battery backup well worth it!

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

    Great product, easy to use and works great. Keeps things runnjng with all the power fluctuations.

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

    Great and simple UPS

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

    Great product. Easy to mute. I am only writing at this point to fill up 50 characters.

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

    CyberPower Back-up - Just what was needed.

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

    When I needed an affordable, efficient, compact surge and back-up system in a hurry, BestBuy has the answer. I received the purchase in two days and was able to continue. It was easy to set-up, the cord was the length I needed and the instructions were straightforward. I only needed 8 hours to let it back. I'm glad it was purchased and would purchase one again for meeting my specific needs.

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

    So far so good

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

    I bought this surge protector backup after my internet modem power supply got fried in a storm. Since buying it there have been no bad storms so I cannot say how well it holds up or how long the power backup will last. It was easy to understand the directions and turn off the alarm since I didn't want to hear it in the middle of the night should there be a power failure.

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

    Rated 5 out of 5 stars

    Maintains power supply

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works well and reliable. Lower profile device fits in our space well and functions easily.

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

    Rated 4 out of 5 stars

    Solid UPS

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

    Little or no difference between this unit and APC UPS. Both provide power during power loss and will act as a surge protector. CyberPower does tend to be less expensive so there is that.

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

    Great Ups for internet

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

    Excellent ups for backup of Internet modem. Keeps the the interent connection stable

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

    Rated 5 out of 5 stars

    Surprisingly great

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

    Great price for a great product. Not as heavy as others I've owned like it in the past.

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

    Rated 5 out of 5 stars

    No more down electronics

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I got 3 of these tied to my mesh routers, computers, and fiber connector from ATT. All are now backup on battery power and with my loading all of these give me 15-60 mins of backup time which is more than enough. 60 mins is the fiber optic converter and it's the only load. and 15 minutes is 3 monitors, 2 computers, router, and printer tied to it ;).

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

    Rated 5 out of 5 stars

    Good job!

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

    In my application, providing backup to our cellular wifi modem, it has worked superbly. We had some modifications to the house done that involved having the power to the circuit feeding it temporarily shut down, and it kept our internet and wifi going over the entire house and again the next day after recharging overnight. The outage the 2nd day was not as long, but still was several hours both days.

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

    Rated 5 out of 5 stars

    System Protection

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought this to replace an APC unit that was way bigger than what I needed. The APC unit had been in used for almost 10 years and was on it's third battery when the battery gave up the ghost. This protects what I need covered and cost less than a replacement battery.

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

    Rated 5 out of 5 stars

    Simple backup for simple use.

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

    No frills simple backup to last long enough for my TV, Cable box, and DVD player and network switch to stay powered, in case of a power outage, for my house generator to kick on.

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

    Rated 5 out of 5 stars

    nice Battery Back up

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

    Long power outages (5 to 13 hours) happen where I live as often as twice a month, and since we're in a dead zone for cell coverage we have to use wireless at home, so without power I don't even have a phone connection. This UPS is just right for keeping my cable modem, wired/wireless network and VOIP phone working during a long power outage. It's the kind of thing where there's not a lot to say about it. Either it works when you need it, or not. This works.

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

    UPS for Router

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

    Easy to set up and seems to be functioning as expected

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

    Rated 5 out of 5 stars

    Backup battery

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

    Great battery backup. Would highly recommend the backup

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

    Rated 5 out of 5 stars

    Compact and Inexpensive

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

    This product was a lot smaller (more compact) than the one I was replacing. The right price and the right fit.

    I would recommend this to a friend