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Customer Ratings & Reviews

$84.99

Customer reviews

Rating 4.7 out of 5 stars with 1791 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 have good things to say about the 650VA Battery Back-Up System, especially its long battery life, overall performance, and ease of use. Many appreciate the reasonable price and adequate surge protection, as well as its convenient size and handy USB ports. Some customers have noted minor issues such as a slight humming noise and, in rare cases, random alarm activations. A few have mentioned its weight and isolated incidents of overheating.

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 69 Showing 1,361-1,380 of 1,791 reviews
  • Rated 5 out of 5 stars

    Wonderful battery back up

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

    Our back up battery died and we needed a new one. The price was right and we bought it.

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

    It's a UPS.

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

    Well, we haven't had an outage since purchase, so I can't say how well it does what it's supposed to do, but the battery rating for the price can't be beat, and I don't have any complaints at this point.

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

    Surge protector/battery backup.

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

    Functional and affordable. Local store did not stock this item, so I had to wait several days plus an extra trip of 45 mi. to pick it up.

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

    Exceptionally durable power provider

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

    This system is exceptional for a home office with lots of power needs. It is a rugged product with an extensive battery back-up.

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

    Nice price

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

    So far so good, of course we haven’t lost power since I purchased this item. Go figured

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

    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 to use for your home computer just in case you have a power outage and need to turn your computer off.

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

    back up battery system

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

    best back up battery system out there. Better than most brands

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

    When power dies

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

    Good value, easy to install. Needed to help mom when power dies.

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

    UPS Battery

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

    Works good, efficient and pleasing to look at. Would buy again.

    I would recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Glad to hear that the unit is working as intended. Thank you for your review! CyberPower

  • Rated 5 out of 5 stars

    Good Price, Nice Size

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

    Its Square, it's Black it does the job. I use it for my internet. Modem and router. Cyber Power is good stuff.

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

    Rated 5 out of 5 stars

    Easy set up

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

    Works great. Great value considering capability and price

    I would recommend this to a friend
  • Rated 2 out of 5 stars

    Disappointed

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

    I thought this UPS was great at first. It seemed to do what it was supposed to do. I have two of them to help manage the brownouts that we get. However, recently, one of them failed miserably. The power went out and it kicked in for a while. I turned off my connected equipment with no problem. I turned off the beeping alarm and thought that was that. The power came back on and all seemed well. However, one night the battery suported side just went out, everything thing plugged into that side was off. I reset it to turn it on, but wondered why it was off. The power had not gone out! Then it happened again for no reason. Then, we had a brownout, lasted less than 5 seconds. Thing started beeping and everything connected to battery side lost power again. Now the battery side doesn't work unless the unit is plugged in, so I no longer have a UPS. It's been less than two years with this thing. I'm very disappointed and will be looking for a different longer lasting brand.

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Sorry to hear your UPS is having issues. It sounds like the internal battery may be failing, though the units do have a 3-year warranty from the date of purchase that covers the internal battery as well. If you can contact our Technical Support team at 1-877-297-6937 and select option 1, we may be able to replace the unit for you under warranty. Thank you for your review! CyberPower

  • Rated 5 out of 5 stars

    recomend

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

    I can't recommend enough having one of these devices on a TV, computer, stereo equipment or any electronics you have.

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

    Great Experience

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    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Slick purchase! Ordered on-line, picked up at Sandy Utah location and reasonably priced.

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

    Where have you been? YES!

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

    Total necessity for power outages! Internet doesn't go out on short intermittent outages! YAY!!!!

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

    A good safety measure

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

    With all the power outages we had been having, I decided it was time to really protect my elactronics.

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

    A good power supply

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

    I needed a battery for my desktop and saw this one at BestBuy. I look it over. It had a lot of what I was looking for on it. So I got it. It does a good job for me. But I would like to have a bigger one at sometime.

    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.

    Haven't had a problem yet and it is used in a harsh, hot and dusty environment. Powers everything great without a complaint.

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

    Works with Synology

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

    This CyberPower back-up system plays well with Synology NAS (there's some nice features available)

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

    Lights Out

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

    Nice backup unit to have when your power goes and you need something to give you a little extra power.

    I would recommend this to a friend