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Customer Ratings & Reviews

Your price for this item is $84.99

Customer reviews

Rating 4.7 out of 5 stars with 1772 reviews

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Rating by feature

  • Value

    Rating 4.6 out of 5 stars

  • Quality

    Rating 4.6 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 are pleased with the 650VA Battery Back-Up System, especially the battery life, overall performance, and ease of use. Many appreciate the reasonable price, adequate surge protection, and convenient USB ports. However, some customers have noted a slight humming noise and a few have experienced random alarms. A few others mentioned the unit may be a bit heavy.

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 24 Showing 461-480 of 1,772 reviews
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Reasonable price, works as advertised

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

    Mid price range UPS With enough power to handle several peripherals for my home office. Helped me keep working through a couple power outages which were frequent in my area for a while.

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

    CyberPower 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.

    So far, so good. Had to replace my old battery backup when it went on the fritz. This has many more outlets and sits very flat.

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

    Rated 5 out of 5 stars

    This has saved my electronics!

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

    With a home wiring problem in the house we purchased. For some time now we have had breakers trip and power surge our electronics. This is the best line of defense against it.

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

    Rated 5 out of 5 stars

    Freind of backups

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

    Great backup protecting our electronics. I have used these for any years.

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

    Rated 5 out of 5 stars

    super power

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

    I love my power pack it is a life saver if the power goes out I have time to close out my work on the computer

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

    So far, so good!

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

    I don't frequently get power outages so it hasn't really been put to the test yet. I needed protection from uneven power since my computer is on the same curcuit as a wall AC. The USB ports are a plus.

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

    Rated 5 out of 5 stars

    Great product

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

    Exactly what I was looking for in a battery backup power supply.

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

    Decent UPS, great price!

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

    What can you say about a UPS? It works, it's cheaper than APC and well built. Has USB ports. The outlets are spaced well to handle chargers, etc.

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

    Rated 5 out of 5 stars

    CyberPower 650VA

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

    My previous CyberPower battery backup just died. I'd had it so long I can't remember when I bought it. It has protected my computer without any issues. So I definitely feel it was worth it.

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

    Rated 5 out of 5 stars

    Everyone needs one for their electronics.

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

    I've always had a UPS on my computer systems and this one works great. Protected my daughter's computer during the snow storm in Texas in March. Well worth the price!

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

    CyberPower battery back-up

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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 to replace a 6 year old one of the same brand that stopped working. Order process was simple and device arrived when expected. The outlet orientation was rotated 90 degrees from prior the prior unit and it made 'plugging in' a bit of a jigsaw puzzle. Orientation makes sense if just a plug but 4 of my 7 devices had mini-transformers (bulkly) instead of a pure plug.

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

    Rated 5 out of 5 stars

    Power supply

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

    Its very nice, does its job when needed most. Great buy!

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

    Rated 5 out of 5 stars

    Beyond my expectations

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

    I really like it, and works great for that price I recommend it

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

    Rated 5 out of 5 stars

    Great backup power supply.

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

    This is being used for a breathing machine used to give an elderly woman treatments as needed. Without this, in a power outage it could become an emergency situation. This product works perfect for that.

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

    Rated 5 out of 5 stars

    Owner

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

    Amazing project. Longer battery life than listed on the product.

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

    Rated 5 out of 5 stars

    A great little UPS for a low price.

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

    UPS are a necessity for small business a must for home networks. This one offers both additional power during a black out and surge protection. For its price, i would recommended it.

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

    Rated 5 out of 5 stars

    Great battery backup

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    Posted . Owned for 9 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a great battery backup. My favorite part it comes with a USB cable to plug into your computer. You can configure when to power off your computer safely in case of an outage.

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

    Rated 5 out of 5 stars

    battery back up

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

    I have not had it fail and it does a good job powering my businesses' station.

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

    Rated 5 out of 5 stars

    Good UPS

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

    So far the unit has performed as it should without any issues. Hopefully the battery lasts many more years before needs replacement.

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

      Glad to hear things are going well with the Cyber Power unit. Remember, the SX650U comes with a 3 year warranty so if you do run into any issues, reach out to our support team and we'd be happy to help. Thank you for submitting your review! CyberPower

  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Great backup!!!

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

    Great power outlet/ backup!!! Never have had to use the back up feature yet... But having the extra outlets and the added benefit knowing I have extra power after power outages is great.

    I would recommend this to a friend