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

Skip to contentGo to Product SearchGo to Footer
Gift Ideas
Main Content

Customer Ratings & Reviews

Your price for this item is $84.99

Customer reviews

Rating 4.7 out of 5 stars with 1780 reviews

Rating Filter

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 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 57 Showing 1,121-1,140 of 1,780 reviews
  • Rated 5 out of 5 stars

    Stable power

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

    Great unit for modem, AP and switch at entry for about an hour of run time. Wall mountable. Perfect for those small power glitches and major disruptions.

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

    Battery backup is good for me

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

    We rarely have power loss here but I want to make sure I can keep working no matter what might happen. Especially if I am uploading or downloading a large file and don't want anything to get corrupted.

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

    Works quickly and lasts enough time to safely shut

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

    Works great in case the power to my room goes off. Lasts for at least 10 minutes with computer/monitor and switches over from the wall to backup instantly. Software works well to connect over usb to my computer to test software/see status.

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

    Good back power & surge protection

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

    Have been using CyberPower UPS and surge protectors for many years and thus far have not been disapointed. I gave this one 5 stars based on past performance and realibility of the ones we have bought before. Had bad luck with APC and Belkin UPS's before purchasing the CyberPower brand.

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

    Great for a good price

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

    Great, has done its job saving me from power outages. Just make sure you don’t go over its output limit.

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

    Cyberpower Battery Backup

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

    Great little unit. Got it for backing up power for wifi router. Works really well. Like it's interface to laptop but has to be plugged in. Would be better if it communicated through wifi.

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

    Rated 4 out of 5 stars

    You will hey a charge out of this.

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

    Wanted a battery backup to keep those little blips of power loss from occurring. It works.

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

    Rated 4 out of 5 stars

    Very good and reliable UPS.

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

    Although it's not a brand name but it is good.I tested it and it works as described.and much cheaper.

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

    Great for PC power fluctuations and outages

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

    So far so good for keeping my desktop going during power outages and fluctuations. I don’t need the most power for my application. But it has performed flawlessly so far.

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

    Worth the money!!

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

    I can't stop buying these. The affordability & assurance of this purchase is amazing. It is essential to have these when buying high priced electronic products.

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

    Battery Backup

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

    East to hook up all the various pieces. I have used this brand before. I hope this one lasts longer than a couple of the earlier versions.

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

    Rated 4 out of 5 stars

    Cyberpower Review

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

    Good Back for emergency situation. Would recommend this item

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

    Great Battery Backup Solution

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

    Easy set up, is handling power surges that I have quite well

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

    Great back-up

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

    The battery back-up keeps is great for keeping my computer up when the power goes out or flickers off and on.

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

    Grate battery back up

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

    I am very happy with this product , where I live the power is off frequently for second and some time loss my work on computer, now I don’t have this situation thanks to this battery back up. I recommend this product to person with the same situation.

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

    Good unit!

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

    Haven't had a power surge or outage yet, so I can't verify this product's effectiveness. However, it is charged, plugged in and working like I don't even know its there.

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

    Rated 4 out of 5 stars

    Works plenty fine for me

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

    Good product. Works as advertised. Inexpensive and does the job

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

    Back up Battery

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

    This is my second purchase of a back up battery in 4 years, always buy here for value and availability

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

    Excellent Product

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

    Excellent product. Just ha a close lightning strike near my house. Everything plugged in stayed online with no damage

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

    Battery back up

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

    This battery back up was just what we needed for both our computers. Not only do we have the time to safely turn off our computers during a power outage, it catches power glitches in the system when they happen. Nice.

    I would recommend this to a friend