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Customer Ratings & Reviews

Your price for this item is $45.99
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Customer reviews

Rating 4.7 out of 5 stars with 1032 reviews

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Rating by feature

  • Value

    Rating 4.5 out of 5 stars

  • Quality

    Rating 4.6 out of 5 stars

  • Ease of Use

    Rating 4.7 out of 5 stars

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97%would recommend to a friend

Customers are saying

Customers are delighted by the 650VA Battery Back-Up System's long battery life and reliable surge protection, praising its performance and ease of use. Many appreciate the system's value for the price and convenient size. While some find the unit somewhat heavy, the alarm feature has received mixed feedback.

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 50 Showing 981-1,000 of 1,032 reviews
  • Rated 4 out of 5 stars

    good

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

    It meets my needs for backing up my computer and accessory attachments.

    I would recommend this to a friend
  • Rated 3 out of 5 stars

    Basic UPS protection for utility power anomalies

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

    Widely spaced outlets very useful. Don't understand why in this day some electronic devices still have a plug end the size of a shoebox. Note: battery is not replaceable, basically a disposable UPS. Would prefer to at least have the option to replace battery. For that reason I would not recommend.

    No, I would not recommend this to a friend
  • Rated 4 out of 5 stars

    EASY TO UNDERSTAND HOOKUP

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

    DOCUMENT WASY TO UNDERSTAND AND THEN TO DECIDE WHICH POWER CORD WHEN WHERE

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

    Does the job for a simple setup

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

    I use this for a desktop monitor and phone system and it works well.

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

    so far so good. seems to do good job

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

    back up system is working fine. have not had a power outage yet.

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

    Great deal

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

    Purchased on sale as a replacement. Easily setup. Works well

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

    It's ok

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

    It's just a ups battery for my computer, not really much to review

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

    good price for what is offers

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

    This product was reasonably priced and will provide the power I need.

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

    Solid Battery Back-Up System

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

    Solid feel, but heavy and somewhat bulkily in terms of its size.

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

    Met our expectations

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

    Serves the purpose needed when we switched to TWC internet service.

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

    Decent battery back up

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

    Decent battery back up with more coverage than other brands

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

    Worst battery backup I've ever had

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

    Can't turn off the alarms (even though it claims you can), so have fun listening to a high pitched nonstop tone if it ever trips. Unit sometimes lets you use the control software on your PC, other times, greys everything out, but even if you do get lucky and can change the alarms to off, it doesn't care and will give you a nice alarm anyway. I guess it knows what it thinks to do better than the user telling it what to do. Backup time is really less than 2 minutes under a normal load if you only have a 20" Monitor and PC tower. Has gone off 3 times in 2 weeks in the middle of the night with a high pitch power outage tone (even though the power never went out), again, nonstop tone so you have no choice but to crawl out of bed at 3:00 stumble to get to the power supply and turn it off, then lay awake in bed for the next 2 hours wondering why. I have a voltage monitor installed on many outlets in my home & my home power has not dropped below 114v or over 122v and never varies from 53-56 Hz, so there is no reason for this to happen because it is in the specs of the device as "safe", so the only explanation I can give is this is a very an inferior product. Taking it back tomorrow and paying the extra 15 bucks for a non-generic manufactured backup power supply. Save yourself time and aggravation. Stay away from this unit. Does not work as claimed and gives no real user control. There are many better brands that are respected and verified good. Don't do like me, research all options first and don't try to save 10-20 bucks, you'll be a lot happier.

    No, I would not recommend this to a friend
  • Rated 4 out of 5 stars

    its ok

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

    It seems to be ok as it does what it is supposed to do.

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

    Good

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

    Good item for me.. Lower the price will be better.

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

    Very nice

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

    Good job without any troubles. People helpful. Nice

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

    adequate outlets, competitive price

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

    This is a good backup system, pleased with purchase.

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

    good

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

    It is a good product. i recommend it for your guys..

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

    Great investment

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

    Great product and it's backed by a great warranty.

    I would recommend this to a friend
  • Rated 3 out of 5 stars

    review

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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.

    This has now failed twice. I actually talked to the cyber power tech guy when it failed the first time to make sure it was the correct one for my setup and he assured me it was. too many issues.

    No, I would not recommend this to a friend
  • Rated 3 out of 5 stars

    Does the job

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

    I purchased this backup power supply to replace one (different brand) for a number of years that just ran out of juice. The one I have now is a replacement from Best Buy as the initial one simply did not workl; the battery simply would not charge.

    I would recommend this to a friend