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Customer Ratings & Reviews

Your price for this item is $62.99
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The comparable value price is $89.99

Customer reviews

Rating 4.7 out of 5 stars with 1023 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 4.7 out of 5 stars

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97%would recommend to a friend

Customers are saying

Customers express satisfaction with the 850VA Battery Back-Up System's long battery life, reliable performance, and effective surge protection. Many appreciate its reasonable price, ample outlets, and ease of use, finding it straightforward to set up and operate. The unit's size is also frequently praised as manageable. A minor drawback mentioned by some customers is the system's weight.

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 33 Showing 641-660 of 1,023 reviews
  • Rated 5 out of 5 stars

    Good UPS

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

    This Cyberpower UPS has enough backup power to keep my small server and several other pieces of equipment running through short term power outages. The monitoring software available after you register the UPS is more than adequate to allow the server to perform an orderly shutdown if the outage exceeds the UPS capacity.

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

    Rated 5 out of 5 stars

    Works As Advertised

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

    This is a great product that performs exactly as advertised.

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

    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.

    Does exactly what it’s supposed to. Great price too

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

    Great for little time needed

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

    Was easy to assemble but only problem was not enough time with the battery back-up that I needed for 3 hours. Great to have for short time back-ups.

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

    Rated 4 out of 5 stars

    Great Battery Back-up & Surge Protection

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

    Needed a good surge protector and battery back-up so I chose the Cyber Power 850V. Good pricing and not too big.

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

    Rated 5 out of 5 stars

    does everything it should

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

    does everything it is suppose to - no problems would buy again

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

    Rated 5 out of 5 stars

    Good UPS/Power Strip

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

    Easy to install. Great price. Great combo unit for network ups.

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

    Rated 5 out of 5 stars

    Perfect

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

    This what I've been needing. Burned my last CPU without one

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

    Good UPS but sensative.

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

    Replaced old UPS with bad battery. Works as stated except seems to be quite touchy with small incoming voltage frequency changes. I have 3 others in same room and this is the only one that switches to battery frequently. The PowerPanel monitoring software only lists the last power event and does not give access to a running log of events. This would be helpful when trying to determine where the potential electrical problem is. I believe my problems are with that incoming line as I have another one of these that works just fine located on the opposite wall.

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

    Rated 4 out of 5 stars

    Good back up for electronics

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

    I got it to replace my geek squad ups and I knew from the one I had before the last one that this company was reliable and would last for a few years.

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

    Battery Backup

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

    No Issues. Works as intended. Placed in on a Dell Desktop.

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

    Rated 5 out of 5 stars

    Work perfect

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

    For the price definitely worth it. Hopefully it will last.

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

    Cyberpower 850VA Battery backup UPS

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

    Best layout of several UPS (Uninterruptible Power Supply) that I have had. I have used them since I have had a problem with power spikes that took out a couple of computers many years ago. All of them have prevented a similar problem since I have been using them. This one has a more intelligent layout so you can use those brick transformers on it.

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

    Rated 5 out of 5 stars

    Exactly what I needed

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

    Everything I needed for my office. Outlets are setup perfect.

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

    Great Battery Backup

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

    This is the second CyberPower 850VA battery backup I've purchased. I like it because it has a decent battery run time, plenty of plugs on the battery side and the same number on the surge protected only side. It also has a fairly high joule rating, a lot higher than some others. That's important for protecting those expensive electronics.

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

    Rated 5 out of 5 stars

    Very good UPS

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

    This is my 2nd Cyberpower, the 1st one was faithful for years.

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

    Rated 5 out of 5 stars

    Great above average

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

    Great for when you're running dual monitors. And sound system.

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

    Rated 5 out of 5 stars

    great product

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

    great battery back up has many plugs for surge and back up

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

    Great UPD

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

    Easy to set up and so far it has performed nicely for us

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

    Rated 5 out of 5 stars

    good value

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

    Works as expected and better than other brands that I've tried.

    I would recommend this to a friend