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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 37 Showing 721-740 of 1,023 reviews
  • Rated 4 out of 5 stars

    Must have for work at home professionals

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

    I work from home as a software engineer and run many computers in my home office, Having a desktop computer for a lot of my work means the potential for power outages, especially in the woods where I live in winter. So its a must have. Has the power and it has more outlets than my previous one. Also has software for managing the device. When the power does go out. Great power source.

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

    Perfect home battery

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

    This battery is perfect for home users and can easily support a pc with one performance graphics card. I would jump up another class if you plan to use the newest or multiple mid grade graphics cards, or multiple socket motherboards.

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

    terrific easy to terrific easy to terrific easy to

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

    terrific easy to terrific easy to terrific easy to instal

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

    Rated 4 out of 5 stars

    Just what I needed

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

    After looking for something reliabke, i found it. I plan to buy another one soon.

    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.

    Bought this to replace my old CyberPower. Went up to the next size and it works great. Downloading the software and setting it up was easy. Had a couple of times of short electrical outages and it worked well.

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

    Rated 4 out of 5 stars

    Good

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

    Doesn't hold charge for too long but great protection for your computer

    I would recommend this to a friend
  • 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.

    I have seen some reviews with people having problems with the unit, but in my case, I never had any of the problems described. The unit seems to be made well and I have not had any problems with it as of yet.

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

    Doing it's job

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

    I haven't had this very long. It was very easy to get going.

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

    Solid Backup

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

    This one has plenty of sockets and in a way that I can get all my plugs into the UPS. Because a lot of my plugs are the wide ones, you can only use a few plugs on other UPS. This is working out great and at a great price.

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

    Rated 4 out of 5 stars

    Workstation UPS

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

    Inexpensive UPS for a networked workstation. Works as expected

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

    Rated 4 out of 5 stars

    Very Good Product

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

    Use in my home office for all my pcs. Overall performance is satisfactory.

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

    Rated 4 out of 5 stars

    Good battery backup

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

    A baterry backup at reasonable price. I had to go to Bayamon to get it.

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

    My preferred UPS

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

    I started using CyberPower UPS's about 10 years ago, replacing the other known brand, and haven't looked back yet. Fewer battery problems, I really like the associated software, and they last longer.

    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.

    I have seen reviews where people said they had problems, but I guess I am lucky. I have had no problems so far with the unit. It works well and keeps the computer running during short power failures.

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

    Light weight and fits the ticket!

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

    This is a pretty straight forward purchase of a battery backup and surge protection. Our old one died, so we got a new one. Sure is light weight and easily fits where the old one went. It does its job.

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

    Rated 4 out of 5 stars

    Great

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

    I had problems with my old one. I bought this one and it works great.

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

    Battery backup

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

    This backup does its job of backing up my network equipment.

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

    Great value UPS

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

    CyberPower has been my first choice for over 10 years because of their great value at a great price. I've also used more expensive brands when someone else was paying, and had no difference in experience.

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

    GOOD UPS

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

    WHEN IT WORKS THE BURNING PLASTIC SMELL COMES FROM THE WHOLE UNIT. THEY SHOULD MAKE IT WITH UNSMELLY PLASTIC.

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

    Rated 4 out of 5 stars

    Very good product

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

    excellent product.Price was reasonable.I would recommend product.

    I would recommend this to a friend