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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

Pros mentioned filter

Cons mentioned filter

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 20 Showing 381-400 of 1,023 reviews
  • Pros mentioned:
    Surge protection

    Rated 5 out of 5 stars

    does a lot in a little space

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

    This CyberPower combines the best of both worlds - a 6 outlet battery backup for the important stuff and a 6-outlet surge protector for the minor stuff you need around the computer (calculator, lamp, etc).

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

    Rated 5 out of 5 stars

    The only brand of battery backups I use

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

    I work in IT and this is literally the only brand that I use around our businesses. CyberPower is always appropriately priced and I've never gotten a defective unit from them. Never been let down by CyberPower.

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

    this met my needs

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

    its nice to have so many outlets in one place its great.

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

    Rated 5 out of 5 stars

    Battery Backup with 10 sockets

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

    This battery back up works well. It has widely placed sockets to accommodate large ac adapters. The fault alarm that lets you know if you have overpowered the batter sockets works well as well.

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

    Rated 5 out of 5 stars

    Great UPS

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

    I have had several CyberPower UPS over the years and these are excellent. I use them for computer equipment as well as entertainment systems and they perform admirably keeping my equipment safe.

    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.

    Works great, don't have to open back and plug in battery...

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

    So far, so good.

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

    It is doing it's job. This is my third battery back up system since I 2009. They seem to take the lightening instead of my computer. Thank you.

    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.

    Works as expected. Love the ability to mute the alarm.

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

    Great for commercial use

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

    I use them at our restaurants to protect our registers

    I would recommend this to a friend
  • Rated 5 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.

    this is a great ups, works great just what I purchased

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

    Rated 5 out of 5 stars

    Does what it's supposed to do

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

    I have several of these back up battery packs. They work as they're supposed to and when the storm calms my computer and television is protected. it is a good product and I would recommend it to anyone.

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

    Rated 4 out of 5 stars

    Good Price UPS

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

    Great price for the amount of outlets and the size.

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

    Great back-up system

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

    It was easy to install and use. Only thing I needed more back-up then it provided since my electricity was out all day. Wonderful back-up system to have around for small outages.

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

    The product is an update of same.

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

    Excellent item to avoid power surges and shut-offs.

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

    Great

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

    Great power protection, worked well with custom pc

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

    good

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

    no problems so far..................................

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

    Great UPS

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

    UPS does a great job of supporting my TV and the associated equipment, protecting it and keeping things going when the power dips. The size fits neatly behind the equipment and is out of site.

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

    Rated 5 out of 5 stars

    Great for small home office

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

    It does the job and batteries can be replaced when needed. I got it to keep the router and the cameras going during an outage and it is doing what it's supposed to do, no issues.

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

    Rated 5 out of 5 stars

    Perfect for protecting TV, cable box and blu-ray p

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

    I purchased this to keep my electronic equipment protected from brownouts, spikes and power loses. It's not intended for extended power outages, just the short power loses from time to time.

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

    Rated 5 out of 5 stars

    Great protection!

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

    This battery backup has protected my home theater components through several thunder and lightning storms which are very common and frequent where I live. I have peace of mind with this device.

    I would recommend this to a friend