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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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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 26 Showing 501-520 of 1,023 reviews
  • Pros mentioned:
    Price

    Rated 5 out of 5 stars

    Great and reliable Item

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

    This was a great item for the price. Had already purchased this brand before and didn't hesitate to do it again.

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

    Rated 5 out of 5 stars

    Reliable Back Up!

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

    This un, it is awesome, it regulates power so unit does not have to go to back up power a lot! Provides Great Protection

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

    Perfect protection for home office

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

    I got this to protect my home office equipment and so far it has worked wonderfully. Highly recommended for the price.

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

    So far, it's good

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

    Product works. No power outage to test. 4 stars as image on box was a different model than what we bought so when it didn't have the screen we were disappointed, but it wasn't a necessity so it is what it is.

    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.

    Easy setup, protects my stuff. Software monitoring gives me what I need to know about power usage.

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

    Rated 5 out of 5 stars

    better than a regular surge protector

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

    definitely the way to go for a safer alternative to regular surge protectors for anything you really don't want fried.

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

    Rated 5 out of 5 stars

    Never failed me only gave up in old age!

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

    My last one lasted a long long time before giving up the protection of my sound equipment. Got this one to replace it.

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

    Rated 5 out of 5 stars

    GOOD BACKUP

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

    i BOUGHT CYBERPOWER AS A BATTERY BACKUP FOR ONE OF MY COMPUTERS. IT HAS SUFFICIENT NUMBER OF PROTECTED OUTLETS.

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

    Rated 5 out of 5 stars

    excellent buy

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

    the Cyber power battery back up system was highly reliable...works very well and serves all my electronics at home....

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

    Good option

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

    Good option when the power goes out. Also protect your equipment

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

    Rated 5 out of 5 stars

    Great protection without breaking the bank

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

    Great protection of equipment in the event of power outages or surge due to lightning or power company bumps.

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

    Rated 5 out of 5 stars

    Back up power

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

    Always need a great back up battery for your pc as well tv never had a problem before with these

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

    Rated 5 out of 5 stars

    Reliable, well made, good value

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

    Its big and bulky but it works, I'm using it to protect my router wifi and network switch.

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

    Rated 4 out of 5 stars

    Does The Job

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

    During Commercial Power outages my computer maintains power as advertised.Only problem is On/Off switch on top of device. When my cats walk across it, they turn it off. I have found it necessary to protect the device.

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

    Rated 5 out of 5 stars

    Excellent Value

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

    This battery backup has more connections and amperage at a better price than most competitive brands. Great deal!

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

    Rated 5 out of 5 stars

    A solid buy

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

    This UPS is a good value for the price. It delivers exactly what you expect, and so far is completely trouble free.

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

    Rated 5 out of 5 stars

    Reliable power source when power fails!

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

    This has been a reliable power source and enabled me to give me time to save important data at critical times!

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

    Just what we needed

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

    We have a few other CyberPower UPS backups, but we needed one with more outlets. Hence, this purchase. As our other ones are each older enough to have required battery changes since their original purchase, it was nice to see that this new one looks "refreshed," but still familiar. Given how often the power is going out these days, we might eventually be forced to buy a PowerWall, but until then, these work great for us.

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

    Rated 5 out of 5 stars

    very good power back-up

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

    I live in the mountains of pennslyvania you never know when the power is going to fail. you need a good back-up.

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

    Rated 5 out of 5 stars

    Safty

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

    Saved my TV several times. I have always purchased on for all my equipment. Would not be caught without it.

    I would recommend this to a friend