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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 13 Showing 241-260 of 1,023 reviews
  • Pros mentioned:
    Outlets

    Rated 4 out of 5 stars

    Good UPS

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

    Has plenty of outlets and power for a desktop and a couple monitors

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

    Rated 5 out of 5 stars

    CyberPower - Power Block

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

    Where I live, power surges and brief outages go with the changing weather. This power block is used to cover my needs in powering my laptop, desktop, printer, speakers and monitor. It will beep when the power is lost to warn you to shut things down before the power runs out. It's great for an outage and its great for lightning, etc. I purchased this one as a replacement for an earlier model that quit working properly after 11 years - not too bad for longevity.

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

    Rated 4 out of 5 stars

    Good protection against power surges

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

    Bought it to protect my electronic devices against power surges.

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

    Has more than enough outlets; bought it to protect recent desktop computer purchase. So far very happy!

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

    Accommodates all of my PC devices

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

    This device handles all of the plug in connections I need for my PC, including router, modem, scanner and printer. Have not had an outage to test how long it will stay up once the power source is gone.

    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 actually had my power go out today and as promised the backup worked. I have this backing up my home security cameras (8 cameras and 1 DVR). I will be buying another for my computer and modem as well!

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

    great purchase

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

    I needed extra plugs, and the Cyber-Power delivered. I've used this brand in the past, and have always been satisfied. In fact, I'm moving an 8 plug unit downstairs, so I can use this one in game room.

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

    Excellent

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

    For the money this is a peerless UPS, with plenty of outlets and AVR. All you could want is more standby time, but for small computer systems like mine this is more than adequate.

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

    Rated 4 out of 5 stars

    Good Back up

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

    Great unit for the cost. Having 12 outlets is a big plus.

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

    Great backup

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

    The alarm is annoying when I lose power. It works great

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

    Rated 4 out of 5 stars

    Good Backup Power Supply

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

    This replaced a smaller capacity Cyberpower power supply that was 4 years old. Since Best Buy did not stock the replacement battery for it, had to purchase this one which was a bit larger in capacity. It was installed to power our tankless water heater for about 15 seconds until our stand by generator kicked in. No power outages yet but am confident that this unit will do the job. The previous unit was put into service after procuring a replacement battery in another application. The power smoothing features help to minimize electrical issues with our tankless hot water heater circuit board. Since owning this and the previous cyberpower unit electrical power issues appear to be non-existent.

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

    Rated 5 out of 5 stars

    Great features for this product

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

    Selected this product over others due to the number of surge protected outlets and battery backup outlets

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

    Rated 5 out of 5 stars

    very reliable

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

    easy to install and very solid preformance. eliminated speed problems I wasd having with my prior modem.

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

    Rated 4 out of 5 stars

    Easy to setup

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

    CyberPower LE850G 850VA battery back-up system, which features surge protection to quickly divert power spikes. It works good on battery but never had a situation to test the power spikes.

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

    Lots of connections

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

    Needed a new battery backup as I have more electronics and the battery died on a smaller unit, works so far. Have one of these hooked up to my pc setup and works just fine.

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

    Rated 5 out of 5 stars

    Great UPS for the price

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

    Worked well. Haven't had a power failur yet, but was easy to install (just plug in the cords).

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

    Rated 5 out of 5 stars

    Great value and protection.

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

    Offers great protection and peace of mind. Have used this brand for years and it has never failed me.

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

    Rated 5 out of 5 stars

    CyberPower battery back-up

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

    I bought this a few weeks ago to help keep my internet up and running during a power outage due to a lack of cell phone coverage where I live. I can say that it has worked flawlessly. I haven't used the software that is included but if the power goes out the internet is still working. These backups are great to have and I have been impressed so far.

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

    back up battery works as expected

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

    My computer no longer shuts down due to interruptions in power and I don't worry about it during storms. I'm happy that the Geek Squad guy told me to get it before my hard drive was damaged.

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

    Rated 5 out of 5 stars

    Great Backup and Surge Protection

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

    It has a lot of plugins and some are surge protected. A great buy and asset to any business.

    I would recommend this to a friend