Last-Minute SavingsLimited quantities.Shop now

Skip to content
Gift Ideas
Main Content

Customer Ratings & Reviews

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

Customer reviews

Rating 4.7 out of 5 stars with 1023 reviews

Rating Filter

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 16 Showing 301-320 of 1,023 reviews
  • Pros mentioned:
    Surge protection

    Rated 4 out of 5 stars

    Good for Florida weather

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

    Great protection for the lightning capital. Without good surge protection and battery back up, I could wait days to do a days work.

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

    Battery back up system

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

    Love this back up battery. More outlets and more power for time to properly shut down my programs and computers.

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

    Rated 5 out of 5 stars

    CyberPower - 850VA

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

    First one was basically DOA. Made a constant beeping sound when plugged in. Geek squad could not figure it out either. Guess that can happen from time to time. Was given and exchange and the new power supply works fantastic. Love the amount of outlets! Software download is pretty nice as well to monitor the unit.

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

    Rated 5 out of 5 stars

    Works like a charm!

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

    I purchased this to replace an older unit that had completely failed. All the features are much more updated and works perfectly! I like the fact that certain outlets don't draw from the batter when the power goes out. It gives you a nice flexibility to choose only those devices you want to draw from the battery.

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

    Very cool device....ready and protected !!

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

    just purchased alot of expensive audio and visual equipment ..... i feel so much better knowing my investment is protected.

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

    Great UPS for the price

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

    I bought this to replace a bad APC UPS that went bad. It works well and I like the number of and the spacing of the outlets..

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

    excellent

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

    Just what we needed to protect our desktop, monitor, router, and network hard drive.

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

    Does the Job

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

    I have my network server on this and it is working great. The true test is how long it will last before the battery dies.

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

    Rated 5 out of 5 stars

    Well priced, efficient UPS

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

    My UPS recently failed and was a unit that was sealed such that the battery is not replaceable. I bought this for it was well priced, had good specifications as well as an easily replaceable battery. It has been tripped a few times due to storms and has protected the attached equipment without failure.

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

    Nice battery backup

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

    It works as it's described. It has enough outlet to plug in your necessary items to it and protect them.

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

    Rated 5 out of 5 stars

    Works Great

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

    Bought this as a replacement for a 10 year old back up that was no longer holding a charge. Worked great as a back-up power when a construction crew cut the power while I was working in the middle of the day. Glad I checked the old one 2 months earlier. All my work saved in time.

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

    Great product for the money.

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

    This product has great quality for the money spent. This manufacturer makes a good well built product.

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

    Nice Power Backup

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

    No issues with this model. Has been working well. 5 power backup outlets plus 6 more standard outlets.

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

    Rated 5 out of 5 stars

    Does the job

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

    I used APC for years, and was happy with them. But lately it began to start beeping (constantly) every morning anywhere from 4am to 6am . Very annoying. It was old so it was time to get a new one. After reading reviews for various setups. I settled on this one, and have bee very happy with it performance.

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

    works for us!

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

    it was time for a new battery back-up system. After reading reviews on line we decided on this one.

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

    Great

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

    It is working great. I do not have any problem so far. It will take time to know whether it is good

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

    Rated 5 out of 5 stars

    Best Backup System I've purchased

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

    Best Backup System I've purchased so far. I needed something for my computer as my home power can cycle off then on again. And that can screw up your computer, so now if that happens I hardly notice as my computer does not shut down anymore when the main power cycles off then on again...

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

    Perfect for my needs

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

    I bought this because my old battery backup gave up. I like the layout of plugs and hope to get the same life.

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

    Great product and easily installed.

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

    This product was purchased to replace an outdated battery backup system and was easily installed.

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

    Rated 5 out of 5 stars

    One step up from my last USB

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

    I have been using CyberPower 625VA and decided to step up this time. I have it connected to the home computer and internet modem. When the power goes out, I like the ability to turn off the electronics properly. I also like the ability to turn off the sound on this model.

    I would recommend this to a friend