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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 50 Showing 981-1,000 of 1,023 reviews
  • Rated 4 out of 5 stars

    protection needed

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

    Battery backup surge , hope it protects next storm season

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

    great product

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

    great product great price work well satisfai well thanks

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

    Love it

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

    I love it. A lot of plugs and does what it claims.

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

    Good power surge

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

    This works great for hooking up multiple electronics.

    I would recommend this to a friend
  • 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.

    Good every level. Not much time but does the trick.

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

    Doesn't help for internet connections

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

    Seems to work fine for power surges. The "telephone" jack is just that for a land line telephone. They should have put a RJ-45 interface to protect a network line, which is more common today than a land line telephone

    No, I would not recommend this to a friend
  • Rated 3 out of 5 stars

    Not that good

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

    Every time I send something to the printer it trips the Surge protector back up that's on my computer and it makes the computer restart. Works fine after I disconnect the printer from the surge protector outlet

    No, I would not recommend this to a friend
  • Rated 3 out of 5 stars

    Has some fault

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

    Decent enough but keeps shutting power to all devices when my printer comes out of sleep mode.

    No, I would not recommend this to a friend
  • Rated 3 out of 5 stars

    ho hum

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

    i guess it is good.... does what I expected. Has enough plugs and gives me piece of mind.

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

    Disappointed

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Have to turn upside down for batteries to stay connected.

    No, I would not recommend this to a friend
  • Rated 3 out of 5 stars

    Good

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

    Good nice work I really liked it. Good work thank you

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

    Just alright

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

    It will do the job but not up to the mark. does not even last longer.

    No, I would not recommend this to a friend
  • Pros mentioned:
    Surge protection

    Rated 1 out of 5 stars

    Not Worth It

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

    This is great as a standard surge protector. But our power went out and it only powered our components (SmartThings Hub, Router, Modem, TV) for ~20 minutes. I would return it but it's past the return period.

    No, I would not recommend this to a friend
  • Rated 2 out of 5 stars

    Think carefully on this one

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

    Not sure this is a good fit. Its rated 800va but doesnt seem to supply power in the advent of an outage as long as the 600va APC device it replaced despite no change in the load. Im probably going back to APC next time.

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    DIDN'T WORK

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

    DID'NT WORK OUT OF THE BOX. HAVEN'T EXCHANGED IT YET

    No, I would not recommend this to a friend
  • Rated 2 out of 5 stars

    cant handle the load

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

    power supply to the computer is 850W 80plus gold. the beeping is consistently multiple times per day, and non stop when the computer is under load. if you have two GPUs and are running the computer hard, this surge protector cant handle it.

    No, I would not recommend this to a friend
  • Rated 2 out of 5 stars

    inability to maintain small load or faulty device

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

    Load stated falls short, very short when connected to a device drawing way below max amperage draw. This product is only good for well surge protector or a oscillating fan. Factual issue with this device.

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    OMG its alive

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

    This item is alive. I plugged it in, WIN7 loaded the drivers, then it just took over the computer and my coffee maker. I had to throw the main breaker to my house to stop its take over of all my electronics!!

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Did not protect at all in a power surge.

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

    Among devices attached, I lost a computer, an ooma telo and 2 print servers

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    poor quality

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

    In less than 6 months half of the outlets on one side stopped working

    No, I would not recommend this to a friend