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Customer Ratings & Reviews

Your price for this item is $45.99
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Customer reviews

Rating 4.7 out of 5 stars with 1032 reviews

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Rating by feature

  • Value

    Rating 4.5 out of 5 stars

  • Quality

    Rating 4.6 out of 5 stars

  • Ease of Use

    Rating 4.7 out of 5 stars

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97%would recommend to a friend

Customers are saying

Customers are delighted by the 650VA Battery Back-Up System's long battery life and reliable surge protection, praising its performance and ease of use. Many appreciate the system's value for the price and convenient size. While some find the unit somewhat heavy, the alarm feature has received mixed feedback.

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 22 Showing 421-440 of 1,032 reviews
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Best bang-for-the-buck

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

    It does what it said it would also I have extra Outlets and places so if I need them I have them and it gives me the right amount of wrong time to shut my computer down

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

    Rated 5 out of 5 stars

    Never let me down

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

    I've been using these CyberPower battery backups for years. Good battery life. Never ran out of power on short-lived outages. Good price to performance value.

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

    Rated 5 out of 5 stars

    Great UPS for a good price

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

    I was looking for another smaller UPS to power my computer and this fit that need. For not much more money than a good power strip I have the benefit of the battery backup!

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

    GOOD STUFF YHAT BEST BUY IS KNOWN FOR

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

    I will recommend it for future purchase because it work great and save my equipment

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

    Rated 5 out of 5 stars

    Keeping the desk safe.

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

    After 5 years my previous unit quit working. It gave great service so it was replaced with one from the same manufacturer. No worries for at least 5 more years.

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

    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.

    Bought this for my cellar door entry backup, we put in auto openers and this is in case power goes out, I can still open my doors to get out in case of emergency ;)

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

    Rated 5 out of 5 stars

    Life Saver

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

    This battery backup saved my life. The power went out and lucky I bought this sometime ago. It saved me from having to work on my project in the morning.

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

    Good UPS for network equipment

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

    I needed a ups for a firewall and wireless access point. Unit works great!

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

    Rated 5 out of 5 stars

    great protection

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    Posted . Owned for more than 2 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Can't live without these now. Power always flashing off and on here. Great protection for my electronics.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Good to have for the no electric days

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

    Easy to use just do not put any appliances in it like window air conditioners or electric heaters - only PCs WiFi routers and video game machines

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

    Rated 4 out of 5 stars

    Solid battery back up

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

    This is my second battery backup I got from Best Buy. It works great. I had to purchase these because my computer kept getting fried when the power goes out. Now I don't have to worry about having to fix my comp during black/brown outs.

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

    Rated 5 out of 5 stars

    Did the job for Hurricane Irene

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

    The UPS gave me the opportunity to power down the technology attached to it safety during the recent hurricane. A nice UPS that worked as advertised.

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

    Rated 5 out of 5 stars

    Great value

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

    My last Cyberpower lasted 10 years, upgraded to a 650 from a 450, easy software for mac or pc...

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

    Rated 5 out of 5 stars

    Power on demand

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

    Replaced on old model I couldn't get new batteries for. Never had any problems or had any damaged equipment with any model CyberPower UPS I've owned.

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

    Rated 5 out of 5 stars

    well worth it

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

    this is my 2nd one of these, the first one lasted for years, and if/when your power goes out unexpectedly this thing is a lifesaver for your computer!

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

    Rated 5 out of 5 stars

    Great for home theater

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

    I put this my home theater, it has done a great job protecting my equipment from spikes and allowed me to shut down normal when the power failed

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

    UPS works great

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

    UPS works great. No longer about thunderstorm causing power fluxuations

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

    Plenty of outlets, good software

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

    The SX650G is a good UPS with 8 outlets (4 on battery, all 8 surge protected) and four of them are spaced so transformer blocks can fit. It has phone line protection (sorry, no cable tv protection on this one), and comes with some nice software in the form of PowerPanel Personal monitoring software. I prefer this software over PowerChute from APC because you can monitor how much power your PC is using. They also have a nice 3yr warranty and $100k equipment protection. My only complaint is that the full load run times are short, very short, as in 2 mins. Although if you have so much load that you are maxing out the UPS, its time to upgrade.

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

    Rated 5 out of 5 stars

    Replacement battery

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

    I had the old battery for approximately 10 years when it just quit. No problems with it so replaced with a newer version. Hope this one lasts as long.

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

    CyberPower great brand

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

    I purchased this as we've had many lightning storms this summer and needed power backup for my networking equipment. I work in IT and we have many CyberPower UPS in our organization that have lasted several years. This was a significant consideration since we have also used other brands (TrippLite) that seem to consistently fail within 6 mo - 1yr. The #1 consideration that you need to look at once you have a dependable brand is the amount of VA or Watts the unit can support. Do some research in this area as the amount you need will depend on how many devices you intend to plug into the backup side of the unit. Which reminds me, this unit only has 4 plugs that can be powered by the battery backup, the other 4 are surge protection only. Take that into consideration when purchasing as well.

    I would recommend this to a friend
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