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  • Front. CyberPower - 650VA Battery Back-Up System - Black.
  • Alt View 11. CyberPower - 650VA Battery Back-Up System - Black.
  • Alt View 12. CyberPower - 650VA Battery Back-Up System - Black.
  • Alt View 13. CyberPower - 650VA Battery Back-Up System - Black.
  • Alt View 14. CyberPower - 650VA Battery Back-Up System - Black.

CyberPower - 650VA Battery Back-Up System - Black

Model:
SX650U
SKU:
6239409
Highly rated by customers for:
$84.99

Customer reviews

Rating 4.7 out of 5 stars with 1791 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 4.8 out of 5 stars

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Cons mentioned filter

95%would recommend to a friend

Customers are saying

Customers have good things to say about the 650VA Battery Back-Up System, especially its long battery life, overall performance, and ease of use. Many appreciate the reasonable price and adequate surge protection, as well as its convenient size and handy USB ports. Some customers have noted minor issues such as a slight humming noise and, in rare cases, random alarm activations. A few have mentioned its weight and isolated incidents of overheating.

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 63 Showing 1,241-1,260 of 1,791 reviews

  • Reasonably priced UPS for basic backup needs

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Reasonably priced UPS. Using it to provide backup power for cable modem, wifi router, and laptop with external monitor. Have not tested how long it will last yet. Wish it had some display of battery status.

    I would recommend this to a friend

  • Battery back up

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    Posted . Owned for 10 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a good product. it was great to have during stoms to ensure work electronics functioned

    I would recommend this to a friend

  • Good product

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Good product but didn’t work for what I initially intended it for which was to prevent my 3d printer from failing due to power spikes. Had to get one that was 1500va

    I would recommend this to a friend

  • CyberPower - 650VA Battery Backup

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a fantastic product and Best Buy had an excellent sale price. This is much better than just a surge strip.

    I would recommend this to a friend

  • Excellent PSU with USB charging port

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

    I love this unit. It keeps all my connectors in a tidy space and the USB charger is fantastic. I no longer struggle with one plug taking up two spaces. Well-constructed and will last a lifetime

    I would recommend this to a friend

  • excellent source of backup power and protection

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    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    excellent source of backup power and protection. I have this connected to a few computers used to check quality of manufactured items and it has worked as expected.

    I would recommend this to a friend

  • Great Back-Up For the Price

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It works great. We have a 600W PS gaming machine hooked up to it and it works great. We've had a couple of power outages and were able to power down the machine just fine.

    I would recommend this to a friend

  • Works great

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought it after a lightning strike killed my PlayStation. So far, it’s done what I expect. Ow we are just waiting on another lightning strike to really test it out.

    I would recommend this to a friend

  • Back Up To Save Your Backside

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Well designed and stable, this battery back up saved my hide more times than I care to acknowledge. Well built, sturdy yet not too heavy!

    I would recommend this to a friend

  • Ups

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    So far so good. Installed software on my computer.

    I would recommend this to a friend

  • Tiger

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

    It give me peace of mind & keep my computer safe..

    I would recommend this to a friend

  • Good buy.

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I like it. I have 3 of them in my house. They save me from outages.

    I would recommend this to a friend

  • Battery power backup

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I haven’t loss power yet, I bought for wifi / internet backup!

    I would recommend this to a friend

  • works great

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works great, good for cell phone chargers where usb connects from the side, but vertically large plugs tend to block ports.

    I would recommend this to a friend

  • Replacement for failed Battery Backup

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The CyberPower - 650VA Battery Back-Up System is just what I needed to replace another Battery Back-up that failed after 5 years.

    I would recommend this to a friend

  • I believe in CyberPower

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

    Bought as a gift. Hopefully it will save my family member 158 dollars next time there is a power fluctuation.

    I would recommend this to a friend

  • Great product

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    excellent product, only the instructions are not complete but there is not much to understand to activate it

    I would recommend this to a friend

  • Power

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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.

    Device has perfect backup power for phone systems and related equipment.

    I would recommend this to a friend

  • CyberPower Battery Back-Up System

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

    Our power fluctuates from time to time and we need a battery back-up system at those times. This system provides the power we need so we don't lose important information.

    I would recommend this to a friend

  • Great UPS unit. Replacing prior CyberPower UPS.

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Was happy with my last CyberPower UPS. It lasted well beyond the expected time. With this said, I decided to stay with the same brand when purchasing my new one.

    I would recommend this to a friend
Page 63, Showing 1,241-1,260 of 1,791 reviews
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