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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:
Your price for this item is $84.99

Customer reviews

Rating 4.7 out of 5 stars with 1780 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.6 out of 5 stars

  • Quality

    Rating 4.6 out of 5 stars

  • Ease of Use

    Rating 4.8 out of 5 stars

Pros mentioned filter

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 69 Showing 1,361-1,380 of 1,780 reviews

  • Battery

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

    Great to use for your home computer just in case you have a power outage and need to turn your computer off.

    I would recommend this to a friend

  • Exceptionally durable power provider

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

    This system is exceptional for a home office with lots of power needs. It is a rugged product with an extensive battery back-up.

    I would recommend this to a friend

  • Great Experience

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    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Slick purchase! Ordered on-line, picked up at Sandy Utah location and reasonably priced.

    I would recommend this to a friend

  • Good Price, Nice Size

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

    Its Square, it's Black it does the job. I use it for my internet. Modem and router. Cyber Power is good stuff.

    I would recommend this to a friend

  • Nice back-up power.

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

    Bought this to replace one that had a bad battery. Works great.

    I would recommend this to a friend

  • Where have you been? YES!

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

    Total necessity for power outages! Internet doesn't go out on short intermittent outages! YAY!!!!

    I would recommend this to a friend

  • Easy to use and does the job.

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

    The CyberPower 650VA was ready to go out of the box.

    I would recommend this to a friend

  • recomend

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

    I can't recommend enough having one of these devices on a TV, computer, stereo equipment or any electronics you have.

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

    Easy set up

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

    Works great. Great value considering capability and price

    I would recommend this to a friend

  • Thankful

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

    During recent storms, I was able to normally shutdown computer during power outages.

    I would recommend this to a friend

  • A good safety measure

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

    With all the power outages we had been having, I decided it was time to really protect my elactronics.

    I would recommend this to a friend

  • Works with Synology

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

    This CyberPower back-up system plays well with Synology NAS (there's some nice features available)

    I would recommend this to a friend

  • Lights Out

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

    Nice backup unit to have when your power goes and you need something to give you a little extra power.

    I would recommend this to a friend

  • Reasonable price

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

    With so many electrical outages. needed to get a back up so trying this brand again

    I would recommend this to a friend

  • Good UPS

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

    Bought this to be the ups for my old 300w computer when I purchased another. So far, so good.

    I would recommend this to a friend

  • Response

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

    Have bought many of these backup batteries,,,,,,just wish they would last longer !!

    I would recommend this to a friend

  • A good power supply

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

    I needed a battery for my desktop and saw this one at BestBuy. I look it over. It had a lot of what I was looking for on it. So I got it. It does a good job for me. But I would like to have a bigger one at sometime.

    I would recommend this to a friend

  • CyberPower 650VA Battery Back-up

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

    I bought two. The back-ups are more powerful than the replaced units and less expensive.

    I would recommend this to a friend

  • Works great

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

    Haven't had a problem yet and it is used in a harsh, hot and dusty environment. Powers everything great without a complaint.

    I would recommend this to a friend

  • Great back-up battery

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

    I haven't had a power outage so I can't tell how good it really works, but power is transferring though it just fine.

    I would recommend this to a friend
Page 69, Showing 1,361-1,380 of 1,780 reviews
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