Skip to contentGo to Product SearchGo to Footer
Gift Ideas
Main Content

Customer Ratings & Reviews

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 41 Showing 801-820 of 1,780 reviews
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Works gud

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

    Seems pretty good to me lolol idk man it works when not plugged and stuff

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

    Rated 5 out of 5 stars

    UPS

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

    Excellent UPS! Great value for the cost. Small footprint with plenty of power.

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

    Rated 5 out of 5 stars

    Great Battery Back-up

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

    This battery back-up was easy to install and charge up. Worked like a breeze and I'm happy with that.

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

    Rated 5 out of 5 stars

    Works Great

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

    I usually buy APC battery backs ups but the price of the Cyber Power was considerably less. So far works great.

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

    Rated 5 out of 5 stars

    Just Works

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

    Just had my first outage with this UPS and it did exactly what it was supposed to.

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

    Rated 5 out of 5 stars

    It worked

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

    Got this to run wifi and internet phone during power outage, it work like it was suppose to

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

    Rated 5 out of 5 stars

    ups

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

    This was easy to set up and works fine right out of the box.

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

    Rated 5 out of 5 stars

    Great Product

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

    This battery back-up comes in handy when the power goes out on rainy nights.

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

    Rated 5 out of 5 stars

    Small, works well, good brand..

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

    I keep it under a desk, and have the house router, smart hub plugged in to the backup.

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

    Rated 5 out of 5 stars

    Cyberpower battery backup

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

    I purchased the Cyberpower battery backup to protect our new 70” TV. Works as it should. So far so good!

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

    Rated 5 out of 5 stars

    Piece of Mind for the Wireless Router

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

    I got this as a backup to the power on my wireless router. It was easy to set up.

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

    For power outages

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

    I got this because my computer was shutting down for voltage "sags". From the description, I thought this product would solve that problem. When it did not, I emailed CyberPower and they recommended a diff. product of theirs that would solve it - but Best Buy did not sell that one. 50-mile round trip to return and 10doll more for 2nd product. Both products have great software logging to check on if events occurred. Computer has been recovering but these products will save your work and protect computer for sure. Lost a star only b/o description. You can only set this one to max of 101V so basically for power loss.

    No, I would not recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Works great!

    |
    |
    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I have this to have enough time to call the power company. Where I live, my cell is not good.

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

    Rated 5 out of 5 stars

    Excellent product

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

    Product is great and easy to use. We bought 2 and are very happy with this purchase.

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

    Rated 5 out of 5 stars

    Too early to rate. Give me a couple of years.

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

    It works great so far. I bought to replace an APC unit which expired. Not sure how to rate it soon.

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

    Rated 5 out of 5 stars

    Cheap UPS battery

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

    Purchased as a replacement for an APC 750va - does the same job for $10 less. A good bargain.

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

    good one

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

    I have had no trouble with this and it was just the size I needed to be placed under my desk

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

    Rated 5 out of 5 stars

    Great investment...

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

    Excellent protection from those pesky short power outages.

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

    Rated 5 out of 5 stars

    Great Battery

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

    My son uses this battery backup for his new gaming computer, and it seems to be doing great, no compaints

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

    Rated 5 out of 5 stars

    Dependable item

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

    The product works well. I use it in a dental office setting

    I would recommend this to a friend