Ultimate Upgrade SaleEnds Sunday. Limited quantities. No rainchecks.Shop now

Skip to contentGo to Product Search
Main Content

Customer Ratings & Reviews

$84.99

Customer reviews

Rating 4.7 out of 5 stars with 1791 reviews

Rating Filter

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

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 55 Showing 1,081-1,100 of 1,791 reviews
  • Rated 4 out of 5 stars

    Came Highly Recommended

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

    The power has not gone out yet so I can't really say how it works. It seems durable and sturdy with one exception. When I initially pulled it out of the box the battery was able to move a little inside the products casing. Didn't think that was a good thing with the weight of the battery. However, it came highly recommended by someone I really trust with these type of things.

    I would recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Hello Thomas, If the movement of the battery becomes an issue, please reach out to our support team at 877-297-6937 and we'd be happy to assist. Thank you for submitting your review! CyberPower

  • Rated 5 out of 5 stars

    Love the plug layout

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

    What's nice about this particular model is the holes for the plug prongs are turned 90 degrees from typical layout so it accommodates larger (wider, transformer) plugs better.

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

    Rated 5 out of 5 stars

    Very good for price paid.

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

    Great back up for computer printer modem and phone.

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

    Rated 5 out of 5 stars

    Effective

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

    I have experienced outages and this keeps me up and running

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

    Rated 5 out of 5 stars

    Still working great after months of use

    |
    |
    Posted . Owned for 8 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought this on sale... works great with no problems

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

    Good so far

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

    I've always used the big brand UPS, so now I have three of them (several years old) that only put out about 85 volts in back-up mode and scream the entire time despite having new batteries. This one is in the 115 volt range. My only complaint is the plug orientation. Wall warts end up blocking adjacent outlets. Some reviewers broke the power button, but if you read the instructions they say to press and hold. It's an electronic switch, not mechanical, so just a gentle press and wait a second or two.

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

    Battery Backup

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

    No issues. Works well. Small and compact for desktop use.

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

    Rated 5 out of 5 stars

    Great!

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

    This works great for what we needed! Highly recommend!

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

    Rated 4 out of 5 stars

    Great Battery/Surge Protection

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

    Too early for 5 stars... needs to show the product is reliable for long term. But, so far so good and I would buy again.

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

    Rated 4 out of 5 stars

    great battery pack keeps my wife happy

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

    we are totally happy with our new Battery Pack because our area is always hampered with power failures,this pack keeps us going.

    I would recommend this to a friend
  • Cons mentioned:
    Noise

    Rated 3 out of 5 stars

    Works

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

    The product is ok but the loud beeping when a problem occurs is the worst.

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

    Rated 4 out of 5 stars

    Great battery backup

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

    Just in time for the major storms that came through. When power went out I was still charged up with this battery pack.

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

    Helpful when in area with occasional power issues.

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

    We live right in the main path of tornado alley... Moore, OK. We have erratic weather and get lots of power drops throughout the year. Since I'm working from home, have been purchasing these to put on our expensive electronics to keep things up during those short outages.

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

    Good Value

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

    I have had several Cyber Power backups as well as several APC devices and Cyber Power has worked as well for a lower price. The software allows for automatic shutdowns. Reserve capacity is plenty for my Imac. This is a home installation and I don't need to keep working during an outage--just want to protect the equipment.

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

    Rated 5 out of 5 stars

    good battery

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

    Great battery , should have a good long life. Thnx

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

    Rated 5 out of 5 stars

    Great price

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

    You can’t beat it for the price. So we bought two!

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

    Rated 5 out of 5 stars

    Does what it does

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

    Works as advertised, not much else to say. Good value.

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

    Rated 4 out of 5 stars

    Medium level battery backup

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

    Medium level battery backup good for short power interruptions and equipment protection.

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

    Power surge great

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

    Good battery and help protect my PlayStation and tv from power outages, which are a lot here in PR.

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

    Excellent UPS

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

    Excellent UPS. Handles everything in the office from computer, monitors, printer and router with no issues.

    I would recommend this to a friend