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Customer Ratings & Reviews

$64.99

Customer reviews

Rating 4.7 out of 5 stars with 1968 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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95%would recommend to a friend

Customers are saying

Customers commend the 450VA Battery Back-Up System for its battery life, performance, compact size, surge protection, affordable price, and ease of use. Many appreciate the generous amount of outlets available. However, some customers have noted the absence of a USB port, while others have mentioned concerns about noise, weight, and alarm issues.

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 96 Showing 1,901-1,920 of 1,968 reviews
  • Rated 5 out of 5 stars

    Great surge protector.....so far

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

    No issues. Wont know until power goes out or we get hit by lightning. So far so good

    I would recommend this to a friend
  • Rated 2 out of 5 stars

    Failed with power outage

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

    We had a power outage last week and the connected TV and entertainment center connected lost power. Two hour backup battery???

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Hello Edward, run times will vary based on the power drawn from the unit. An entertainment center is going to draw a lot more power than a router or modem. If the unit was unable to provide backup power altogether, please reach out to our support team at 877.297.6937 and we'd be happy to assist! CyberPower

  • Rated 4 out of 5 stars

    Works as Expected

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

    I'm using the UPS with my network equipment, and it is working as expected. No power outage has occurred yet, so I do not know how it handles that.

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

    Great backup box

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

    We are very pleased with the backup box a great value for the price.

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

    Good for computer

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

    Bought this after I had some power surge. After looking online this had Good reviews so I bought it. I love how this works

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    Dies in a year and company warranty is a joke

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

    Dies in less than a year and company will not honor the warranty

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      We would be happy to walk through the process with you to offer a solution or recommend a product that better suits your needs. We can honor the new product warranty manufactures defects 3 years form the date of purchase. There are only several reason why we replace the product under warranty, and these practices are industry standards. They usually include big and powerful products being plugged into a small battery, and high voltage devices that the UPS is not designed to handle. We would be happy to replace the product if it is being used under normal conditions and look forward to speaking with so we can help. Please call us at 1.877.297.6937. CyberPower

  • Rated 1 out of 5 stars

    No good battery pack

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

    This battery pack takes over 8 hours to charge. I would not recommend it.

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Thank you for your review! It’s completely normal for the battery in a new UPS to slowly discharge between the time it was manufactured and when it's purchased and put into use. Because of this, it's standard practice to charge the unit for up to 8 hours when you first receive it. Additionally, if the battery is completely depleted while running on backup power, it can take another 8 hours to fully recharge. This is typical for UPS units, regardless of the brand. CyberPower

  • Rated 1 out of 5 stars

    Shuts itself down and crashes server

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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.

    Unfortunately after a year of using this backup, it has never worked in our frequent power outages. It shuts off several times a month with no warning, crashing my server. I just have 1 server, 1 computer, and 1 monitor attached. I haven't found any solutions online to keep it from shutting down. I'm now looking for another brand.

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Hello Maxx,
      Thank you for taking the time to write a review. Our Technical Support team would be happy to assist and can be reached at 1.877.297.6937 (option 1). We look forward to helping resolve the issue. CyberPower

  • Rated 1 out of 5 stars

    NO OK TO USE ELECTRONICS ALL

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    Posted . Owned for 5 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    ALL PRODUCT HAKE NOT WORK PERFECTLEE NEED DRICTE POWER TO ALL ELCTRONICS TO WORK PROPLEE

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Hello, in order for a UPS to function properly it will need to be plugged directly into a grounded outlet and any equipment will need to be plugged directly into the UPS with no extensions, adapters or power strips in between. For more information, please reach out to us at (877) 297-6937. Thank you for your review. CyberPower

  • Rated 4 out of 5 stars

    protection

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

    needed some protection agains occasional power outages or surges this works just fine

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    False hope

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

    I purchased this for my Alienware laptop and it failed badly.

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Hello, this unit is one of our smallest battery backup units and can only handle a 260w load, which your gaming PC likely exceeds. Please feel free to contact us at: (877) 297-6937 for assistance finding you a suitable UPS for your application. Thank you for your review. CyberPower

  • Rated 1 out of 5 stars

    Needs to be removed off the shelf

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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.

    Complete garbage. The directions are simple but the performance of this unit does not match the directions. The performance is not simple because they do not perform.Be advised I purchased two of them and they both had the same outcome.

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Hello, If you are wiling, we'd like to make sure the unit is suited for the expected performance as off the shelf failures are not common. Please give our support team a call at 877-297-6937 and we'd be happy to assist as the SE450G1 comes with a 3 year warranty. We hope to hear from you! CyberPower

  • Rated 1 out of 5 stars

    Power supplier never kept anything on.

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    Posted . Owned for 9 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It Never worked for me, I paid for it,it never worked, unless I didn't hook it up right, wasted money.

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Hello TerryJ, we are sorry to hear that this happened with this device. For further assistance and troubleshooting to determine why this unit is behaving this way, please reach out to our Technical Support team at 877-297-6937 Option 1. Thank you for the review. CyberPower

  • Rated 1 out of 5 stars

    Battery backup is not reliable

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    Posted . Owned for 9 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The battery backup on this unit does not always kick in when it should. When there is a power outage/flicker, it also does not re-engage itself, seemingly, so that it will build up charge again. The manufacturer needs to rethink this product design.

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Hello KatHawkTex,

      Thank you for taking the time to write a review. We are always looking to improve and value customer feedback. We suggest contacting our Technical Support team to troubleshoot the issue, you can contact us at 1.877.297.6937 (option 1). Please know we will use your comments for future product development.

  • Rated 1 out of 5 stars

    Battery backup unit

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

    The first time I tried to use it the power button stuck down and would not return. Unit would not turn on. Store would not replace it and now I have to spent $20 to ship it back for replacement.

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Didn’t work for me

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

    I returned it, because after I had a power outage it didn’t keep my computer on for hour. I also purchased two; one for my modem and one for my computer.

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Hello, A UPS battery backup is not meant for extended use. They are designed to provide enough uninterrupted power to be able to shut things down properly in an event where power is lost. CyberPower

  • Rated 1 out of 5 stars

    Non-Charging Charger

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

    When charging the iPhone, the device will stop charging after about 30 minutes. When this occurs, the LED will continuously blink indicating a foreign object is on the charger.

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Hello, The LED light on the unit will blink if the unit does not detect utility power and is running off of battery power. If you are using this as a portable battery, that is not the intended use. If the unit is set up properly and you are experiencing issues, please reach out to our support team at 877-297-6937 for assistance as we'd love to hear from you. Thank you for submitting your review! CyberPower

  • Rated 1 out of 5 stars

    Waste of Money

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

    Didn't last a year before the battery gave out... Oh uses a hard to find battery... Spoiler Alert. New battery on Amazon is about the same price as this backup unit...

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Hello Harley, The SE450G1 is classified as having a non-replaceable battery and it is recommended to be replaced when it reaches end of life by CyberPower. This unit, however, comes with a 3 year warranty from date of purchase. Please reach out to our support team at 877-297-6937 and we'd be happy to assist. CyberPower

  • Rated 1 out of 5 stars

    Better ones out there

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

    Lasted 13 months and died and unless you buy the extended warranty, you have to but new one every year.

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      The SE450G1 UPS comes with a 3 year warranty. Please reach out to our support team at 877.297.6937 for assistance. We'd love to help! CyberPower

  • Rated 1 out of 5 stars

    meh

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

    did not even fit the power cord to my sons PC after the salesman told me this is the right one

    No, I would not recommend this to a friend
    • Brand response from TechSupport
      Posted .

      Hello Gamer,
      The SE450G1 is equipped with NEMA 5-15 receptacles which is the standard plug used in North America. If you are experiencing issues or have any questions, please reach out to our support team at 877-297-6937 and we'd be happy to assist. We hope to hear from you! CyberPower