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$64.99

Customer reviews

Rating 4.7 out of 5 stars with 1974 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 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 93 Showing 1,841-1,860 of 1,974 reviews
  • Rated 1 out of 5 stars

    Didn't work as intended

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

    I bought this back in October of 2024 to protect my computer tower in the event we lost power again. It turned on and from what i could tell the power light was on and my computer is now protected. Well, just 2 days ago the power went out and the house went dark and so did my computer tower. The battery backup did not work at all. It turned off too. I was very surprised because best buys products usually work just fine. But not this. I am very disappointed.

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

      Hello! Take care to ensure you are not overloading the battery and only place critical items like the tower and a single monitor in the Battery supported outlets, and move all non-critical items to the Surge Side. I would encourage you to reach out to our tech support at https://www.cyberpowersystems.com/support/submit-a-support-ticket/ or calling us at 1.877.297.6937 so we can fully diagnose the issue as well as offer product warranty if need be. Have a good day! CyberPower

  • Rated 3 out of 5 stars

    Battery back up power strip

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

    If you have frequent power outages this can help protect your electronics. However, it’s lifespan is only two years or less.After that it won’t hold a charge strong enough to protect you from long outages.

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

      Hello BestBuyer, Lead acid batteries have an average life of 3-5 years and the SE450G1 comes with a 3 year warranty from date of purchase. If you've only had the unit for 2 years, 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

  • Rated 3 out of 5 stars

    Regular UPS device

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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 regular UPS product. Battery is not replaceable without special tools. I'll have to deal with it in about 18 months when the battery is wasted. Clunky. outlets too close together to accomodate power supplies. But it works.

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

    Rated 4 out of 5 stars

    Good value, but limited

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

    Good value for a backup with minimal features. One complaint is the alignment of the three prong plug receptacles. Should be rotated 90 degress to make it possible to plug in more bulky power cords

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

    Rated 5 out of 5 stars

    Great cost

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

    There are many other pricier options without the features. After two major storms this has performed as advertised.

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

    Rated 1 out of 5 stars

    Dead Upon Opening

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

    I plugged this in and let it charge up (Needs to charge 8 hours before use) then I plugged in 3 monitors and my desktop so it was not fully loaded. Then it started beeping out of no where and the beep stood for the battery being overloaded. So then on the website it said unplug everything then unplug it from the wall so it runs off the backup battery and if it kept beeping for the battery being overloaded then the battery has malfunctioned. Upon doing this it kept beeping so I promptly returned it and got a regular surge protector.

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

      Hello Gabe,

      First of all thank you for taking the time to write your feedback on this product. We are always looking to better ourselves and value customer insight. In the future if you have questions regarding a product and are unable to find the answers please feel free to contact tech support at 1-877-297-6937 (press 1).

  • Rated 3 out of 5 stars

    On sale yeahh

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

    The price is a little more expensive when in Costco you find one with more power 325 watts for 5.00 less, and take in consideration that this one was on sale otherwise it would cost me more

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

    Seriously consider what peace of mind means to you

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    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This UPS did not protect my equipment from an over current event. I purchased this UPS to surge protect my entertainment center as well as provide battery backup for my router and modem. My house was hit by some sort of surge, and the only electronics that suffered were all plugged in to this UPS. I have always protected my electronics by a beefy surge protector that had connected equipment coverage. I was careful to make sure that the running wattage of the connected devices would not overwhelm the unit. I seriously doubt the credibility of Cyberpower's surge protection claims. I have been in a constant battle with horrible customer support about connected equipment claims ever since the incident that bricked my entire networking and entertainment setup. This has been ongoing for more than three weeks, if not more than a month. I have yet to hear whether any of my electronics will be covered. At this point, I'm at a total loss for all of my connected devices. I have other outlets in the house protected by another brand of UPS that I also purchased through BB and I will only use that brand from now on.

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

      Hello jhow, We are sorry to hear that the process has not met your expectations. We aim to be the ultimate ally in power and the timeline you provided does not reflect that. Please reach out to us directly at 877-297-6937 option, and we can make sure the case is being handled appropriately. We hope to hear from you! CyberPower

  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Great so far

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

    Works as it should so far. It does have to be charged for 8 hours before plugging things into it.

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

    Rated 5 out of 5 stars

    Power back up

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

    After power shortage I got this for my desktop. Surge protection included. Works as described

    I would recommend this to a friend
  • Rated 3 out of 5 stars

    Good, but not APC

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

    I needed to replace my APC unit, but due to COVID there is not a lot of stock to choose from. Went with this one for the time being, so far so good... I prefer APC though

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

      Hello, Is there a reason you'd be able to share as to your preference of UPS units? If that's something you're willing to discuss, please reach out to our support team at 877-297-6937, as we are always looking to improve our products. We hope to hear from you! CyberPower

  • Rated 3 out of 5 stars

    Not spending $200+

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

    It’s the only one they had, I wasn’t spending 200+ for a better one.

    No, I would not recommend this to a friend
  • Cons mentioned:
    Weight

    Rated 2 out of 5 stars

    Scam

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

    Very bad power brick it is heavy like a brick ugly and short cable and overpriced

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

      Our battery backups do tend to be a bit heavy as they have a sealed lead-acid battery within them, but they do a great job of protecting your connected equipment from brownouts and other issues with power. If you have any questions or would like to have your unit replaced under warranty, please contact our Technical Support team at 1-877-297-6937 and select option 1. Thank you for your review Yania! CyberPower

  • Rated 1 out of 5 stars

    Never again!!!

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

    I bought this power pack back in February. It is now December and the time I needed it to work, if failed miserably. We had a tornado in my area recently and the power went out. I was working on a paper for school at the time. To my dismay, once the electricity went out, the power pack began beeping multiple beeps in succession. That indicates the pack is about to fail. The pack turned off before I was able to save or logout of my computer. This piece of crap did not live up to the hype

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

      Hello Raphael, I understand your UPS did not provide any battery backup. If the UPS senses a power outage the UPS will beep every 30 seconds letting you know there is a power outage. This UPS also comes with a 3-year warranty and can be replaced. Please contact our technical support team at 1.877.297.6937 and dial 1 for technical support. CyberPower

  • Pros mentioned:
    Price

    Rated 5 out of 5 stars

    Reasonable ups

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

    Reasonably priced ups for home computer. Appears to be working the way it should

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

    defective in just 6 months.

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

    bought this in April, today its clicking nonstop and isn't powering anything. switched it out for another backups and everything is fine.

    No, I would not recommend this to a friend
  • Rated 3 out of 5 stars

    What the beep

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

    Didn't meet my expectations. Didn't keep office items charged during a power outage the way it advertised to. Irritating beeping sound didn't help.

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

      Hello Lenny, Thank you for submitting your review. The run time you get from the unit will be dependent on the amount of power being drawn. You can also silence all of the alarms except for the overload indicator. If you feel the unit isn't working as it should or just have any questions, please feel free to contact our support team at 877-297-6937. We'd love to hear from you! CyberPower

  • Rated 2 out of 5 stars

    Faulty model - surge protected outlets failed

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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 2 of these around 2 years ago and they worked amazing for the California skips with PG&E always having so many blackouts. Just bought another one 27 Jun and after one power outage all four surge protected outlets stopped working. If I plug anything into the battery powered side it just beeps constantly. Will look for a new brand for my next UPS.

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

      The SE450G1 has a 3 year warranty from the date of purchase. Please reach out to our support team at 877-297-6937 and we'd be happy to assist. Thank you for your review! CyberPower

  • Pros mentioned:
    Price

    Rated 5 out of 5 stars

    Good PC Protection

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

    Works Great at a good price. Plenty of plugs and room for adapters

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

    Rated 5 out of 5 stars

    Surge protector

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

    Great item with loads of protection for your sensitive machines.

    I would recommend this to a friend