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Customer Ratings & Reviews

$99.99

Customer reviews

Rating 4.7 out of 5 stars with 1059 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

96%would recommend to a friend

Customers are saying

Customers frequently mention the 750VA Battery Back-Up System's great size, reliable battery life, and overall performance. Users appreciate its ease of use, excellent value, space-saving design, and adequate surge protection with plenty of outlets. While some find the plug spacing a bit close and the unit somewhat heavy, the noise level is generally acceptable. Overall, the positive aspects of the product appear to outweigh the minor drawbacks.

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 51 Showing 1,001-1,020 of 1,059 reviews
  • Rated 4 out of 5 stars

    Battery Backup for short outage

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

    Wanted for Cpap but found out may only last less than an Hour

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

    Works well

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

    I like the small form factor compared to a competing brand.

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

    back-up system right size for area we have

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

    Back-up systemI is working well. we are pleased with it.

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

    Seems great but until we have outage, hard to tell

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

    Not much to say but hoping all goes well when it is needed.

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

    Rated 5 out of 5 stars

    Power source

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

    Good value; works great; easy clear instructions and pictures

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

    Great for wall mouting

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

    Great for when you need a battery backup to be wall mounted.

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

    UPS is UPS.

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

    So far so good but the form factor is slightly different compare to other UPS. If you already have a UPS and your space is limited for existing one, this may not fit for the space. For me, it does the job. I don't run any serious tests on it.

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

      Thank you for sharing your review, Ryan! CyberPower

  • Rated 4 out of 5 stars

    HAS ALL THE RIGHT FEATURES

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

    REPLACEMENT FOR MY 15 YR OLD CYBER POWER UPS SYSTEM

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

    Rated 4 out of 5 stars

    Cyberpower UPS

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

    The unit was quite easy to install and included clearly written instructions. The number of backed up outlets meets my needs.

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

      Glad to hear that the unit meets your needs. Thank you for your review! CyberPower

  • Cons mentioned:
    Noise

    Rated 2 out of 5 stars

    Does not provide rated power

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

    Too many beeps, larger than it looks. Does not provide rated power cleanly

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

      The audible alarm in this unit can be muted. The capacity is 750VA / 375W and will provide up to 375 Watts when on battery mode. Please reach out to our support team at 877-297-6937 and we'd be happy to assist. Thank you for your review! CyberPower

  • Rated 3 out of 5 stars

    Just a little to small for 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.

    Bought this, but Geek Squad said that this one may give some protection, but not enough for desktops power requirements to do a good job. Returning this one and bought a bigger unit.

    I would recommend this to a friend
  • Best Buy Employee

    Rated 2 out of 5 stars

    No pass-through power delivery

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

    [Employee of bestbuy] Does not support pass-through power delivery when connected to mains electricity. My computer pulls less than 100w at idle but about 400-450 at load, and this UPS made a loud, constant beep when I was pulling over the rated 375w, making this device virtually useless for my purpose.

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

      Hello Matthew, looking at the specs of the UPS this UPS is rated for 375 watts anything over this will overload the UPS. Connecting devices over this load will give off a constant overload and a larger UPS is recommended. Please contact our support if you have any questions 1.877.297.6937 and dial 1 for tech support. Thanks for the review. CyberPower

  • Rated 3 out of 5 stars

    It's ok.

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

    Bought this unit for a new computer I built but the computer would set off the overvoltage. I ended up using this one on my old pc and switched my old ups to my new computer.

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

    Got a good price

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

    Would have given 5 stars, but unless you only plug a very small device, it doesn’t last very long.

    No, I would not recommend this to a friend
  • Rated 2 out of 5 stars

    Died after 3 months

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

    Bought this item on 10/4/22 and it died this morning. Nothing plugged in and it is screaming constantly unless I unplug it. Never had a power failure but I guess it could be the battery needs to be replaced although the troubleshooting info shows only it is overloaded! They don't make quality products any more. No longer available at Best Buy...

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

      Hello Rebecca, The SL750U comes with a 3 year warranty. If you are within the warranty period or would like assistance troubleshooting, please give our support team a call at 877-297-6937. We hope to hear from you! CyberPower

  • Rated 1 out of 5 stars

    I had to return it.

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

    I had to return it….the battery never charged so none of the components I plugged into the battery up side worked.

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

      Hello, it is important on this unit to let it charge 8-16 hours before use, otherwise the batteries inside of the unit will not be fully charged. CyberPower

  • Rated 3 out of 5 stars

    does the job

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

    Does what it's supposed to do, but when the power does go out it beeps far louder and more frequently than any of my others.

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

      Hello Pete, Glad to hear the unit is working for you. You are able to mute the beeping from the unit. If you require any assistance with the unit, please feel free to reach out to our support team at 877-297-6937. We'd love to hear from you CyberPower

  • Rated 3 out of 5 stars

    Good product

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

    I like the brand but I was unimpressed that this unit couldn't handle a desktop unit and 2 printers. It died on a power surge in like 3 minutes...

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

    Meh. Its ok for low power draw needs.

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

    This might be ok for one or two devices, like a modem and router or a tv. I had my main computer, two monitors, a modem and a router plugged in. Found the low power alarm goes off when the GPU on my computer reaches 95% usage. It's only an RX5700, not overclocked or anything. It has a 1000w power supply, and not anywhere close to pulling a full load and energy star monitors. Pretty disappointed.

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

      Hello Nick,
      Thank you for taking the time to write a review. In the future please give us a call to align the power specifications of the product with the devices being connected. You can reach us at 1.877.297.6937. Thank you!

  • Best Buy Employee

    Rated 1 out of 5 stars

    garbage

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

    [Employee of bestbuy] sure, this thing works fine as a surge protector when your power is still on, but when our power went out this went right along with it.

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

      Hello, I understand your UPS failed to provide any battery backup. This unit does come with a 3-year warranty and can be replaced if it is still under warranty. Please contact our technical support team at 1.877.297.6937 and dial 1 for tech support for assistance in this matter. You can also submit a web ticket by clicking this link https://www.cyberpowersystems.com/support/submit-a-support-ticket/. We look forward to hearing from you. CyberPower