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Customer Ratings & Reviews

Your price for this item is $54.99

Customer reviews

Rating 4.7 out of 5 stars with 932 reviews

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  • Quality

    Rating 4.1 out of 5 stars

  • Ease of Use

    Rating 4.1 out of 5 stars

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97%would recommend to a friend

Customers are saying

Customers consistently note the excellent battery life and reliability of the Back-UPS 450VA Network 40 UPS. Positive feedback also highlights its surge protection capabilities, ease of use, and reasonable price. While some users mentioned the unit's audible alarm and weight, the majority of reviews were overwhelmingly positive. The compact size and availability of outlets were also frequently praised.

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 5 Showing 81-100 of 932 reviews
  • Rated 5 out of 5 stars

    Perfect UPS for my needs

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

    The size and back up power that this unit has is great. Small footprint with convenient on/off switch and right amount of outlets make this unit the best buy for me.

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

    Rated 5 out of 5 stars

    works great so far

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

    We have had one instance of the power going off and back on very quickly. The modem and wifi router were uninterrupted. I bought it on sale for $27 at Best Buy.

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

    Rated 5 out of 5 stars

    works great

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

    These protect circuits very well. They actually detect when the power starts to drop and switch to battery backup to keep from damaging devices and loose data.

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

    Rated 5 out of 5 stars

    GREAT

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

    I use this in my home office. lights went out and was able to use a light and charge my phone before it ran out of charge. Plan to buy a sound one for my tv

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

    Rated 5 out of 5 stars

    Great product at a good price

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

    Works as expected and replaceable battery gives me hope it will last a long time. My last UPS had to be thrown out because the battery died after 5 years.

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

    Rated 5 out of 5 stars

    Saved my life

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

    We had a black out a few days after we bought this battery pack. It saved me a lot of heartache when it gave me the chance to back up a paper I was working on.

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

    Rated 4 out of 5 stars

    Very good entry level Battery Back Up System

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

    This is a great purchase for anyone looking to protect their investment at home. I live in FL...with all the storms we get annually, it's a must buy for computer owners. The options for network cables was a nice touch to an already great product!

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

    Rated 5 out of 5 stars

    2nd one I've had in several years

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

    There is a reason I bought a 2nd one of these. Others backups I've had on in multiple states and households have died over the years, but not this one.

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

    Rated 5 out of 5 stars

    Reliable, Affordable Battery Backup

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

    I using this battery backup to provide power to salt water aquarium in the case of power failure. Backup avoids costly lose of saltwater fish and corals

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

    Rated 5 out of 5 stars

    Great UPS battery

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

    This UPS battery is a definite must if you require surge and battery protection. Just don't plug a space heater into it or you will destroy the UPS.

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

    Rated 5 out of 5 stars

    Excellent

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

    This battery is very ood i tested cutting out the current and let my equipment run for about 5 minutes, plenty of time to safely turn of everything.

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

    Rated 5 out of 5 stars

    Good Basic Backup

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

    Entry level Backup Battery, Perfect for a Mac mini Server. Power goes out, and we keep running for 3 plus hours. Best for Tornado Alley Home & Businesses.

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

    Rated 5 out of 5 stars

    Easy to set up.

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

    Easy to set up. This is the second one of these I've purchased, the first one was purchased 10 years ago so I was sure I wouldn't have any problems.

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

    Rated 5 out of 5 stars

    Just works

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

    I always stick with APC for power protection. Their products are quite reliable. A unit like this is a must to protect your PC from power outages.

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

    Rated 5 out of 5 stars

    APC - Back-UPS 450VA Network 40 UPS - Black

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

    This unit works perfectly and allows me to plug many items in. Having battery back-up and surge protection makes me feel my products are safer.

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

    Rated 5 out of 5 stars

    Works like a charm

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

    We needed a small battery back-up for a SOHO to keep the modem & router from blowing during a power failure. This one does the job and more.

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

    Rated 5 out of 5 stars

    Good and cheap insurance from brownouts

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

    Great little inexpensive backup power supply. I recommend this to anyone with a computer or VoIP system to keep,up and running without failure.

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

    Works fine

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

    Not much to say about a UPS until you have had it a while and know how it lasts, but it is small, easy to install and has 4 power outlets, plenty for what I need to plug in.

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

    Rated 5 out of 5 stars

    good product - great price

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

    Worked right out of the box. Setup was easy and software easy to load. No problem communicating with the computer. Would buy the same unit again.

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

    Rated 5 out of 5 stars

    Great protection

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

    I have one of these on every electronic device in my home. I love the back up security if the power goes out as well as the surge protection.

    I would recommend this to a friend