Last Chance 48-Hour Flash SaleEnds Dec. 24. Limited quantities.Shop now

Skip to content
Gift Ideas
Main Content

Customer Ratings & Reviews

No content
  • Front. CyberPower - 850VA Battery Back-Up System - Black.
  • Alt View 1. CyberPower - 850VA Battery Back-Up System - Black.
  • Alt View 11. CyberPower - 850VA Battery Back-Up System - Black.

CyberPower - 850VA Battery Back-Up System - Black

Model:
LE850G
SKU:
3938799
Highly rated by customers for:
Your price for this item is $62.99
Clearance
The comparable value price is $89.99

Customer reviews

Rating 4.7 out of 5 stars with 1023 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 4.7 out of 5 stars

Pros mentioned filter

Cons mentioned filter

97%would recommend to a friend

Customers are saying

Customers express satisfaction with the 850VA Battery Back-Up System's long battery life, reliable performance, and effective surge protection. Many appreciate its reasonable price, ample outlets, and ease of use, finding it straightforward to set up and operate. The unit's size is also frequently praised as manageable. A minor drawback mentioned by some customers is the system's weight.

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 44 Showing 861-880 of 1,023 reviews

  • Backup for non-critical items

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

    It's fine, but has the same major flaw as all other battery backups. The inlets are too close to each other. So look at what you plan to plugin in advance because so you don't come up short.

    I would recommend this to a friend

  • Great product! Works as expected.

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

    Great product! Works as expected. Great product! Works as expected.

    I would recommend this to a friend

  • Great to protect expensive purchases

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

    Just plugged in computer, printer, and phone. No more resets because of power fluctuations.

    I would recommend this to a friend

  • Good for my pc

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

    I'm not impressed but I would say the overall performance of the battery is good.

    I would recommend this to a friend

  • Has be working great

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

    Have had two short power failures since it was installed and the UPS worked as described.

    I would recommend this to a friend

  • Good backup source

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

    I have had these in the past and they continue to do the job intended.

    I would recommend this to a friend

  • Good size, plenty of plugs

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

    Plug spacing good for box power cords. Weight helps it stay put when cords are pulled.

    I would recommend this to a friend

  • Great ear piece

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

    The earpiece with Bluetooth connection worked great, connected readily, felt comfortable.

    I would recommend this to a friend

  • It works

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

    I'm happy with it. It is a battery back up. Not much you can say except it works.

    I would recommend this to a friend

  • Nice Battery Backup

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

    Very good product. I mainly use CyberPower as my choice for Battery Backup products.

    I would recommend this to a friend

  • excellent product

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

    Good backup protection for computer equipment during a power surge, lightening strikes.

    I would recommend this to a friend

  • Great Buy!

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

    Had a power outage several times in a day and it did it's job. Completely satified.

    I would recommend this to a friend

  • Great backup power system.

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

    This is an excellent backup power system. Easy to setup and not that expensive.

    I would recommend this to a friend

  • Works

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

    So far so good, no problems with this item at all. I do like the law out of the plugs.

    I would recommend this to a friend

  • Great for the home

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

    Nice and easy battery with a decent UI for monitoring your output. Great for the home!

    I would recommend this to a friend

  • Great APS

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

    This unit is great enough plugs for all my needs. Has 6 hrs of backup time.

    I would recommend this to a friend

  • Good protection for your A/V system or computer

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

    I bought this unit to provide protection for my A/V system. It provides surge protection as well as buffering out of range voltages. It is well worth its cost for my peace of mind.

    I would recommend this to a friend

  • must have for power outages

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

    We have a lot of power outages and wanted something to keep my equipment running.

    I would recommend this to a friend

  • It got through some power glitches OK

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

    This backs up my video recorder. It worked perfectly during some power glitches!

    I would recommend this to a friend

  • Great Value

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

    They work well and are simple to install even with the software portion.

    I would recommend this to a friend
Page 44, Showing 861-880 of 1,023 reviews
Sign in or Create Account

Get the latest deals and more.

Best Buy appLearn more
Share on YouTubeShare on InstagramShare on TikTokShare on FacebookShare on PinterestShare on X
Best Buy Canada
AccessibilityTerms & ConditionsPrivacyInterest-Based AdsState Privacy RightsHealth Data PrivacyDo Not Sell/Share My Personal InformationLimit Use of My Sensitive Personal InformationTargeted Advertising Opt OutCA Supply Chain Transparency Act
In-store pricing may vary. Prices and offers are subject to change. © 2025 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.