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CyberPower

CyberPower CP550SLG Standby UPS System, 550VA/330W, 8 Outlets, Compact

  • Based on 11,121 reviews
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Arrives Monday, Jun 30
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Style: UPS


Size: 550VA


Features

  • 550VA/330W Standby Battery Backup Uninterruptible Power Supply (UPS) System uses simulated sine wave output to safeguard workstations, networking devices, and home entertainment equipment
  • EIGHT NEMA 5-15R OUTLETS: Four battery backup & surge protected outlets; Four surge protected outlets; INPUT: NEMA 5-15P right angle, 45 degree offset plug with five foot power cord
  • LED INDICATORS: LED status lights indicate Power-On and Wiring Fault
  • USB CONNECTIVITY: HID compliant USB port enables full integration with built-in power management and auto-shutdown features of Windows, Linux and Mac OS X
  • 3-YEAR WARRANTY INCLUDING THE BATTERY; $100,000 Connected Equipment Guarantee and FREE PowerPanel Personal Edition Management Software (Download)

Description

The CyberPower Standby CP550SLG UPS safeguards a home office PC and other electronics (monitors, scanners, speakers, CD/DVD/MP3 players and more) from surges, sags, brownouts and other power disruptions. The CP550SLG provides surge protected, battery backup and features 550VA/330 Watt capacity, GreenPower UPS technology, 8-NEMA 5-15P receptacles, (4 wide-spaced), Compact design, 1- USB port, phone/fax (RJ11) line protection, EMI/RFI filters, PowerPanel UPS management software , GreenPower UPS - Advanced energy-saving circuitry that reduces UPS energy costs by 75 percent, USB Connectivity - HID compliant USB port enables full integration with built-in power management and auto shutdown features of Windows, Linux and Mac OS X, EMI/RFI Filters - Shielding against electromagnetic interference and radio frequency signals prevents line noise (humming) over telephone lines or audio systems, Transformer-Spaced Outlets and8211, Widely-spaced outlets accommodate large transformer-based plugs, Mounting and 8211, mounting options: horizontal, vertical, cabinet, and wall , LED Indicators/Audible Alarms - LED status lights indicate Power-On and wiring faults / Distinctive tones identify when the unit is running on battery power, is overloaded or when the battery is low.

Specs & Other Info

SpecificationDetails
BrandCyberPower
Battery CompositionSealed Lead Acid
Dimensions3.3"D x 9.8"W x 5.8"H
Operating Voltage120 Volts
ColorBlack
Weight6.4 lbs
Model NumberCP550SLG
Required Batteries1 12V battery
AvailabilityNot Discontinued
Release DateApril 2, 2004
ManufacturerCyberPower Systems
LanguageEnglish
Origin CountryVietnam

Frequently asked questions

The backup time depends on the total load connected to the UPS. For a load of 165W (50% of its capacity), the CyberPower CP550SLG typically provides 8-10 minutes of backup time, enough to safely shut down equipment.

Yes, the CyberPower CP550SLG can support a desktop computer during a power outage. With a capacity of 550VA/330W, it is designed to provide emergency power to devices such as desktop computers, allowing for safe shutdowns and preventing data loss.

The CyberPower CP550SLG has a battery indicator that signals when the battery is low or needs replacement. Regular self-tests also help in determining battery health. Expect to replace the battery approximately every 3-5 years, depending on usage and environmental factors.

Yes, the CyberPower CP550SLG offers surge protection and noise filtering. Its 8 outlets are designed to protect connected equipment from harmful electrical transients, while also providing reliable power backup during outages.

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Top Amazon Reviews

🚀 Abunda's Overview

This is our summary and key points to consider based on customer reviews.

The reviewed UPS system is praised for its reliability during power outages, maintaining power for essential devices like satellite systems, breathing machines, and home networks. Users appreciate the UPS for its reasonable price, small footprint, and efficient battery backup, providing peace of mind and protection for connected devices. It offers both surge protection and battery backup, though it's noted that not all outlets include battery backup.

Pros

  • 🔋 Reliable battery backup during power outages
  • 💸 Offers good value for the price
  • 🔌 Includes surge protection and battery backup outlets
  • 🔄 Maintains power without interruption, vital for essential equipment
  • 🚀 Compact size suitable for small spaces

Cons

  • ⏲ Battery life may be limited to around 3 years
  • 🔋 Only half of the outlets have battery backup
  • 👃 Some units may emit an odd smell initially

Should I Buy It?

Yes, if you're in need of an affordable, reliable UPS system for essential home or office electronics, particularly for short-term power outages. While it has a few limitations, such as only having battery backup for half of the outlets, its performance and compact size make it a worthwhile choice for basic needs.

    • Should have bought one sooner! Great to still have internet in temporary power outages.
Style: Standby Size: 625VA
I have this connected to my fiber optic modem and internet router. I tested it and had both of them running for over an hour and didn't even get to the point where it was running low on power. You also can turn off the beeping if you use the cable that comes in the package so at least you can use your phone to surf the internet. I even bought one for an LED TV so I can watch TV as modern TVs don't just that much power. I should have bought one sooner. Just be aware that some outlets on the unit are only 'surge protected' and some allow for them to be powered. This is nice so you can exclude other devices from using power in an outage that don't need them. All outlets on it though do power from surges which is great. ... show more
Reviewed in the United States on June 20, 2025 by Amaz0n Customer25
    • Real life test was successful. I’ll be getting a couple more!
Style: Standby Size: 425VA
The electricity went out very briefly a moment ago. It’s the first chance I’ve had to see if it does work. And it absolutely does. I have a Mac Mini M4, 6 external desktop drives, and a monitor on the UPS side of the device. When the electricity failed, the unit gave a single beep, alerting me and giving me time to turn on the monitor and begin shutting down. Luckily it all came back on before that was necessary. But it would absolutely would have allowed for that much time. It’s affordable and well made by a solid company! I’m going to get a couple more for another cluster of computers. ... show more
Reviewed in the United States on June 17, 2025 by J Schraffenberger
    • Worth the price
Style: Standby Size: 625VA
Power loss and surges, I use on the desktop computer and living room TV. The price is reasonable and there is no setup. Just plug into an electrical outlet and then plug the computer, TV, etc. into the four-battery supported and surge protected outlets. The other four outlets are only surge protected. Standard charge time is eight hours for the battery to be fully operational. Can watch TV or use the computer until the battery is drained if you choose to do so. Works well and have been using for many, many years. ... show more
Reviewed in the United States on June 4, 2025 by LTB
    • Low power rating
Style: Standby Size: 700VA
Excellent product, keeps my electronics running through power surges and outages! I've noticed though that it does not like when I run two consoles at once, guessing it can't handle the power load. I was playing on my Xbox one and had to boot up my PS5 real quick, and the UPS started making these long beeps, different than the noise it makes when it loses power. I lost my guide though so I'm assuming it's letting me know I'm using more power than it can handle? It stopped after I shut my PS5 off. ... show more
Reviewed in the United States on April 30, 2025 by Brienne E
    • Reliable Backup Power! Great Value in the CyberPower ST425
Style: Standby Size: 425VA
I recently purchased the CyberPower ST425 Standby UPS System, and it's exactly what I needed for protecting my electronics. This compact unit offers 425VA/260W of backup power, which is perfect for keeping my essential devices running during short power outages or preventing data loss from unexpected surges. With 8 outlets, I have plenty of space to plug in my computer, monitor, modem, and other peripherals. The compact size is a major plus – it fits neatly under my desk without taking up much space. The black finish is also sleek and blends in well. Setup was incredibly easy; I just plugged it in and connected my devices. It provides peace of mind knowing that my equipment is protected from power fluctuations and that I'll have a few minutes of backup power to save my work and shut down properly during an outage. For anyone looking for an affordable, reliable, and compact UPS to protect their valuable electronics, the CyberPower ST425 is an excellent choice. It's a great value for the features it provides. ... show more
Reviewed in the United States on April 25, 2025 by Seth Green
    • Reliable support at an affordable cost.
Style: Standby Size: 425VA
Solid backup at a reasonable price. It is essential to prepare for summer storms, as power outages can be particularly hard on your electronic equipment. I have my modem and laptop connected, and when the power goes out, all my equipment remains on and protected.
Reviewed in the United States on June 12, 2025 by D.L.R.M.
    • Peace of mind for a modest price.
Style: Standby Size: 625VA
I bought this UPS unit to supply electricity to my powered recliner in the event of a power failure. I experienced such a power failure a couple of years while i was sitting in the chair in a partially reclined position. Since the footrest was automatically extended, I had no easy way to get out of the chair by myself (my wife helped pull me out). I should have bought this UPS then, but I put it off. A few weeks ago, I was forced to take action. I was sleeping in the recliner for a couple weeks due to back injury when we got a warning about an ice storm headed our way the next day. I wasted no time in placing the order for this unit and Amazon responded by getting it to me the next day. After fully charging the battery, I tested it by unplugging the UPS from the wall and running the recliner up and down while no one was in it. That worked fine, so I got in and did full recline followed by full upright, which also went off without a hitch. There is a tone that sounds every few seconds when the power goes out, which switches to several times per second when the battery is nearly depleted. This is the only way to know if it is time to stop using the UPS to power the recliner until the battery has been recharged. The UPS appears to have ample power to take care of the recliner for many days. Its relatively small footprint and discrete height helps it to remain fairly inconspicuous in our family room. It met my needs in full and I only wish I had bought it sooner. ... show more
Reviewed in the United States on February 23, 2025 by humath
    • Fits perfectly.
Style: Standby Size: 700VA
Review Image by William Cooper William Cooper
The unit wouldn’t come on when plugged in. Found the reset button hiding in the back and now powered on waiting for a power outage. The slim design is perfect for my space. Bought this for my internet modem which is in wall box. We experience short outages which cuts out the internet. The unit fits perfectly and should stop the interruptions. ... show more
Reviewed in the United States on May 30, 2025 by William Cooper William Cooper

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