American Power Conversion (APC) 550VA Back-UPS with 8 Outlet Surge Protector and Battery Backup, 330W

American Power Conversion (APC)
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About American Power Conversion (APC) APC 550VA Back-UPS

The APC 550VA Back-UPS with 8 Outlet Surge Protector and Battery Backup provides power protection and battery backup for home computer systems. The power strip provides surge protection for all devices connected and battery backup for up to four. It yields an average output power capacity of 550VAC at 330W. Battery lasts up to 13.5 minutes at half-load capacity. These features make the Back-UPS ES an excellent choice to provide power and battery backup for your home PC.

American Power Conversion (APC) APC 550VA Back-UPS Features

  • Battery Failure Notification: Provides early-warning fault analysis on batteries enabling timely preventive maintenance
  • Data Line Protection: The surge protector features an RJ-11 surge protection connection that allows you to protect phone-line connection from power surges. This helps to preserve the life of your modem and further protect your computer from surges
  • Cold-Start Capable: Provides temporary battery power when the utility power is out
  • Hot-Swappable Batteries: Ensures clean, uninterrupted power to protected equipment while batteries are being replaced
  • Disconnected Battery Notification: Warns when a battery is not available to provide backup power
  • Automatic Self-Test: Periodic battery self-test ensures early detection of a battery that needs to be replaced
  • Audible Alarms: Provides notification of changing utility power and UPS conditions
  • User-Replaceable Batteries: Increases availability by allowing a trained user to perform upgrades and replacements of the batteries reducing Mean Time to Repair (MTTR)
  • Transformer-Block Spaced Outlets: Protect equipment with input transformer blocks without blocking access to other receptacles
  • Intelligent Battery Management: Maximizes battery performance, life and reliability through intelligent, precision charging
  • Safety-Agency Approved: Ensures the product has been tested and approved to work safely with the connected service provider equipment and within the specified environment
  • Battery Replacement Without Tools: Allows quick, easy battery replacement

American Power Conversion (APC) APC 550VA Back-UPS Specifications

Output Power Capacity
330 Watts/ 550 VA
Max Configurable Power
330 Watts/ 550 VA
Nominal Output Voltage
Output Frequency (sync to mains)
47 - 63 Hz
Waveform Type
Stepped approximation to a sinewave
Output Connections
4 x NEMA 5-15R (Battery Backup)
4 x NEMA 5-15R (Surge Protection)
Nominal Input Voltage
Input Frequency
50/60 Hz +/- 3 Hz (auto sensing)
Input Connections
NEMA 5-15P
Cord Length
1.52m / 4.98ft
Input voltage range for main operations
88 - 139V
Battery Type
Maintenance-free sealed Lead-Acid battery with suspended electrolyte: leakproof
Typical recharge time
24 hours
Replacement Battery
RBC Quantity
Interface Port(s)
Control panel
LED status display with On Line: On Battery: Replace Battery and Building Wiring Fault
Audible Alarm
Alarm when on battery: distinctive low battery alarm: overload continuous tone alarm
Surge energy rating
340 Joules
Full time multi-pole noise filtering: 5% IEEE surge let-through: zero clamping response time: meets UL 1449
Data Line Protection
RJ45 10/100 Base-T Ethernet protection
Operating Environment
0 - 40 deg.C
Operating Relative Humidity
5 - 95%
Operating Elevation
0-3000 meters
Storage Temperature
-15 - 45 deg.C
Storage Relative Humidity
5 - 95%
Storage Elevation
0-15000 meters
Audible noise at 1m from surface of unit
45.00 dBA
Online Thermal Dissipation
16.00 BTU/hr
Regulatory Approvals
ENERGY STAR (USA),FCC Part 15 Class B,FCC Part 68,NOM,TUV-C,UL 1778,UL 497A,UL 497B
Environmental Compliance
RoHS, REACH: Contains No SVHCs
Dimensions (WxHxD)
180x88x302mm / 7.08x3.46x11.88"
5.50kg / 12.12lbs

American Power Conversion (APC) APC 550VA Back-UPS Reviews

Review Snapshot®


(based on 134 reviews)


of respondents would recommend this to a friend.

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Most Liked Positive Review


Please add mounting holes

Great device. Please add mounting holes on the back so the UPS can be hung on the wall. The previous model had these mounting holes. We miss them.


Most Liked Negative Review



This product broke when I picked it up. It looked used and parts were missing. I don't like this.

Reviewed by 134 customers


This is a replacement for ...


from Amagansett, NY

This is a replacement for an earlier produsct. Very satisfied with both.


Love Doing Business with APC


from Brookfield, WI

As soon as we identified what products we like to use, APC's website gives us great flexibility with ordering. Every transaction is quick and completed with great quality.


Great Purchase


from Ohio

The price was good and directions were clear on setting it up.


Pretty good


from Undisclosed

Just used down in the basement to keep the router, switch, and DirecTV power inserter connected during outages. It seems to be doing that okay.


at least the sixth one I've purchased


from Undisclosed

Love this battery back up. Almost every computer in our office has this model, plus I use it at home too. Great to have a chance to turn everything off properly when there is a power surge/wane/outage before losing vital information. Can't beat the warranty either. I really like APC's green return policy too!




from Montreal

At only 17 months old this UPS worked very well until recently, when it could only give 15-20 seconds of backup during a recent power outage. Normally it gives about 10 minutes, enough time to shut down the computer properly. It seems the battery is no more good and it or the entire unit needs replacing. A previous APC UPS I owned worked for about 3-4 years before quitting. At this time I cannot recommend this model to anyone based on my experience. Maybe APC will step up and replace it.


Excellent product and service


from Everett, WA

My previous unit was 5 or 6 years old when the battery failed. I researched replacing the battery, but I wanted an APC replacement, not some after market product. Upon contacting APC, I was advised of their replacement program. I purchased an entirely new unit for a VERY reasonable cost, and they shipped it, plus provided a free shipping label for me to return the outdated model to them. Excellent program and great customer service! The phone representative who assisted me was also extremely helpful, and very friendly.

(0 of 1 customers found this review helpful)


Works great


from Wellington, Fl

I use this battery for my 82" TV. We have lots of power interruptions in Florida and this battery keeps the TV running.


Works as promised


from Houston, Texas

This is not a glamorous product - it just sits there under my desk doing its job. But it does its job. I live in an area with lots of lightning storms, sometimes with short power outages, and that is what this product is for. I have not had damage to any equipment that was plugged into this product, and in terms of battery backup, I often realize that there was a very short power outage due to the beep from the UPS rather than from lights blinking or the like - in other words, it response very quickly. Of course it is a "550" with limits on its UPS capabilities, but I got what I paid for and more. It is what I needed. I am very pleased.


Dependable and Affordable


from Florida

I've been using APC products for many years. Since I traded in the prior unit for the current model, there haven't been any blackouts or monster power surges but I expect it will eventually save my bacon as its predecessors have.


Questions & Answers Powered by TurnTo®

Questions about this item:

HeinzHW W  Does this model have protection for an incoming internet connection cable?
Andrew R  From the tech specs: Data Line Protection - RJ45 10/100 Base-T Ethernet protection
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