Summary: Works as advertised. I agree with other reviews the battery has a short life. I have a desktop, monitor, and printer plugged in and the battery lasted less than 15 minutes. However, during short brownouts, it works great.
Summary: This unit replaced the power strip that was used to power the tv, dvr and surrround sound. It installs just as the power strip was, although it is quite a bit larger and heavier. After allowing it to charge overnight, I tested it by unplugging it from the wall to create a "power failure". With everything powered on, it worked flawlessly and gave a series of loud beeps to let you know that there was a power failure.
Summary: I've had a similar model for around 5 years, the ES550. I live in an area that has frequent and sudden power outages that last anywhere from a split second to hours long. Many times we have had multiple outages over the course of just a minute or so, and that will toast virtually any electronics. But the APC has always done its job, and the software, if configured correctly, works very well to make sure items such as a PC are shut down properly if you're not home.
Summary: 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new unit for a VERY reasonable cost, and they shipped it, plus provided a free shipping label for me to return the outdated model to them.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!