For just about everything major that needs power, like appliances, TVs, or computers, you're usually going to need to plug those things in. When it comes to computers, you may not need to keep laptops plugged in but you will need to charge them using an ac power source from time to time, and if you use a desktop then you're going to need to keep it plugged in all of the time. The downside about this is that you could end being left in a pinch if the power in your home goes out. With something like the APC Power Saving Back-Ups this isn't an issue as this is essentially a backup generator for your computer and the other components that you would have hooked up to it.
With a desktop you're not just plugging in your desktop, you're also plugging in your monitor, and potentially plugging in audio components like speakers and subwoofers. The APC Power Saving Back-Ups is meant to provide power to all these components without having to worry about the power being interrupted in the event of a power outage, which should leave you feeling safe about keeping things plugged in all of the time as even with the power going out you'd still be able to continue using the PC.
The APC Power Saving Back-Ups is capable of doing these things because it houses an internal battery, which you will eventually need to replace but it was designed to be hot swappable so it's a simple replacement to carry out. If you're worried about what the battery life will be throughout the life of use, the front side of the unit has an LCD status display which showcases a battery life indicator of the battery inside so you will always know how much battery life is left before needing to put in a new one. On the backside of the unit, there are ten open AC outlets to plug in just about any computer and computer component you could ever want. Normally the APC Power Saving Back-Ups retails for $179.99, but it's currently on sale for just $115 which saves you about $65.