![]() (Many also include software for the PC that can automatically shut it down safely, if you aren't nearby at the time.) It might be possible to use the battery power of a UPS to run a laptop or cell phone for a much longer period of time, but don't expect it to be your sole source of electricity through an extended power outage or natural disaster. It's a failsafe designed to give you enough time to quickly save your work or finish some crucial task, then power down safely and wait for the primary source of electricity to come back. Even with a large capacity battery, a consumer-grade UPS can only run a desktop PC and a monitor for twenty minutes to an hour (depending on the model you buy). That being said, a UPS is a different kind of emergency backup system than, say, a gasoline-powered generator that can run your entire home. In the specific case of desktop computers, this is crucial: it keeps the PC powered up and prevents any unsaved work from being lost. Crucially, a UPS is also designed to instantly switch to its internal power supply (or simply feed electricity primarily from that supply instead of the wall power outlet) to make sure that devices plugged in never lose power, even for a second. Just like the portable battery charger you might already have for your phone, a UPS includes a large backup battery that can keep your computer (or anything else) running when the power goes down. To achieve this, a UPS is basically a giant battery. Since the more expensive models in this case aren't actually all that expensive, getting maximum protection for your stuff doesn't require a huge investment. APC Battery Back Up Surge Protector, 500VA Backup Battery Power Supply, BK500BLK Back-UPS. Brief content visible, double tap to read full content. Generally joule ratings range from under 1000 joules for the cheaper models to over 3000 for more elaborate versions. Amazons Choice in Computer Uninterruptible Power Supply Units by Amazon Basics. Fuse box diagram (fuse layout), location and assignment of fuses and relays Chevrolet Malibu (2013, 2014, 2015). ![]() ![]() Power surges can be light-like your home's internal grid re-adjusting when someone plugs in a hair dryer or a vacuum cleaner-or heavy, like when your satellite dish takes a direct lightning strike. Surge protectors offer an amount of electrical joules for which they are rated to stop, and the higher the better. But in terms of pure protection, what you're looking for is the joule rating. All that stuff is nice, and could certainly come in handy if you're planning an elaborate desk or television setup. Surge protectors range from simple to complex, with pricier versions packing in ten or more electrical outlets, plus extra in and out lines for other types of electronic equipment like phone lines, Ethernet cords, USB power, and coaxial cables.
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