We bought this to use on my boat, but ended up using it daily in my car. Its built tuff yet lightweight. Not too bulky, (I can still use my cup holders when its plugged into my car outlet.) It stays put once its plugged in too, no falling out or loose socket. It provides you with both an (indoor type) electrical plug-in plus a USB jack to power all of your devices. I also bought a "cigarette lighter" type expansion so I could have 3 lighter plug-ins plus this device. A lot of devices use the cigarette lighter now-a-days, so we needed a few more! It also has a built in fan, (to cool it during heavy use,) which is quiet and a power indicator so you'll know if the cigarette plug has power or not. The fan won't come on if you're just using it to charge a cell phone or something small and you won't even know its running if your radio is on even on when on low volume. We have used this device to power just about everything with no problems or battery drainage. Heres a list: Cell phones, labtops, tablet pcs, cameras, mini televisions, camcorders, battery chargers, mini vacuums, spot lights, cd/boomboxes, fans, video games, and even extension cords. We have a "trunk or treat every year at church and I plug the extension cord into it to plug in Christmas lights and a fogger! I use the extension cord plugged into it for camping too and the cord doesn't get hot or anything. *I did have it run down my car battery one time, (out of a thousand,) and that was because my battery had went bad a couple of months before and I hadn't replaced it like my technician had suggested. At the time the battery was barely starting my car, and I was foolish to forget to replace it before using it this way. Oh, and I had the extension cord plugged in with 2 appliances attached to that when it ran the battery down. Of course, a jump and battery replacement the next day fixed the problem! The bottom line is, this will power anything with an electrical plug in or USB, (within reason.) I don't know about plugging in a big appliance or anything, but its powered anything and everything we have needed for general travel, outings, boating and camping! If you use any of these items and need to travel with them, (and who doesn't these days,) you need one of these plugs! I honestly don't know how we ever got along without it! We have been using ours almost daily for over a year with no absolutely flaws what so ever!