With the PC market dwindling and Microsoft itself now providing some of the best Windows 10 models (like the powerful Surface Book convertible), third-party OEMs have to do something to stand out. That's perhaps why Acer has decided to put an internal battery in its 17.3-inch Aspire Z3-700 all-in-one (AIO) to make it more roadworthy. It's not the first AIO to do this trick -- Dell's hybrid XPS 18 did it a couple years ago, and Lenovo's 27-inch Horizon 2 takes the idea to the extreme. The Z3-700 is one of the lightest and longest lasting we've seen at 2-kilograms (4.4 pounds), though. That suggests it's more a big tablet than an AIO, but Acer says the dual kickstand and 1080p, 10-point multi-touch screen also make it a worthy desktop PC.