When installed in an Aspire One 722 netbook must be noted that you meet the two guide rails in the battery compartment and then just pushes all, lest the battery at an angle. At the end a little force is necessary ... If the battery has been inserted, then it fits perfectly.
Unfortunately, the battery is so far out of the netbook, the keyboard is greatly inclined. I was the really bother typing that I stuck under the front 4 mm foam glider to make the keyboard flat again. In addition, the battery is missing the two rubber studs of Orginals, so that the computer on a table top lighter back and herrutscht. As a way out, a strip Tesa fabric tape can be stuck on the battery. But then the notebook will work again as before - the extended battery also serves as a handle for carrying the device.
These batteries also differ from the weight of the original. The netbook is the new battery considerably heavier.
The biggest advantage of the battery is certainly the much lower rate than that for the outrageously expensive original.