I wanted an extra battery for my Axim X30, as I use it primarily as an eBook Reader. I hated having to stop to read a book because I ran the battery is ist.Ich let this special battery, because I could to the Amazon Prime 2 days shipping. I had read reviews on other “Max Power” replacement batteries for knowing Dell Axim X30, and that it would stick out on the back) (do not flush. This was not a problem for me when I did not use a soft case (which I made myself) I’ve also read that it was a bit complicated to install. When I know that there was no problem. I must say that it is attached very safe! I use now, as my primary battery and the original and my back. This new battery lasts so long, but I do not think I need the back up! Rating: 5 / 5