Droid X extended battery of 1800 mAh by Motorola adds about a third to the working time. It is one of the very few batteries of that kind that virtually does not add any bulk. This Droid X extended battery is shipped with a back cover that accommodates the battery somewhat better even though many users have found that they can even use the standard cover.
Fortunately, Droid X extended battery adds so little to the dimensions of the handset that all the earlier purchased accessories can still be used. This being true, there are much less adjacent challenges for the Droid X owners than it is many times with switching to a more powerful battery. The desktop charging cradle, the car dock and even the old case will fit decently.