Been awhile since I have been on, and my wife now owns my old Samaung Galaxy Nexus. She also has a Nexus 10" Tablet and wants to tether the tablet to the phone so the tablet can be mobile. Her concern is that the original battery that she still uses wont hold up very long. When I search I seem to get info overload. Was hoping someone here could point me to (If there is such a thing) the consensus best extended battery? Is there an extended battery that is the best?