After the rear panel is gone, the battery can be easily removed from its home.

The Streak's 3.7 V 1530 mAh (5.66 Whr) battery reportedly powers the gargantuan device for...well...we don't know how long.

The fact that Dell didn't publish the battery life hints at the fact that it isn't too great. What do you expect from a 5" display?

The inner face of the battery is covered with a sheet of steel, rather than plastic, to decrease its overall thickness. Perhaps the Streak also doubles as body armor?