Sony Xperia GX is also called Sony LT29i or Hayabusa. In Japan its name is Sony SO-04D. It just debuts in Japan today. Its battery is 1700mAh.

Type: Li-Ion
Voltage: 3.7V
Caapcity: 1700mAh
Replace Code: BA900
Compatible with Sony Xperia GX, Sony LT29i, Sony Hayabusa, Sony SO-04D