Replacement Compatible Digital Camera Battery
SONY:

Type Li-ion
Voltage 3.6 V
Capacity 2600mAh
Weight 80 g
LxWxH 80.80x51.90x43.70 mm

DSC-P3
DSC-P5
(Not Applicable DSC-V1/P2/P7/P8/P9/P10/F77)

This battery is four times the capacity of the original.
Part fits into the camera and part forms a hand-grip for the camera.