Keep an extra battery for your Samsung Galaxy S2 GT-I9100 cell phone handy at home, in the office or on your travel.
Compatible with: Samsung Galaxy S2 GT-i9100
Cell type: Li-Ion
Voltage: 3.7V
Capacity: 2000mAh
Dimensions: 60x45x7mm
Weight: 33g
It will fit well for your original back cover
Seems like a pretty good deal, great time to stock up for my phone!