Specifications :

Battery Model              616-0431
Compatible Model      For iPhone 3GS
Capacity                      4.51Whr
Charging Time            4-6 hours
Standby Time             72hours-120hours
Cell Type                     Double IC protection
Battery Life Cycle       ≥550times
Nominal Voltage         3.7V
Maximum Voltage      4.2V
Warranty                     1 Year