UFX 403442 700mAh 3.7V lithium-ion polymer battery
 
Electrical Specification
Capacity: 700mAh
Nominal Voltage: 3.7V
Energy: 2.59Wh
Internal Impedance: less than 180mΩ
Max. Charge Voltage: 4.2V
Discharge Cut Off: 2.75V
Max. Charge Current: 700mA
Max. Discharge Current: 700mA
Standard Charge Current: 350mA
Standard Discharge Current: 350mA
Charge Temp. Range: 0°C to 45°C
Discharge Temp. Range :  -20°C to 60°C
Cycle life: 100 cycles ≥92%
                     300 cycles ≥88%
                     500 cycles ≥80%
 
Cell protection
Overcharge Detection : 4.28 ±25mV (1 to 1.6sec delay, release 4.2V ±50mV)
Overdischarge Detection：2.5V ±50mV (115 to 175msec. delay, release 3.0V ±50mV)
Overcurrent Detection：2.5A to 4.0A (9 to 15msec. delay)
Short protection：Yes