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Specifications

lithium polymer battery cell
Bluetooth/mp3/portable PDA battery
thin and light weight li po battery
3.7V 300mAh

Lithium polymer battery:

1.Charge Voltage Max. 4.2V
2.Nominal Voltage 3.7V Cell voltage between3.6V ~3.9V before shipping
3.Nominal Capacity Discharge Nominal capacity refers to the capacity of 1C discharge with 2.75V cut-off voltage, after charging with standard method.
4.Cycle Life ≥300 Times One cycle refer to one charge period and then one discharge period.
Test condition:
Charge: 1C to 4.2V
Discharge: 1C to 2.75V
The cycle life is the cycle times when the discharge capacity is about 80% of the rated capacity.
5.Self-discharge Residual Capacity>90% After standard charging, storied at 25°C±0.5°C for 30 days, then measure the capacity as item 4.
6.Impedance Max: 60mΩ After standard charging, measure the internal resistance with AC1KHz
7.Charge Current Max. 1.0C
8.Discharge Current Max. 1.5C
9.Discharge Cut-off Voltage 2.75V
10.Operating Temperature Charge: 0 °C~ +45°C
Discharge: -10°C~ +60°C Cells must be storied at 3.6V-3.9V.

During long period storage, cells should be maintained every 90 days.

The method is to do a charge-discharge cycle with standard method, then charge to 3.7-3.9V.