502040 350mAh Li polymer battery

No.

Item

Spec

Remark

1

Charge Voltage

4.20±0.02V

2

Nominal Voltage

3.7V

Cell voltage between3.75V ~3.95V before shipping

3

Nominal Capacity

350mAh@ 0.2C Discharge

Nominal capacity refers to the capacity of 0.2C discharge with 3.0V cut-off voltage.

4

Cycle Life

≥500 Times

One cycle refer to one charge period and then one discharge period.

Test condition:

Charge: 0.2C to 4.2V

Discharge: 0.2C to 3.0V

The cycle life is the cycle times when the discharge capacity is about 60% 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:200mΩ

After standard charging, measure the internal resistance with AC1KHz

7

Standard Charge

0.2C

0.2C CC（constant current）charge to Max Charge voltage 4.2V,then CV(constant voltage 4.2V)charge current decline to ≤0.01C.

8

Max Continuous Charge

0.5C₅A

9

Standard Discharge

0.2C

0.2C CC（constant current）discharge to Min Discharge cut-off

10

Max Continuous Discharge

1050mA

11

Fast Charge

1.0C₅A

Constant Current 1.0C₅A,Constant Voltage 4.20V,

0.01 C₅A cut-off

12

Fast Discharge

1.0C₅A

Constant current 1.0C₅A, end voltage 2.8V

13

Discharge Cut-off Voltage

3.0V

14

Operating Temperature

Charge: 0 ℃~ +45℃

Discharge: -20℃~ +60℃

15

Storage Temperature

Less than 1 year: -5~25℃

Cells must be storied at 3.75V~3.95V. 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 3.75~3.95V.

Less than 3 months: -10~40℃

16

Weight

Appr: 9.5g

17

Pack Dimension

T: 5.0mm Max

W: 20.0mm Max

L: 40.0 mm Max

Measured with weighting 300gf at 25℃± 0.5℃ Not including Tabs

18

PCM

16×4.0×0.6mm