1. Description

Nominal Parameter   

Note

2. Nominal Capacity

40mAh

3. Nominal Voltage

3.70V

4. Internal Resistance

≤50mΩ

5. Discharge Cut-off Voltage

3.0V

6. Charge Voltage

4.20V

7. Max Charge Voltage

4.25V

8. Charging Time

Around 5 hours

Charge the battery at constant current of 0.2C to reach 

4.2V. 

9. Standard Charging Current

8mA

0.2CmA

10. Max Charging Current

20mA

0.5CmA

11. Max Discharging Current

40mA

1.0CmA

12. Weight

Around 8g

13.Operating 

     Temperature

Charge

0~+45℃

Discharge

-10~+60℃

14. Storage

Less than 1 month

-10~+45℃

Recommend 20℃ when delivery

More than 6 months

-10~+35℃

15. Energy

0.148Wh

16.  Dimension

Battery cell

dimension:3.0*11*20mm

Dimension with PCB:

3.0*11.5*22.5mm