18650 cell 2S2P 7.4v 4400mAH li ion battery pack

NO.

Item

Specifications

1

Nominal capacity          

4400mAh         0.2C Discharge

Minimum capacity      

4000mAh         0.2C Discharge

2

Nominal voltage            

7.4V

3

Charge current            

Standard Charge :0.2C

Rapid charge   :1.0C

4

Standard Charging method

0.2C CC(constant current)charge to 8.4V,then CV(constant voltage 8.4V)charge till charge current decline to ≤0.01C

5

Charging time              

Standard Charging

Approx 5 hours

Rapid charge

Approx 1 hour

6

Max.charge current    

Constant Current 1C Constant Voltage 8.4V 0.01C cut-off

7

Max.discharge current  

Constant current 1.0C end voltage 6V

8

Standard Discharge Current

Constant current 0.2 C end voltage 6V

9

Discharge cut-off voltage

6V

10

Charge cut-off Voltage    

8.4V

11

Initial Impedance          

≤45mW       

12

Weight                  

Approx:200g

13

Operating temperature    

Charging: 0℃~45℃

Discharging:-20℃~60℃

14

Storage temperature      

-5℃~35℃

     15

Storage Humidity        

≤75% RH

16

Appearance              

Without scratch,distortion,contamination and leakage

17

Standard environmental condition

Temperature         : 23±5℃

Humidity            : 45-75%RH

Atmospheric Pressure    : 86-106 Kpa