Factory Supply Rechargeable Cylindrical 18650 Batteries for Medical Equipment UFX 18650-2S2P 4400mAh 7.4V Li-Ion Battery

No.

Item

General Parameter

Remark

1

Rated Capacity

Typical

4450mAh

Standard discharge(0.2C C₅A) after Standard charge

Minimum

4400mAh

2

Nominal Voltage

7.4V

Mean Operation Voltage

3

Voltage at end of

6.0V

Discharge Cut-off Voltage

Discharge

4

Charging Voltage

8.4±0.03V

5

Internal Impedance

≤115mΩ

Internal resistance measured at AC 1KH_Z after 50% charge

The measure must uses the new batteries that within one week after shipment and cycles no more than 5 times

6

Standard charge

Constant Current 0.2C₅A

Charge time : Approx 6h

Constant Voltage 8.4V

0.01 C₅A cut-off

7

Standard discharge

Constant current 0.2 C₅A

end voltage 6.0V

8

Fast charge

Constant Current 0.5C₅A

Charge time : Approx 2.5h

Constant Voltage 8.4V

0.01 C₅A cut-off

9

Fast discharge

Constant current 0.5C₅A

end voltage 6.0V

10

Maximum Continuous Charge Current

1 C₅A

11

Maximum Continuous Discharge Current

1C₅A

12

Operation Temperature Range

Charge: 0~45℃

60±25%R.H.

Bare Cell

Discharge: -20~60℃

13

Storage Temperature Range

Less than 1 year: -20~25℃

60±25%R.H.

less than 3 months: -20~40℃

at the shipment state

14

Pack  Dimension

High: max67mm

Width: max36mm
Thickness: max36mm

Initial  Dimension