INR18650-2000mAh battery,2200mAh Li-ion battery manufacturer,lithium ion battery for vacuum cleaner,High security lithium ion battery

2000mAh Li-ion cylindrical battery Product Details:

NO. Items    Specifications 

1 Model   20P1 (INR18650-2000)

2 Can Material  Ni-Iron 

3 Min  Capacity  1950 mAh（0.2C）

4 Nominal Voltage   3.7V

5 Max. Charge Voltage  4.2 V

6 Discharge Cut-off Voltage  2.750V

7 Max. Charge Current  4A

8 Max. Continuous Discharge Current   20 A

9 Max. Pulse Discharge Current  30A（ 2s pulse  ）

10 Max. Diameter（include PET） 18.4±0.05 mm

11 Max. Height (include PET)  65.25±0.15mm

12 Weight (Approx.) 43.0g

13 Impedance （Max. at 1000Hz、charged status）  15±3mΩ

14   Pack consistency   △Voltage △Impedance △Capacity

15  Charge Method (CC/CV)  Standard   0.5 C×3 hrs.

Quick 2C×1.0 hrs.

16  Operating temperature (surface temperature)  Charge  0℃～45℃

Discharge  -20℃～75℃

Storage  -20℃～45℃

Characteristic of High security lithium ion battery

a. Environmental conditions

Unless otherwise specified, all tests stated in this specification are conducted at temperature 23±3°and humidity under 65%.

b. Measuring equipment

(1) Amp-meter and volt-meter

The amp-meter and volt-meter should have an accuracy of the grade 0.5mA and mV or higher. 

(2)Slide caliper

The slide caliper should have 0.01 mm scale.

(3) Impedance meter

The impedance meter with AC 1kHz should be used.

c. Standard charge

Charging the cell CCCV with charge current 0.5C, constant voltage 4.2V and 100mA cut-off in CV mode at

23℃for capacity. 

d. Standard discharge capacity 

Discharge current of 400mA (0.2C) with 2.5V cut-off at 23℃within 1hour after the standard charge.

Electrical Characteristic for High temperature resistance lithium ion battery

NO. Item Standard Test Method

1 Discharge rate capabilities A）1 C  ≥97% B）5 C ≥95% B）10 C  ≥95% Standard charged under the condition of normal atmospheric pressure and the environmental temperature of 23℃±3℃ and45%～85%RH, then rest for 30mins and discharge at1C、5 C 、10C to the discharge cut-off voltage respectively. Charge/discharge cycle can be conducted for 3 times beforemeeting the Standards（the same below）

       2 capacity retention and recovery Residual capacity≥94%Recoverable capacity≥*98% Standard charged under the condition of normal atmospheric pressure and the environmental temperature of 23℃±3℃，Stored for 28 days, then discharge at 0.2 C to 2.75V measuring residual capacity; Then standard charge/discharge measure recoverable capacity.

3 Low TemperaturePerformance discharge capacity≥85% rated capacityno distortion and no rupture The cell shall be charged in accordance with the standard charge. Then stored in the temperature of -10℃±1℃ for4h, Discharge at the constant current of 0.2C down to the end-of-discharge voltage 2.50V.

4 Cycle Life 2A charge/ 10Adischarge≥500cycles4A charge/ 20Adischarge≥200cycles   Charge: The cell shall be charged in accordance with2A(4A)Charge condition and the end-of-charge voltage is4.15V. rest for 30mins.Discharge：10A discharge to 2.75V, one cycle is finished, rest for 60mins. Then repeat above steps, when capacity is lessthan 70% of initial capacity, the battery life is over. Discharge：20A discharge to 2.75V, one cycle is finished, rest for 60mins. Then repeat above steps, when capacity is lessthan 70% of initial capacity, the battery life is over.

Safety Characteristic for 2000mAh Li-ion battery supplier

NO. Item Standard Test Method

1 Overcharge No fire、No explosion After standard charge, rest for 10mins; then charge at constant current of 3C5A to 10V.(or charge at 3C5A for 90mins). 

2 Forced discharge No fire、No explosion The battery to be discharged with standard discharging condition, Inverse charge current =1C5A；time: ≥  90mins 

3 Short Circuit test No fire、 No explosion The battery to be fully charged with standard charging condition, and short the positive and negative terminals 

       with wire resistance  ≤50mΩ.Tests are to be conducted at 23℃±3℃  and a