Jiangsu Sunpower Co., Ltd.
Jiangsu Sunpower Co., Ltd.

Taizhou, Jiangsu, China

Response Time: < 24h

Response Rate: 100%

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

  • Min. Order:2000 Piece(s)
  • Date of Delivery:30 days
  • Payment Type:L/C, T/T
Jiangsu Sunpower Co., Ltd.
Jiangsu, China
  • Response Time: < 24h
  • Response Rate: 100%
Main Products: 18650 cylindrical power lithium-ion batteries
Model No.: 1 Brand: Sunpower Place of Origin: China

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:






 20P1 (INR18650-2000)


Can Material 



Min  Capacity 

1950 mAh0.2C


Nominal Voltage 



Max. Charge Voltage 

4.2 V


Discharge Cut-off Voltage 



Max. Charge Current 



Max. Continuous Discharge Current 

 20 A


Max. Pulse Discharge Current 

30A 2s pulse  


Max. Diameterinclude PET

18.4±0.05 mm


Max. Height (include PET) 



Weight (Approx.)



Impedance Max. at 1000Hzcharged status



  Pack consistency 

 △Voltage △Impedance △Capacity


 Charge Method (CC/CV) 


 0.5 C×3 hrs.


2C×1.0 hrs.


 Operating temperature (surface temperature) 








Characteristic of  https://www.sp-powerbattery.com/faq/

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





Test Method


Discharge rate capabilities

A1 C  ≥97% B5 C ≥95% B10 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 at1C5 C 10C to the discharge cut-off voltage respectively. Charge/discharge cycle can be conducted for 3 times beforemeeting the Standardsthe same below


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.


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.


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.Discharge10A 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. Discharge20A 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




Test Method



No fireNo explosion

After standard charge, rest for 10mins; then charge at constant current of 3C5A to 10V.(or charge at 3C5A for 90mins). 


Forced discharge

No fireNo explosion

The battery to be discharged with standard discharging condition, Inverse charge current =1C5Atime: ≥  90mins 


Short Circuit test

No fireNo 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 at 55℃ ±5℃, keep 24h or case temperature decline to 20% of the max temperature ,test is over. 


Crush test

No fireNo explosion

A battery is crushed between two flat surfaces. The applied force is 13 kN±1kN by hydrocylinder, Once the maximum pressure has been obtained or voltage decrease to 1/3 of nominal voltage sharply, then release pressure. 


Shock test

No fireNo explosion

The full charged battery is fixed on shock table, to force a certain shock to three mutual vertical direction, in initial 3ms, the min. average acceleration is 75gn,the peak acceleration is between 125gn and 175gn.


Heating test 

No fireNo explosion

The cells are fully charged with standard charging condition, and put into incubator with nature air or cycled air convected, heat battery by velocity of 5°C ±2°C/min to 130°C±2°C,and maintain for 10mins. 


 Cycling Test

no leakage, no fire, no explosion

The fully charged batteries are placed in a test chamber and subjected to the following cycles: a) Raising the temperature to 75°C ±2°C within 30 minutes and maintaining this temperature for 6 hours. b) Reducing the temperature to minus 40°C ±2°C within 30 minutes and maintaining this temperature for 6 hours. c) Repeating the sequence for a further 9 cycles. d) After the 10th cycle, storing the batteries for 24 hours prior to examination.



The cells are packed with JIANGSU SUNPOWER CO.,LTD. standard carton box, which hold four inner boxes. There are 150pcs 18650 cells per inner box. And each cell is held by a cardboard with 100 sockets.

Warranty Period & Product Liability  

Warranty period of this product is 12 months from manufacturing code. JIANGSU SUNPOWER CO., LTD. is not responsible for the troubles caused by mishandling of the battery which is against the instructions in this specification.


Warnings and Cautions in Using the Li-ion Rechargeable cylindrical battery 


To prevent a possibility of the battery from leaking, heating or explosion please observe the following precautions:

● When using a new battery for the first time or after long term storage, please use the battery charger specifically for that purpose fully charge the battery before use. 

● Do not disassemble or open, crush, bend or deform, puncture, or shred;

● Do not modify or remanufacture, attempt to insert foreign objects into the battery, immerse or expose to water or other liquids such as water, seawater, drinks such as soft drinks, juices, coffee or others, or expose to fire, explosion, or other hazard.

● Do not short circuit a battery or allow metallic or conductive objects to contact the battery terminals. 

● Avoid dropping the phone or battery. If the phone or battery is dropped, especially on a hard surface, and the user suspects damage, take it to a service center for inspection.

● The battery replacement shall be done only by either cells supplier or device supplier and never be done by the user. 

● Replace the battery only with another battery that has been qualified with the system per standard. Use of an unqualified battery may present a risk of fire, explosion, leakage, or other hazard. 

● Don't keep a battery at rest for a long time (over 6 months). Safety accident may happen when recharging battery which has a rest for a long time.

● In the event of a battery leak, do not allow the liquid to come in contact with the skin or eyes. If contact has been made, wash the affected area with large amounts of water and seek medical advice. 

● Battery usage by children should be supervised. Seek medical advice immediately if a battery has been swallowed

● Never disassemble cells. The disassembling may generate internal short circuit in the cell, which may cause firing or other problems. 

● Never incinerate nor dispose the cells in fire. These may cause firing of the cells, which is very dangerous and is prohibited.

● Do not remove the outer sleeve from a battery pack nor cut into its housing. 

● Do not mix our batteries with other battery brands or batteries of a different chemistry such as alkaline and zinc carbon. 

● Do not mix new batteries in use with semi-used batteries, over-discharge may occur. 

● Promptly dispose of used batteries in accordance with local regulations.




The cells might be damaged during shipping by shock. If any abnormal features of the cells are found such as deformation of the cell package, smelling of an electrolyte, an electrolyte leakage and others, the cells shall never be used any more. The Cells with a smell of the electrolyte or a leakage shall be placed away from fire to avoid firing.



The cell shall be stored at the environmental condition of -20℃ - 45℃ and 65%±20% RH. The voltage for long time storage shall be 3.6V-3.9V range. If the cell has to be storied for a long time (Over 3 months), the environmental condition should be: Temperature: 23℃±3℃ Humidity: 65%±20RHplease activate the battery once every 3 months according to the following method: Charge with current 0.2C5A until the voltage achieve to 4.0V.


The company founded in 2014, focus on producing cylindrical power lithium-ion batteries. The company supply Electric vehicle cylindrical lithium battery, which include 1500mAh, 1300mAh, 2000mAh, 2200mAh, 2500mAh, 2600mAh Li-ion battery and 3000mAh Li-ion battery. All adopt the most advanced extrusion coating production technology and yearly production reaches to 250 million Ah power type 18650 High security lithium ion battery. Our products have high quality and competitive prices.

If you want to learn more about the High security lithium ion battery, please visit here.



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Contact Details

Yuanyuan Zhang

Yuanyuan Zhang






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