HONG KONG TAC INDUSTRIAL CO., LTD.

              Your Personal Battery Expert!

      Vivian@tacbattery.com                         Mobile : 18028330146

 

Home
Products
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
Company News
Home ProductsLithium Ion Cylindrical Battery

21700 Lithium Battery 3.7V 3000MAH 30C High Power for EV E-Car

Good quality 3.2V LiFePO4 Battery for sales
Good quality 3.2V LiFePO4 Battery for sales
Dear Davide, I leave you in Vivian's hands, I'm sure you will come to an agreement., Vivian is professional in our product.

—— Davide Bet

Here is the signed PI. Thank you , We hope

—— Mr Ander

12V 110Ah battery pack for solar product I like your solar battery pack. Good quality and delivery fast.

—— Eyal Dolev

The battery pack is more atractive for us . May I receive drawing of other pack 12V 20AH with dimentional info ? I need 50pcs to test .

—— Nizamettin

We have received the battery packs and performing tests have passed . We are impressed by the assembly. it is almost the best one . thank you

—— Alexander Kozhushko

Pictures show a nice battery pack, performance is ok , We need serial connected 4cells (4S1P) configuration with protection circuitry

—— George Komisar

big thanks for your work, we got the cargos last week, it seems nice.

—— Johnny Black

I think it is a good idea to solve the problem, I am really appreciate you would like to help us.

—— Simone Kowalk

yes , we received the batteries and chargers last Friday, Everything looks great,well packed, no damage and dlivered in the time frame as promised.

—— Met vriendelijke groet

Thanks for your input, we have checked each and every think and on our side every thing is great. Just proceed to submit the company documents to get approval.

—— Joey Schumer

I'm Online Chat Now

21700 Lithium Battery 3.7V 3000MAH 30C High Power for EV E-Car

China 21700 Lithium Battery 3.7V 3000MAH 30C High Power for EV  E-Car supplier
21700 Lithium Battery 3.7V 3000MAH 30C High Power for EV  E-Car supplier 21700 Lithium Battery 3.7V 3000MAH 30C High Power for EV  E-Car supplier 21700 Lithium Battery 3.7V 3000MAH 30C High Power for EV  E-Car supplier

Large Image :  21700 Lithium Battery 3.7V 3000MAH 30C High Power for EV E-Car

Product Details:

Place of Origin: guangzhou
Brand Name: TAC
Certification: CE\UN38.3\ROHS
Model Number: 20700

Payment & Shipping Terms:

Minimum Order Quantity: 5000pcs
Price: usd 3-5
Packaging Details: 20pcs/ inner box , 5 box/ carton
Delivery Time: 10 word days
Supply Ability: 300000pcs /month
Contact Now
Detailed Product Description
Material: Lithium Ion Battery Voltage: 3.7v
Capacity: 3000mah Discharge Rate: 30C
Size: D: 21mm H:70mm PVC Color: Blue
Circle Life: 500 Times Current: Max Discharge Current 30C

21700 Lithium Battery 3.7V 3000MAH 30C High Power for EV E-Car

 

Feature for 21700 Lithium Battery 3.7V 3000MAH 30C High Power for EV E-Car

  1. new model 21700 similar with Tesla ,
  2. high capacity 3000mah and high power support 30c discharge current
  3. 21700 / 20700 size
  4. circle life : 500 times

 

Specification for 21700  Lithium Battery 3.7V 3000MAH 30C High Power for EV E-Car

 

No. Items Specifications

Remark

1

Nominal Capacity

3000mAh

0.5C Standard discharge

 

2

Minimum Capacity

2800mAh
3

Nominal Voltage

3.7V

Mean Operation Voltage

 

4

Delivery voltage

3.70~3.9V

Within 10 days from Factory

 

5

Charge Voltage

 

4.2V±0.03V

By standard charge method

 

6

Standard charging method

 

0.5C constant current,4.2V constant voltage charge to 4.2V,continue charging till current decline to ≤0.01C

 

7

Charge current

0.2C 600mA

Standard charge, charge time about 7h(Ref)

 

0.5C 1500mA

Rapid Charge, charge time about: 3.5h(Ref)

 

8

Standard discharging method

 

0.5C constant current discharge to3.0V,  
9

Cell Internal Impedance

 

≤35mΩ

Internal resistance measured at AC 1KHZ after 50% charge

 

 

 

Similar Model

 

ICR18650 

ICR14500

ICR17335

ICR16340

ICR10280

ICR10440

 

 

 

Rated Capacity at 0.5C(Min.)

 

After standard charge, the capacity shall be
measured on 0.5C discharge till the voltage,discharge to2.75V, the capacity is ≥2800mAh

 

Cycle Life:

 

Charging and discharging battery as blew
conditions 0.5C standard charge to 4.2V end-off1C standard discharge to 2.75V cut-off Continuous charge and discharge for 500cycles ,the capacity will be measure after the 500th cycle

 

Capacity retention

 

The battery to be charge in accordance with standard charge condition at 20~25℃,then storage
the battery at an ambient temperature 20~25℃ for 28 days.
Measure the capacity after 28 days with 0.2C at 20~25℃ as retention capacityThe battery to be charge in accordance with standard charge condition at 20~25℃,then storage battery at an ambient temperature 20~25℃ for 28 days.
Measure the capacity after 28 days with 0.2C at  20~25℃ as retention capacity the Retention capacity

should be over 80%

 

 

Battery Photos

 

21700 Lithium Battery 3.7V 3000MAH 30C High Power for EV  E-Car

 

Packing

21700 Lithium Battery 3.7V 3000MAH 30C High Power for EV  E-Car

 50pcs for one inner box ,  6 box for one carton

 

Period of Warranty

 

The period of warranty is one year from the date of shipment. We guarantees to give a ccin case of cells with defects proven due to manufacturing process instead of the customer abuse and misuse.

 

Storage of the Batteries

The batteries should be stored at room temperature, charged to about 30% to 50% of capacity.
We recommend that batteries be charged about once per half a year to prevent over discharge.

 

Other The Chemical Reaction

Because batteries utilize a chemical reaction, battery performance will deteriorate over time even if stored for a long period of time without being used. In addition, if the various usage conditions such as charge, discharge, ambient temperature, etc. are not maintained within the specified ranges the life expectancy of the battery may be shortened or the device in which the battery is used may be damaged by electrolyte leakage. If the batteries cannot maintain a charge for long periods of time, even when they are charged correctly, this may indicate it is time to change the battery.

 

Contact Details
HONG KONG TAC INDUSTRIAL CO., LTD.

Contact Person: Vivian

Send your inquiry directly to us (0 / 3000)