Eefst Long Cycle Lifes Rechargeable 30A 21700 li-ion 3.7v 4000mah Battery With KC Certificate

FOB Reference Price:Get Latest Price
$5.10 - $6.50 / Piece | 1 Piece/Pieces (Min. Order)
Battery Type:
Cylindrical
Nominal Capacity:
4000mah
Nominal Voltage:
3.7V
Shipping:
Support Express · Sea freight · Land freight · Air freight
Lead Time:
Quantity(Pieces) 1 - 5000 >5000
Est. Time(days) 3 Negotiable
Customization:
Customized logo (Min. Order: 3000 Pieces)
Customized packaging (Min. Order: 3000 Pieces)
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Overview
Quick Details
Application:
Power Tools, Electric Bicycles/Scooters, electric vehicles, Electric Wheelchairs, Flashlight,Electronic tools, Electric Bike,E-scooter,Digital Products
Brand Name:
Efest
Model Number:
Efest 21700
Place of Origin:
Guangdong, China
Product name:
Efest 21700 battery
Color:
Purple battery lithium ion
Continuous Discharging Current:
30A
Battery type:
Lithium Iron Battery Cell
Weight:
90g
Warranty:
6 Months
Cycle life:
500-1000 Times
Certificate:
CE/RoHS/UN38.3/MSDS/UL
Skype:
sales.efest25
Certification:
UL
Supply Ability
Supply Ability:
3000000 Piece/Pieces per Week
Packaging & Delivery
Packaging Details
Each battery with a single paper box, two batteries with a middle size paper box. 160pcs batteries packaged in a bigger paper box
Port
Shenzhen
Picture Example:
package-img
Lead Time :
Quantity(Pieces) 1 - 5000 >5000
Est. Time(days) 3 To be negotiated
Video Description

Eefst Long Cycle Lifes Rechargeable 30A 21700 li-ion 3.7v 4000mah Battery

Product Description

 

Product Name

Efest 21700 4000mah 30A 3.7V Lithium Battery

Size

21*70.0mm

Nominal voltage

3.6V

End-of-charge voltage

4.20V

End-of-discharge Voltage

2.50v

Typical Capacity

4000mAh (0.2C discharge)

Min capacity

3900mAh (0.2C discharge)

Weight

Max:69g

Internal resistance

Max:8mΩ

Standard Charge

2000mA,CCCV 100mA cut-off

Charging Time

3hours(standard charge)

Quick Charge Current

4000mA

Max Continuous Discharge Current

30000mA

Operating Temperature

 

Charging, 0°C ~ 45°C

Discharging, -20°C~70°C

Storage    Temperature

-5°C~35°

Storage  Humidity

≤75%RH

Appearance

Without scratch,distorion,contamination,and leakage

Standard environmental condition

 

 

Temperature:  23±5°C

Humidity   :45-75%RH

Atmospheric Pressure :86-106KPA


Battery safety Warnings before use:   

1. Do not submerge the battery in the water.
2. Do not mix fresh batteries with used batteries.
3. Do not mix batteries with metal stuff together.
4. Do not insert batteries with the (+) and (-) reversed.
5. Do not use Efest batteries with defective E-cig mods.
6. Do not disassemble, dispose in fire, heat or short circuit.
7. Do not put the battery in a charger or equipment with wrong terminals connected.

 

 

Product Overviews

 

 

 

Why choose Efest

1.ADVANTAGE:

  • Focus on mods battery and charger over 8 years.
  • ORIGINAL EFEST FACTORY WHOLESALE BOTTOM PRICE.
  • UL, FCC, CE, UN38.3, MSDS and Global Insurance are availiable.
  • QUICK SHIPPING WITHIN 3 DAYS.
  • NO MOQ , Sample order is accepable
  • FACTORY WARANTTY. SUPPORT 7 DAYS REFUND.

kindly reminder:

all our certifications is  REAL ONE.
NOT FAKE , NOT FAKE , NOT FAKE !!!
PLEASE CONTACT US TO SHOW YOU!!!
 
WE HAVE CERTIFICATION FOR : 
* Charger CE,ROHS,UL,FCC 
* Batteries CE,ROHS,UL,FCC,MSDS,UN38.3 Certification for Safe Transport of Goods

 

Packaging & Shipping

2.GIFT PACKAGE  

 

 

Delivery Details:

  • Within 2-3 days after receiving payment(based on actual quantity)
  • Tracking NO. will be sent to you after delivery, and we will track the goods for you until you receive all of them.
  • DHL/FedEx/UPS: 3-5 workdays (for small volume)
  • Air Shipping: 5-7 workdays
  • Sea Shipping: 20-28 days
Buyer Feedback

We always love it when we receive a happy online review from all Efest CUSTOMERS!

Take a look at the latest positive review we received from Alibaba Oline Order:

 

[ TRUST YOU WILL LIKE OUR SERVICES, QUALITY AND PRICE ]

 

 

 

 

WORLD -WIDE CUSTOMERS COMMENTS & FEEDBACK

If you want to see more comments from our world-wide customers.
You can check all the comments at our company profile .
Please visit https://e-young.en.alibaba.com/ and https://efest.en.alibaba.com/
click " Company profile , then choose " Business Performance" and turn to "Rating&Reviews" 

Then you can see all comments from our clients.
{ please note : all our customer comments is real one , NOT FAKE . 

 

 

 

ORDERS WE USUALLY RECEIVED

 

Related Products

 

 

                                           20700   21700   26650   18500   18350   14500    batteries    

 

In Stocks!! Hot 18650/20700/21700/26650 Battery case/Battery holder/Vape bag/Car charger/ Battery replace wrap!!!

 

 

FAQ

1. Are you original Efest and factory?

Yes, we are original Efest, based in Shenzhen, china. specialized in 3.7v high drain li-ion battery and charger over 8 years.

 

2.How to confirm the products original one?
Just check this link from our official website 
http://www.efestpower.com/index.php?ac=article&at=list&tid=126

3.What’s the warranty on your product?
Just check our warranty details from this link

http://www.efestpower.com/index.php?ac=article&at=list&tid=129

4.Do you have MOQ ?
No limited. But the more you take, the better price you will received.

5.Can you accept deposit for order?
Yes, we can accept 30% deposit when preparing your order, just make sure full payment before shipping.

 

Contact us

24-hour online service, please feel free to inquiry us!!!

Skype: sales.efest25        Whats app:+86 15016782193

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