A Leader of Lithium Lifepo4 Battery in China Since 2006

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GSL ENERGY 21700 cell

GSL ENERGY 21700 cell

GSL ENERGY 21700 cell

Battery Type
21700 Battery
Brand
GSL ENERGY
Model No
GSL-ICR21700-4000mAh-3.7V
Battery combination
3.7V 4000mAh
Rated voltage
3.7V
Capacity
4000mAh
Size ( mm) / Size ( inch) L*W*H
21*70mm
Weight
65g
Application
EV,AGV, Robots, Solar UPS, Solar street led lights, golf carts, Marine UPS.
Package
UNCarton
Payment terms
T/T
Delivery time
With 15 days after deposit
Price
Get Latest Price
Get the latest price
Quantity Needed:
Pieces
E-mail:
Company Advantages
1. Body frame structure of 21700 battery is optimized by means of 21700 cell. Our Li-Ion Battery achieves extreme use and longevity with GSL deep cycle technology
2. [企业简称] has strong technical force, rich production experience and advanced production equipment. Besides, we carry out the production based on advanced technology. All this ensures powerful performance and superior quality of 21700 battery .
3. This product is thoroughly tested on various stages by our quality controllers as per the set industrial norms. The battery case of GSL Li-Ion battery is made from a Non-Conductive ABS plastic

2019 New Best Bechargeable Battery 3.7V 4000mAh 21700 Battery For Tesla Powerwall

GSL ENERGY 21700 cell-1

1. Application Scope

This product specification describes product performance indicators of Lithium-ion battery produced by SHENZHEN GSL TECH CO LTD.

2. Model

ICR21700-4000mAh-3.7V

3. Appearance and Dimension

GSL ENERGY 21700 cell-2 

 

Item

Dimension (mm)

Diameter

21±0.1

Height(H)

70±0.4

 

4. Major Technical Parameters

No.

Item

Standard

Note

1

Standard Capacity

4000mAh

0.5C,(current value of 2200mA at 1C)

2

Capacity Range

3950~4250mAh

0.5C

3

Standard Voltage

3.7 V


4

Alternating Internal Resistance

≤60mΩ

with PTC

5

Charge Conditions

Cut-off Voltage

4.2±0.05V

constant current charge to 4.2V at 0.5C,

constant voltage charge to stop  until 0.01C mA

Cut-off Voltage

0.01C

6

Discharge Cut-off Voltage

2.75V


7

Cycle Characteristic

1000 times

100% DOD, the residual capacity is no less than 70% of rated capacity at 1C rate.

8

Max. Continuous Discharge Current

3C


9

Pulse Discharge Current

5C, 5s


10

Working Temperature

Charge:0°C~55°C

Discharge:-20°C~60°C


11

Storage Temperature

-20°C ~ 45°C


12

Battery Weight

65 g (Approx.)


 

5. Characteristics Curves

GSL ENERGY 21700 cell-3

 

 6.Safety Characteristics                                                                                                                                   

NO

Item

Test Method

Standard

                  1                         

Overcharge

After normal charge, test the batteries’ initial state and capacity. Charge to 10.0V at 3C, then charge at CV mode to 0.01C. Observe battery’s variation of appearance.

No explosion, No fire.

2

Over Discharge

After normal charge, test the batteries’ initial state. When the batteries are normal, Discharge to 0V at 0.5C. Observe battery’s variation of appearance.

No explosion, No fire.

3

External Short-circuit

After normal charge, test the batteries initial state, Keep the battery into explosion protection cover, short-circuit the positive and negative terminals directly (general resistance shall be less than or equal to 50mΩ). Stop the test when the temperature falls to 10℃ lower than the peak value. Observe the variation of the batteries’ appearance and temperature.

No explosion, No fire.

4

Thermal Abuse  

Test the batteries’ initial state and capacity. Standard charge. Put battery into oven, increase the temperature to 130±2℃ at rate of (5±2℃) /min, and keep it for 30min. Observe the variation of batteries’ appearance.

No explosion, No fire.

5

Drop

After normal charge, test the batteries’ initial state and capacity. Then let it fall from a height of 1m (the lowest height) to a smooth cement floor, twice.

No explosion, No fire.

6

Heavy Impact

A diameter of 15.8 mm steel rod is placed in the middle of the fully charged battery, then the weight of 10Kg hammer from 1.0m height free falls to the battery upper.

No explosion, No fire.

7

Extrusion Test

Place the battery in between the pressing surface of extrusion apparatus, parallel the axes of cylindrical battery to the pressing surface, and gradually increase pressure up to 13KN, keeping the pressure for 1min.

No explosion, No fire.

 

 

 

GSL ENERGY 21700 cell-4

 

 

 

GSL ENERGY 21700 cell-5

  

 

SAFETY

Passed the below abuse and safety test-short-circuit, dropping, nail penetration, impact, crush, thermal shock, over-charge,over-discharge: no fire, no explosion with stable chemical structure.


GSL ENERGY 21700 cell-6

 

 


APPLICATIONS


 

GSL ENERGY 21700 cell-7

 


1.Energy Storage
   --Solar-Wind Power System / City Grid (On/Off) / Community and Family
2.Back-up System and UPS
   --Telcom Base / CATV system / Computer Server Center / Medical Instrumnt / Military Equipment 
3.Other Applications
   --Security and Electronics / Mobile POS, Mining Lihgt / Torch / LED Light / Emergency Light 
   --RV Motorhome /Golf Carts Battery / Boat Marine Yachts / Electric Skateboard
   --LED Backup / Engine Starting Battery,etc.

 

 


WHY CHOOSE US ? 

1.Experience--More than 12 years Specialized in lithium battery, Gold Supplier on Alibaba. 
2.Certification--CE,UL,MSDS,Test Report from National Center For Quality Supervision and Inspection of Battery Products approved.
3. Quality Control-- 37 production process,7 steps quality check to promise stable quality and high reliability for you.
4. Best Material-- Insist on choosing top quality cell, material and accessories,lithium battery last longer time.
5. Fresh battery-- All battery is fresh Production.

 

GSL ENERGY 21700 cell-8

 


 

Company Information

KS ENERGY is focused on manufacturing, R&D and sales for safe Lithium battery and solutions. With the registration and certification of CE, SGS, ROHS.  Striving to grow into a global leading lithium battery supplier, KS ENERGY has been working hard on researching and developing new process technology to make our lithium battery more affordable and able to meet the rapidly growing market demands.

As a sub-factory of GSL GROUP, KS ENERGY is specializes in clean and new energy on lithium ion battery products. 

 

GSL ENERGY 21700 cell-9

 

 

Welcome To Visit Our Factory

 

GSL ENERGY 21700 cell-10

 

 

Through years development and experienced international sales team in Shenzhen, KS ENERGY green solar and lithium battery products have been sold to clients all over the world.

 

GSL ENERGY 21700 cell-11

 

 

Since 2006, KS ENERGY has maintained a corporate philosophy that is characterized by entrepreneurship, innovation, competition and transcendence. Today KS has established a solid foundation in two major industries: photovoltaic and Lithium, with its four production bases in Shangdong, Zhejiang, Sichuan, Guangdong. 

 

GSL ENERGY 21700 cell-12

 


Our Services

KS ENERGY partners with customers to provide complete energy storage solutions that enable the rapid development and delivery of innovative products that meet demand in both existing and emerging markets.

--Professional pack module design on cylindrical and Prismatic design.

--Fast Production and Delivery time.

 

Packaging & Shipping

GSL ENERGY 21700 cell-13

 



Company Features
1. We have a high-efficient manufacturing factory. It is furnished with the most modern manufacturing facilities that enable us to increase the production capacity as well as to improve the efficiency of production.
2. We value sustainable development. Toward the goal of a responsible and sustainable supply chain, we will always work hard on identifying and providing appropriate sustainable products.
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