• ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH
  • ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH
  • ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH
  • ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH
ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH

ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH

Product Details:

Place of Origin: Shenzhen zhuhai
Brand Name: TAC OEM & ODM
Certification: MSDS REACH ROHS
Model Number: 21700 400mah 3.7v

Payment & Shipping Terms:

Minimum Order Quantity: 500 pcs for single cell , 50pack for battery packs
Price: USD 2.5 each pcs
Packaging Details: meet UN38.3 Certification
Delivery Time: 7-10 days after order confirm for stock model
Payment Terms: 30% advance for battery Pack
Supply Ability: 100000PCS EACH WEEK
Get Best Price Contact Now

Detail Information

Material: Lithium Ion Battery Voltage: 3.7v
Capacity: 4000mah-5000mah Discharge Rate: 0.2C
Size: D: 21mm H:70mm Circle Life: 500 Times
Current: Max Discharge Current 0.2C Warranty: 12 Months
Color: Purple \ Blue And OEM Positive Type: Flat And Top
High Light:

lithium iron phosphate battery pack

,

3.7v lithium ion battery

Product Description

ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH

21700 Lithium Battery For Electrical Vehicle 3.7V 4000MAH 

Specification for 21700 Lithium Battery For Electrical Vehicle 3.7V 4000MAH

 
No.ItemsSpecifications

Remark

1

Nominal Capacity

4000mAh-5000mAH

0.5C Standard discharge
 

2

Minimum Capacity

3800mAh-4800mAh
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

0.2C400mA

Standard charge, charge time about 7h(Ref)
 

0.5C2000mA

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

8

Standard discharging method
 

0.5C constant current discharge to3.0V, 
9

Cell Internal Impedance
 

≤50mΩ

Internal resistance measured at AC 1KHZ after 50% charge
 

 

Cell Electrical Performance

 

NoItemsTest Method and Condition/
 
Criteria
1

Rated Capacity at 0.2C(Min.)
 

After standard charge, the capacity shall be measured on 0.2C discharge till the voltage discharge to3.0V,
 

≥3800mAh≥100%

Rated Capacity at 0.5C(Min.)
 

After standard charge, the capacity shall be measured on 0.5C discharge till the voltage discharge to 3.0V,
 

≥3686mAh≥98%

Rated Capacity at 1C(Min.)
 

After standard charge, the capacity shall be measured on 1C discharge till the voltage discharge to 3.0V,
 

≥3534mAh≥96%
2

Cycle Life
 

Charging and discharging battery as blew conditions
0.2C standard charge to 4.2V end-off
0.2C standard discharge to 3.0V cut-off
Continuous charge and discharge for 300 cycles ,the capacity will be measure after the200th cycle
 

≥80% of initial capacity
3

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 30 days with 0.2C at 20~25℃ as retention capacity
 

Retention capacity
 
≥85%

 

Application for 21700 Lithium Battery For Electrical Vehicle 3.7V 4000MAH

  1. EV / E-CAR /  E-SCOOTER /E-Bike
  2. Energy storage system// Portable ESS
  3. power tool /
  4. Solar production
  5. 21700 cells with cap  in electric bikes.

Package For Bulk 

  20-50 pcs each box and 4 box pcs in one standard export carton
  Tac Also support display box and specially color carton for OEM ODM order 
 
  ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH 0
 
ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH 1
 

Delivery Time Information

7-10 days for bulk cell base on industry pack , this is normal model , we prepare the stock continue
25-30 days for battery pack after the customer confirm the detail accessories for examples PCB Connector etc.
 

Period of Warranty

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

 

The suggestion for Storage of the Lithium-ion 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.

 

Similar Model for Lithium ion Cylindrical Battery

MODELCAPACITYVOLATGE
ICR10440250-400MAH3.7V
ICR14500450-600MAH3.7V
ICR17335750-900MAH3.7V
ICR184901100-1500MAH3.7V
ICR185001500-1800MAH3.7V
ICR186502000-2800MAH3.7V
ICR266503000-3300MAH3.7V
ICR207003500MAH3.7V
ICR217004000MAH-5000MAH

3.7V

 
 
 
 

Battery Photo for Similar Model ( Bulk cell)

ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH 2
 
 
 

Lithium-ion Battery Pack Made By ICR21700 4000MAH 3.7V 

 
ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH 3
 
Normally 21700 Cell positive is flat type , but we can support both of flat type and top type
 
Flat Type
 
ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH 4
 
TOP Type
 
ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH 5

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