ROHS 21700 Lithium Ion Battery For Electrical Vehicle

21700 Lithium Battery For Electrical Vehicle 3.7V 4000MAH Specification for 21700 Lithium Battery For Electrical Vehicle 3.7V 4000MAH Cell Electrical Performance Application for 21700 Lithium Battery For Electrical Vehicle 3.7V 3000MAH 30C EV / E-CAR / E-SCOOTER /E-Bike Energy storage system//...

Product Details

ROHS 21700 Lithium Ion Battery For Electrical Vehicle

21700 Lithium Battery For Electrical Vehicle 3.7V 4000MAH 

 

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

 
No. Items Specifications

Remark

1

Nominal Capacity

4000mAh

0.5C Standard discharge

 

2

Minimum Capacity

3800mAh
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 400mA

Standard charge, charge time about 7h(Ref)

 

0.5C 2000mA

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

 

 

Circle Life Test Method and Standard

 

No Items Test 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 ROHS 21700 Lithium Ion Battery For Electrical Vehicle

  1. EV / E-CAR /  E-SCOOTER /E-Bike
  2. Energy storage system// Portable ESS
  3. power tool /
  4. Solar production

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 

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 ccin 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.

 

Product List for Lithium ion cylindrical Battery

MODEL CAPACITY VOLATGE
ICR10440 250-400MAH 3.7V
ICR14500 450-600MAH 3.7V
ICR17335 750-900MAH 3.7V
ICR18490 1100-1500MAH 3.7V
ICR18500 1500-1800MAH 3.7V
ICR18650 2000-2800MAH 3.7V
ICR26650 3000-3300MAH 3.7V
ICR20700 3500MAH 3.7V
ICR21700 4000MAH

3.7V

 

 

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