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Home ProductsLithium Ion Cylindrical Battery

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: guangzhou
    Brand Name: TAC
    Certification: CE\UN38.3\ROHS
    Model Number: 21700

    Payment & Shipping Terms:

    Minimum Order Quantity: 5000pcs
    Price: USD 2.5 each pcs
    Packaging Details: 20pcs/ inner box , 5 box/ carton
    Delivery Time: 10 work days
    Supply Ability: 300000pcs /month
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    Detailed Product Description
    Material: Lithium Ion Battery Voltage: 3.7v
    Capacity: 4000mah Discharge Rate: 0.2C
    Size: D; 21mm H:70mm Circle Life: 500 Times
    Current: Max Discharge Current 0.2C Warranty: 12 Months

    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

    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

    0.2C400mA

    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

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

    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

    3.7V

     
     

    Battery Photo for Similar Model ( Bulk cell)

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

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

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

    Contact Details
    HONG KONG TAC INDUSTRIAL CO., LTD.

    Contact Person: Vivian

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