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600 Cycles 3.6 Volt Battery 40A Discharge 4000mAh 21700 Battery High Capacity

600 Cycles 3.6 Volt Battery 40A Discharge 4000mAh 21700 Battery High Capacity

  • Highlight

    600 Cycles 3.6 Volt Battery

    ,

    40A Discharge 4000mAh 21700 Battery

    ,

    4000mAh 21700 Battery High Capacity

  • Name
    3.6 Volt Battery
  • Battery Type
    3.6V 4000mAh Rechargeable
  • ODM
    Free Custom Design For Packs
  • Positive Electrode Material
    NCA (Nickel Cobalt Aluminum)
  • Cycle Life
    600+ Cycles
  • Charging/ Discharging
    8A/40A
  • Operating Temperature
    -40°C~60°C
  • High Energy Density
    209Wh/kg
  • Place of Origin
    China
  • Brand Name
    OiD
  • Certification
    BIS, KC, BSMI, CB, UL, CCC
  • Model Number
    INR21700L40A40
  • Minimum Order Quantity
    100pcs
  • Price
    $0.5 ~ $100.0 / pcs
  • Delivery Time
    3 ~ 7 days for storage
  • Payment Terms
    TT, L/C, Western Union

600 Cycles 3.6 Volt Battery 40A Discharge 4000mAh 21700 Battery High Capacity

INR21700L40A40 3.6V 4000mAh 40A Discharge 600 Cycles 21700 Battery

Product Name:
INR21700L40A40 21700 Battery

 

Advantages:

  • High capacity for extended runtime
  • Superior performance in low-temperature environments
  • Long cycle life with reliable capacity retention
  • Certified for safety and quality assurance

Specifications:

Parameter

Value

Model

INR21700L40A40

Nominal Voltage

3.6V

Nominal Capacity

4000mAh

Positive Electrode Material

NCA (Nickel Cobalt Aluminum)

Negative Electrode Material

Graphite + Silicon

Dimensions (Diameter x Height)

≤21.30 mm x ≤70.40 mm

Weight

≤69.0g

Volume Energy Density

574 Wh/L

Weight Energy Density

209 Wh/kg

Internal Resistance

≤13mΩ

Charging Cut-off Voltage

4.20V ± 0.05V

Discharge Cut-off Voltage

2.50V

Maximum Charging Current

8.0A

Maximum Continuous Discharge Current

40A

Terminal Type

Standard 21700 Flat Top

 

Cycle Life:

Test Condition

Performance

4A Charge / 4A Discharge

600 cycles, capacity retention ≥60%

6A Charge / 10A Discharge

400 cycles, capacity retention ≥50%

 

Discharge Curve:
600 Cycles 3.6 Volt Battery 40A Discharge 4000mAh 21700 Battery High Capacity 0

 

Operating Temperature Range:

Parameter

Range

Charging Temperature

0°C to 50°C

Discharging Temperature

-40°C to 75°C

 

Certifications:
BIS, KC, BSMI, CB, UL, CCC

 

Key Features:

  • High capacity for extended runtime
  • Low internal resistance for efficient power delivery
  • Suitable for extreme temperature environments
  • Certified for global safety standards

Applications:

  • Electric vehicles and hybrid vehicles
  • Power tools and industrial equipment
  • Portable medical devices
  • Energy storage systems (ESS)
  • Emergency lighting and backup power

600 Cycles 3.6 Volt Battery 40A Discharge 4000mAh 21700 Battery High Capacity 1

Usage Warnings & Precautions:

  • Avoid overcharging or over-discharging the battery.
  • Do not expose the battery to high temperatures or direct sunlight.
  • Use only compatible chargers and devices.
  • Keep away from children and flammable materials.

Storage Guidelines:

  • Store in a cool, dry place at 20°C to 25°C.
  • Maintain a charge level of 30% to 50% for long-term storage.
  • Avoid storing in fully charged or fully discharged states.

Warranty & Disclaimer:
This product is covered by a limited warranty against manufacturing defects. The warranty does not cover damage caused by misuse, improper handling, or unauthorized modifications. Always follow the manufacturer’s guidelines for safe and optimal use.