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21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
Specifications
Brand Name :
OiD
Model Number :
INR21700N40A40
Certification :
BIS, KC, BSMI, CB, UL, CCC
Place of Origin :
China
MOQ :
100pcs
Price :
$0.5 ~ $100.0 / pcs
Delivery Time :
3 ~ 7 days for storage
Payment Terms :
TT,L/C,Western Union
Name :
40A Battery
ODM :
Free custom design for packs
Battery Type :
4000mAh Rechargeable
Cathode :
NCM or NMC
Higher Energy Density :
LongerrRuntime for 20-30% more energy than 18650 cells
Superior Power Output :
Higher discharge rates (up to 40A)
Cost-Effective & Space-Saving :
Reduce pack weight and cost by requiring fewer cells in series and parallel
Future-Proof :
Ensure compatibility with next-gen tech for high-demand applications
Description

INR21700N40A40 3.7V 4000mAh 40A 300 Cycles 21700 Battery

Product Name

INR21700-4000-3.7 21700 Battery

Advantages

  • High energy density and long cycle life
  • Superior high-rate discharge capability for demanding applications
  • Enhanced safety and thermal stability
  • Certified for compliance with international standards

Specifications

Parameter

Value

Model

INR21700N40A40

Nominal Voltage

3.7V

Nominal Capacity

4000mAh

Charging Voltage

4.20V ± 0.05V

Discharge Cut-off Voltage

2.50V

Max Charging Current

6.0A

Max Continuous Discharge Current

40A

Weight

≤68.0g

Dimensions

Diameter: ≤21.30mm, Height: ≤70.40mm

Internal Resistance

≤15mΩ

Energy Density

Volume: 590Wh/L, Weight: 218Wh/kg

Terminal Type

Standard 21700 flat top or button top (customizable)

Cycle Life

Condition

Cycles

Capacity Retention

4A Charge / 20A Discharge

300

≥60%

4A Charge / 30A Discharge

200

≥60%

Discharge Curve

21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles

Operating Temperature Range

Condition

Temperature Range

Charging

0°C to 50°C

Discharging

-20°C to 75°C

Storage

-20°C to 45°C (recommended for long-term storage)

Certifications

  • BIS, KC, BSMI, CB, UL, CCC

Key Features

  • High discharge rate up to 40A
  • Excellent thermal stability and safety
  • Long cycle life with minimal capacity degradation
  • Environmentally friendly and RoHS compliant

Applications

  • Electric tools (e.g., drills, saws)
  • Floor cleaning machines (e.g., scrubbers, sweepers)
  • Vacuum cleaners
  • High-power portable devices

21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles

Usage Warnings & Precautions

  • Use only with compatible chargers and devices.
  • Avoid short-circuiting, overcharging, or over-discharging.
  • Do not expose to high temperatures, fire, or water.
  • Keep away from children and pets.

Storage Guidelines

  • Store at 20±5°C with 50% SOC for optimal performance.
  • Avoid storing in high humidity or extreme temperatures.
  • Recharge every 6 months if stored for extended periods.

Warranty & Disclaimer

  • 12-month limited warranty from the date of purchase.
  • Warranty does not cover damage due to misuse, improper charging, or unauthorized modifications.
  • Manufacturer is not liable for accidents caused by improper use.

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21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles

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Product Detail
Brand Name :
OiD
Model Number :
INR21700N40A40
Certification :
BIS, KC, BSMI, CB, UL, CCC
Place of Origin :
China
MOQ :
100pcs
Price :
$0.5 ~ $100.0 / pcs
Contact Supplier
21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles

Shenzhen Jianheng Technology Co., Ltd.

Verified Supplier
1 Years
shenzhen
Since 2020
Business Type :
Manufacturer, Distributor/Wholesaler
Main Products :
Lithium Ion Battery, LiFePo4 Battery, Solid State Battery
Total Annual :
15000000-20000000
Employee Number :
300~500
Certification Level :
Verified Supplier
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