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Shenzhen Jianheng Technology Co., Ltd.

  • China,Shenzhen
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China 21700 Battery 3000mAh 40A High Energy Density Li-Ion
China 21700 Battery 3000mAh 40A High Energy Density Li-Ion

  1. China 21700 Battery 3000mAh 40A High Energy Density Li-Ion
  2. China 21700 Battery 3000mAh 40A High Energy Density Li-Ion
  3. China 21700 Battery 3000mAh 40A High Energy Density Li-Ion
  4. China 21700 Battery 3000mAh 40A High Energy Density Li-Ion

21700 Battery 3000mAh 40A High Energy Density Li-Ion

  1. MOQ: 100pcs
  2. Price: $0.5 ~ $100.0 / pcs
  3. Get Latest Price
Delivery Time 3 ~ 7 days for storage
Payment Terms TT,L/C,Western Union
Name 21700 Battery
ODM Free custom design for packs
Battery Type 3000mAh 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
Brand Name OiD
Model Number INR21700N30A40
Certification BIS, KC, BSMI, CB, UL, CCC
Place of Origin China

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  1. Product Details
  2. Company Details

Product Specification

Delivery Time 3 ~ 7 days for storage Payment Terms TT,L/C,Western Union
Name 21700 Battery ODM Free custom design for packs
Battery Type 3000mAh 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
Brand Name OiD Model Number INR21700N30A40
Certification BIS, KC, BSMI, CB, UL, CCC Place of Origin China
High Light High Energy Density 21700 Battery21700 Battery 40A3.7 V 3000mAh Li Ion Battery

INR21700N30A40 3.7V 3000mAh 40A 500 Cycles 21700 Battery

Product Name

INR21700N30A40 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

INR21700N30A40

Nominal Voltage

3.7V

Nominal Capacity

3000mAh

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: ≤21.40mm, Height: ≤70.45mm

Internal Resistance

≤15mΩ

Energy Density

Volume: 438Wh/L, Weight: 163Wh/kg

Terminal Type

Standard 21700 flat top or button top (customizable)

Cycle Life

Condition

Cycles

Capacity Retention

4A Charge / 15A Discharge

500

≥70%

6A Charge / 30A Discharge

300

≥60%

6A Charge / 40A Discharge

200

≥60%

Discharge Curve

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

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.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Distributor/Wholesaler

  • Year Established:

    2020

  • Total Annual:

    15000000-20000000

  • Employee Number:

    300~500

  • Ecer Certification:

    Verified Supplier

Our Mission:  Original Innovation, Power the Future! As a high-tech enterprise specializing in the R&D and manufacturing of lithium-ion batteries, sodium-ion batteries, and solid-state batteries. Founded in 2020 in Shenzhen, China’s innovation hub, we are driven by our core philosop... Our Mission:  Original Innovation, Power the Future! As a high-tech enterprise specializing in the R&D and manufacturing of lithium-ion batteries, sodium-ion batteries, and solid-state batteries. Founded in 2020 in Shenzhen, China’s innovation hub, we are driven by our core philosop...

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Get in touch with us

  • Reach Us
  • Shenzhen Jianheng Technology Co., Ltd.
  • 2# Building, Shimao Park, Zhenhuan Rd, Pingshan, Shenzhen, China.
  • https://www.liion-batt.com/

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