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Pre-Nickel Plated 21700 Battery Steel Shell 18mm Diameter for Cylindrical Lithium Battery Accessories
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Pre-Nickel Plated 21700 Battery Steel Shell 18mm Diameter for Cylindrical Lithium Battery Accessories

MOQ: 50pcs
Price: Negotiable
Standard Packaging: Carton
Delivery Period: 5-7working days
Payment Method: L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Capacity: 100000pcs/month
Details Information
Product Description
Detail Information
Place of Origin
China
Brand Name
XWELL
Certification
CE
Model Number
21700
Model:
21700
Diameter:
21mm
Length:
70mm
Customizable:
Assist
Nickel Plating Thickness:
0.5-2μm
Hardness:
HV ≥ 180
Highlight:

18650 steel shell battery

,

pre-nickel plated lithium battery

,

AAA cylindrical battery accessories

Product Description
New Energy 21700/AA/AAA Battery Steel Shell – 3.7V Pre-Nickel Plated Cylindrical Lithium Battery Accessories
Our pre-nickel plated cylindrical battery steel shells are essential accessories for 3.7V new energy lithium batteries, available in 18650, AA, and AAA configurations. Manufactured from high-grade cold-rolled steel with advanced nickel-plating technology, these shells deliver exceptional structural integrity, corrosion resistance, and reliable electrical performance. Designed to protect battery cores and ensure stable operation, they are widely trusted in consumer electronics, household appliances, and new energy device manufacturing.
Key Product Features
  • Pre-Nickel Plated Surface: Uniform nickel coating (0.5-2μm thickness) enhances solderability and corrosion resistance, ensuring long-term electrical contact stability
  • High-Strength Material: Cold-rolled steel (SPCC grade) provides excellent hardness (HV ≥ 180) and impact resistance, preventing core deformation from external forces
  • Precision Dimensional Control: CNC processing ensures tight tolerance (±0.02mm), enabling perfect compatibility with battery cores and aluminum-plastic films
  • Leak-Proof Design: Smooth edges and consistent wall thickness optimize sealing performance during battery assembly, preventing electrolyte leakage
  • 3.7V Voltage Compatibility: Specifically engineered for 3.7V cylindrical lithium batteries, matching the operational parameters of mainstream new energy devices
Technical Specifications
Item 21700 Model AA Model AAA Model General Standard
Outer Diameter 21.0±0.02mm 14.5±0.02mm 10.5±0.02mm -
Inner Diameter 20.2±0.02mm 13.7±0.02mm 9.7±0.02mm -
Height 70.0±0.05mm 50.5±0.05mm 44.5±0.05mm -
Wall Thickness 0.4±0.01mm 0.4±0.01mm 0.35±0.01mm -
Material SPCC Cold-Rolled Steel SPCC Cold-Rolled Steel SPCC Cold-Rolled Steel SPCC
Nickel Plating Thickness 0.5-2μm 0.5-2μm 0.5-2μm RoHS Compliant
Hardness HV ≥ 180 HV ≥ 180 HV ≥ 170 ASTM E384 Standard
Application Range
These battery steel shells are ideal for 3.7V cylindrical lithium batteries used in:
  • Consumer Electronics: Power banks, Bluetooth headsets, digital cameras, portable speakers, smart wearables
  • Household Appliances: Flashlights, remote controls, electric toothbrushes, small kitchen appliances
  • New Energy Devices: Electric toys, portable medical equipment (blood glucose meters, nebulizers)
  • Industrial Uses: Emergency lighting, small-scale energy storage battery packs, security devices
Why Choose Our Battery Steel Shells?
• Years of industry experience delivering trustworthy solutions
• One-stop procurement for experimental materials
• Reliable quality with sufficient inventory supplied directly from our factory
We offer customization services for non-standard sizes, plating thickness, and surface treatments. Contact us for samples and technical support!
Tags: 

Lithium Ion Battery Raw Material,  

Battery Raw Material,  

lithium battery raw material

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Products
PRODUCTS DETAILS
Products

Battery Lab Equipment

Battery Production Line

Cylindrical Cell Production Line

Prismatic Cell Manufacturing

Pouch Cell Manufacturing

Lithium Ion Battery Raw Material

Cathode Material

Anode Material

Battery Electrolyte

Battery Separator

Coin Cell Parts

Cylindrical Cell Parts

Battery Tabs

Battery Current Collector

Battery Binder

Battery Conductive Materials

Battery Pack Materials

Welding Electrode

Welding Jig

Prismatic Battery Belt

Prismatic Battery End Plate

Battery Pack Case

Battery Insulation Sheet

Sodium Ion Battery Materials

Sodium Ion Battery Cathode Material

Solid State Battery Materials

Solid Electrolyte

Solid State Battery Separator

Battery Pack Accessories

Battery Pack Holder

Nickel Strip Sheet

Battery Pack Shrink Tube

Insulation Highland Barley Paper

Battery Pack Assembly Line

Battery Cell Sticking Machine

Battery Cell Sorting Machine

Battery Spot Welding Machine

Battery CCD Tester

Plasma Cleaning Machine

PVC Shrinking Machine

Nickel Strip Cutting Machine

Laser Cleaning Machine

Battery Laser Welding Machine

Prismatic Battery Compress Machine

Battery Testing Equipment

Battery Grading Machine

Battery Charge And Discharge Machine

BMS Testing Machine

Battery Comprehensive Tester

Battery Safety Testing Equipment

Waste Battery Crushing Recycling Line
  • name
  • name
  • name
Pre-Nickel Plated 21700 Battery Steel Shell 18mm Diameter for Cylindrical Lithium Battery Accessories
MOQ: 50pcs
Price: Negotiable
Standard Packaging: Carton
Delivery Period: 5-7working days
Payment Method: L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Capacity: 100000pcs/month
Detail Information
Product Description
Detail Information
Place of Origin
China
Brand Name
XWELL
Certification
CE
Model Number
21700
Model:
21700
Diameter:
21mm
Length:
70mm
Customizable:
Assist
Nickel Plating Thickness:
0.5-2μm
Hardness:
HV ≥ 180
Minimum Order Quantity:
50pcs
Price:
Negotiable
Packaging Details:
Carton
Delivery Time:
5-7working days
Payment Terms:
L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability:
100000pcs/month
Highlight

18650 steel shell battery

,

pre-nickel plated lithium battery

,

AAA cylindrical battery accessories

Product Description
New Energy 21700/AA/AAA Battery Steel Shell – 3.7V Pre-Nickel Plated Cylindrical Lithium Battery Accessories
Our pre-nickel plated cylindrical battery steel shells are essential accessories for 3.7V new energy lithium batteries, available in 18650, AA, and AAA configurations. Manufactured from high-grade cold-rolled steel with advanced nickel-plating technology, these shells deliver exceptional structural integrity, corrosion resistance, and reliable electrical performance. Designed to protect battery cores and ensure stable operation, they are widely trusted in consumer electronics, household appliances, and new energy device manufacturing.
Key Product Features
  • Pre-Nickel Plated Surface: Uniform nickel coating (0.5-2μm thickness) enhances solderability and corrosion resistance, ensuring long-term electrical contact stability
  • High-Strength Material: Cold-rolled steel (SPCC grade) provides excellent hardness (HV ≥ 180) and impact resistance, preventing core deformation from external forces
  • Precision Dimensional Control: CNC processing ensures tight tolerance (±0.02mm), enabling perfect compatibility with battery cores and aluminum-plastic films
  • Leak-Proof Design: Smooth edges and consistent wall thickness optimize sealing performance during battery assembly, preventing electrolyte leakage
  • 3.7V Voltage Compatibility: Specifically engineered for 3.7V cylindrical lithium batteries, matching the operational parameters of mainstream new energy devices
Technical Specifications
Item 21700 Model AA Model AAA Model General Standard
Outer Diameter 21.0±0.02mm 14.5±0.02mm 10.5±0.02mm -
Inner Diameter 20.2±0.02mm 13.7±0.02mm 9.7±0.02mm -
Height 70.0±0.05mm 50.5±0.05mm 44.5±0.05mm -
Wall Thickness 0.4±0.01mm 0.4±0.01mm 0.35±0.01mm -
Material SPCC Cold-Rolled Steel SPCC Cold-Rolled Steel SPCC Cold-Rolled Steel SPCC
Nickel Plating Thickness 0.5-2μm 0.5-2μm 0.5-2μm RoHS Compliant
Hardness HV ≥ 180 HV ≥ 180 HV ≥ 170 ASTM E384 Standard
Application Range
These battery steel shells are ideal for 3.7V cylindrical lithium batteries used in:
  • Consumer Electronics: Power banks, Bluetooth headsets, digital cameras, portable speakers, smart wearables
  • Household Appliances: Flashlights, remote controls, electric toothbrushes, small kitchen appliances
  • New Energy Devices: Electric toys, portable medical equipment (blood glucose meters, nebulizers)
  • Industrial Uses: Emergency lighting, small-scale energy storage battery packs, security devices
Why Choose Our Battery Steel Shells?
• Years of industry experience delivering trustworthy solutions
• One-stop procurement for experimental materials
• Reliable quality with sufficient inventory supplied directly from our factory
We offer customization services for non-standard sizes, plating thickness, and surface treatments. Contact us for samples and technical support!
Tags: 

Lithium Ion Battery Raw Material,

Battery Raw Material,

lithium battery raw material

GUANGDONG XWELL TECHNOLOGY CO., LTD.
Room 316, Building 3, No. 801, Qiaoxing Avenue, Xiaoluo Village, Shatou Street, Panyu District, Guangzhou
Tel: +8618620492985
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