AA & AAA Battery Metal Caps
Reliable Terminal Solutions for Alkaline and Lithium Batteries
Product Overview
Battery metal caps (upper/lower ends ) are critical components ensuring secure electrical contact and leak-proof performance in AA and AAA batteries . At MouldParts.net , we produce precision-stamped metal caps using advanced cold-forming technology , delivering unmatched consistency for high-volume battery assembly lines .
Key Features & Benefits
🔋 Superior Conductivity & Durability
Materiale: Nickel-plated steel or copper alloy for optimal electrical performance . Anti-corrosion coating withstands electrolyte exposure (pH 3–12 ).
⚙️ Precision Engineering
Tight tolerance (±0.02mm ) for seamless fit with battery casings .Custom diameters : 14.5mm (AA ) / 10.5mm (AAA ) standard (other sizes available ).
🛡️ Safety Compliance
Meets IEC 60086 , UL 1642 , ERoHS standards .Burr-free edges to prevent internal short circuits .
🌍 Scalable Production
Annual capacity : 900 million units (multi-stage progressive dies ).Compatible with automated battery assembly systems .
Technical Specifications
Parameter AA Battery Caps AAA Battery Caps Materiale Nickel-plated Steel (0.2mm)Nickel-plated Steel (0.15mm)Diameter 14.5mm ±0.02mm 10.5mm ±0.02mm Surface Finish Electrolytic polishing (Ra ≤0.4μm )Mirror polish (Ra ≤0.2μm ) optional Salt Spray Test 96hrs (no red rust ) 72hrs (no red rust ) Certifications RoHS , REACH , ISO 9001RoHS , REACH , ISO 9001
Applications
Consumer Batteries : Alkaline , lithium , and rechargeable AA/AAA cells .Industrial Power Packs : Emergency lighting , IoT devices , medical equipment .Custom Solutions : Button cell caps , specialty battery terminals .
Why Choose Our Battery Caps ?
✅ Zero Defect Guarantee
100% automated optical inspection (AOI ) for dimensional accuracy .
🚚 Global Logistics
ready to ship in 3–5 days .
🔧 Customization Support
Prototype development in 7 days with DFM feedback .