Custom Battery Contact Springs / Contact Fingers - High Precision Stamping
Custom battery contact springs are core connection components for smart portable devices, requiring high elasticity, low resistance, and durability. Tingfeng Hardware uses advanced spring materials like beryllium copper and titanium copper, with progressive die stamping and stress relief heat treatment, ensuring stable contact force after millions of cycles. SMT and through-hole packaging are available, meeting automated assembly needs of smart products. 15 years industry experience, supporting fully customized development according to drawings.
Smart wearables and med-tech devices have stringent space and performance requirements for custom battery contact springs. Through FEA optimization of arm shape, contact force of 0.3N-1.5N is achieved within 0.5mm narrow space; multi-point contact design reduces resistance, supporting 3A continuous current. Surface options include gold or silver plating for various corrosive environments. Each spring undergoes 100% force testing, sorted by actual force ±0.1N before shipping, facilitating customer pairing. Custom design and development available based on customer specific space, current, and life requirements.
| Feature | Advantage to You |
|---|---|
| High-spring materials | BeCu, TiCu ensure force decay <15% after million cycles |
| Precision force grading | Sorted by actual force ±0.1N before shipping, facilitating precision assembly of smart devices |
| Anti-fatigue design | Stress relief and surface strengthening prevent long-term fracture |
| Full-size customization | Optimize the external form based on client space constraints to maximize internal space utilization |
| Lead-free eco process | All processes RoHS compliant, facilitating global market access |
| Specification Item | Detail / Range | Tolerance / Standard |
|---|---|---|
| Material | BeCu / TiCu / Stainless | Tensile strength ≥1200MPa |
| Thickness | 0.08 mm – 0.4 mm | ±0.005mm |
| Contact Force (working height) | 0.2 N – 2.0 N | ±15% |
| Rated Current | 1 A – 5 A | Temp rise ≤30℃ |
| Working Height Range | 0.5 mm – 2.5 mm | 50% compression |
| Life Cycle | ≥ 500,000 cycles | Resistance change ≤20% |
| Surface Plating | Gold / Silver / Tin | Thickness controlled |
| Packaging | Tape & Reel / Tube / Bulk | As required |
- Advanced Wearables: TWS earbud custom charging springs, smartwatch custom wireless charging springs, AR glasses custom battery contact fingers
- Med-Tech: Portable monitor custom battery contacts, smart bracelet custom charging springs, health monitoring device custom battery connectors
- Smart Home: Smart lock custom battery springs, smart speaker custom charging contacts, robot vacuum custom battery connection springs
- Consumer Electronics: Bluetooth earbud custom charging case springs, tablet custom battery connectors, digital camera custom battery contacts
Absolutely. This is our core expertise. We provide free DFM analysis within 3-5 days, often helping clients achieve 15-30% cost reduction through design for manufacturability.
We implement a rigorous 4-stage QC system with 100% full inspection. Our track record shows 99.99% qualification rate.
Standard lead times: 3-7 days for prototypes, 7-15 days for mass production. We offer VIP prioritization cutting lead times by up to 30%.
Yes. You get a 1v1 exclusive consultant with 1-hour initial response commitment and 24-hour technical support.
Yes. We provide material certifications and environmental test reports (RoHS, REACH compliant) upon request.
We start with mutual NDA and implement strict mold ownership protection and confidential data security measures.
We offer flexible payment terms (T/T, L/C at sight) and MOQ from 1 piece for prototyping.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.