Fengrun Hardware China is a professional manufacturer integrating R&D, stamping, processing and customization of button battery springs. We focus on providing high-precision, stable and well-fitted custom solutions for button battery conductive springs to customers across smart electronics, home appliances, digital products, security equipment, medical electronics, automotive electronics and other industries. With years of experience in precision hardware processing, mature production processes, complete quality control systems and flexible customization capabilities, we have become a long-term supplier for many domestic and international brands and OEM manufacturers. Our factory direct supply helps customers cut costs and upgrade product quality.

Fengrun Hardware produces standard and non-standard custom button battery springs, compatible with mainstream button battery models on the market. Our products feature strong adaptability to meet power contact requirements of various devices. Our main products include positive and negative springs for common button batteries such as CR2032, CR2025, CR2016, CR2450 and CR2430. We also custom-make special-shaped, ultra-thin, high-elasticity and high-current battery springs.
Our products are widely used in remote controls, smart bracelets, Bluetooth earphones, thermometers, sensors, vehicle meters, security alarms, small smart home appliances, portable electronic devices and more. They deliver excellent conductivity, durable elasticity, stable contact, strong oxidation resistance and anti-loosening performance, effectively solving common failures like poor contact, sudden power cut and device malfunction caused by spring defects.
As an original custom factory, Fengrun Hardware breaks the limitations of mass standard production. We provide one-on-one exclusive customization services based on customer drawings, samples, dimensional parameters and application scenarios, supporting OEM & ODM cooperation to satisfy differentiated, niche and high-precision production demands.
Customizable items include spring shape & structure, thickness, elasticity coefficient, working current, mounting method (SMT patch, DIP through-hole, welding, snap-fit), surface treatment and material selection. We support small-batch sampling, pilot production and mass production. Fast sampling service is available for customers developing new products to shorten time-to-market, while stable continuous supply is guaranteed for mass orders.
Product quality starts with raw materials. Fengrun Hardware strictly selects high-grade raw materials, mainly phosphor bronze, stainless steel, manganese steel and brass. Different materials are matched according to application scenarios:
Phosphor bronze: good conductivity, stable elasticity and fatigue resistance, ideal for regular precision electronics.
Stainless steel: anti-oxidation, corrosion-resistant and tough, suitable for humid, automotive and other harsh environments.
Manganese steel: long-lasting elasticity to maintain stable contact pressure for extended service life.
We also offer diverse surface treatments including gold plating, silver plating, nickel plating, zinc plating and anti-oxidation coating. These treatments improve conductivity, oxidation resistance, corrosion resistance and wear resistance, ensuring stable operation of electronic equipment under high & low temperature, humid and frequent vibration conditions.
Our factory is equipped with complete precision stamping equipment, CNC forming machines, automatic riveting lines and precision testing instruments. Adopting refined stamping and one-piece forming, bridge riveting and other advanced processes instead of traditional rough processing, we effectively avoid spring deformation, uneven elasticity and poor contact. The flatness, accuracy and consistency of our products exceed industry standards.
Automatic production lines enable high-efficiency mass production with sufficient daily output, quickly responding to urgent and bulk orders. Streamlined workflows reduce labor costs, so customers get cost-effective factory-direct products without middleman markup. Every procedure, from raw material incoming inspection, precision processing, forming test, surface treatment to finished packaging and delivery, is strictly controlled to prevent defective products from shipment.
Fengrun Hardware implements a full-process refined quality control system. Each batch of products undergoes rigorous sampling and full inspection. Key tested indicators include dimensional tolerance, elasticity stability, conductivity, wear resistance, fatigue resistance and anti-oxidation performance, to ensure accurate dimension, uniform elasticity, stable conductivity and qualified service life.
With rich experience in precision hardware spring manufacturing, we master processing details of various high-precision and complex special-shaped springs. We solve common industry pain points such as spring loosening, poor contact, fatigue failure, oxidation and large tolerance deviation. Our high product pass rate helps customers improve end-product quality and market reputation.
Factory Direct Supply: Own workshop and complete production equipment, no middlemen. Competitive pricing, short lead time and flexible order support.
Powerful Customization: Standard parts available in stock, non-standard parts customizable. Free structural optimization suggestions, drawing review and sample service.
Stable & Reliable Quality: Full-process strict QC, genuine materials and sophisticated craftsmanship. Products suitable for high-end precision electronics with long-term stable supply.
Comprehensive After-sales Service: Professional technical team for full support. Prompt response for inquiries, customization and after-sales issues, tracking order production and delivery to ensure worry-free cooperation.
Upholding the business philosophy of Precision Quality, On-demand Customization, Efficient Delivery, Win-Win Integrity, Fengrun Hardware China keeps focusing on button battery spring manufacturing. We continuously optimize production processes and service systems to supply high-quality, cost-effective precision battery spring custom processing services for global electronics enterprises. Customers are welcome to contact us, visit our factory and cooperate on sampling!