Custom Pogo Pin
Smartwatch Manufacturer

Smartwatch charging should be effortless, yet many watch brands struggle with corroded ports, failed connections, and frustrated customers returning watches that won’t charge. However, the problem isn’t the watch itself. It’s the charging connector.

Promax Pogo Pin is a trusted supplier and pogo pin connector manufacturer based in Dongguan, near Shenzhen, China. We engineer spring-loaded pogo pin solutions for Apple Watch accessories, Samsung Galaxy Watch bands, Fitbit wearables, Garmin sport watches, and Huawei Watch products. Our magnetic pogo pin connectors deliver 100,000 to 1,000,000 charging cycles with IP68 waterproof ratings, solving the exact problems that drive warranty costs up for consumer electronics brands worldwide.

Why do Traditional Smartwatch Charging Ports Fail?

Traditional USB ports fail because they create holes in your watch case. These openings expose internal parts to sweat and water. Rubber covers degrade within 6–12 months, leaving contacts vulnerable to corrosion from salt, moisture, and daily wear.

Port-based charging creates three failure points. First, the opening prevents true waterproofing, most achieve only IP67 ratings (1 meter for 30 minutes). Second, insertion and removal wear down metal contacts through friction. Failure happens after just 2,000-5,000 cycles. Third, users must align the cable precisely in darkness or after workouts, causing forced insertions that damage both parts.

Spring-loaded pogo pin magnetic connectors eliminate all three problems. The connector sits flush against the watch back with no holes. This enables genuine IP68 continuous submersion ratings for swimming and diving. Spring-loaded contacts absorb movement and misalignment. Magnetic attachment provides instant “snap-to-charge” that works without looking. Lifespan extends 20–50 times beyond traditional ports.

How do Pogo Pin Connectors Work?

A pogo pin contains three parts: a spring-loaded plunger (makes electrical connection), a coiled spring (maintains pressure), and a barrel housing (guides movement). When you bring the magnetic charging cable near your smartwatch, neodymium magnets align the connector automatically. Spring force compresses the plungers against PCB contact pads, creating a low-resistance electrical pathway.

Spring Mechanism Function

The spring provides 15–60 grams of contact force based on your watch requirements. This constant pressure maintains stable electrical connection during vibration or movement. The spring compresses and extends with each connection, absorbing mechanical stress. This protects rigid contact surfaces from damage. Gold plating prevents oxidation and corrosion, ensuring reliable connection after years of sweat exposure.

Magnetic Alignment System

Neodymium magnets positioned around the connector create 200-1,200 grams of pull force. This force keeps the charging cable attached during activity but allows easy intentional removal. The magnetic field guides the cable into perfect position automatically within 2 mm approach distance. No fumbling. No precise positioning. This works in darkness, post-workout, or for elderly users.

Materials and Technical Specifications

Contact Materials

Beryllium Copper (BeCu) – Premium choice for high-reliability applications

• Conductivity: 45-50% IACS (International Annealed Copper Standard)
• Best spring properties and fatigue resistance
• Ideal for 100,000+ cycle applications

Phosphor Bronze – Cost-optimized solution

• Conductivity: 30-40% IACS
• Good corrosion resistance with gold plating
• Suitable for moderate-cycle fitness trackers

Stainless Steel 316 – Marine and extreme environments

• Exceptional corrosion resistance for dive watches
• Requires gold plating for optimal conductivity
• Best for harsh saltwater conditions

Plating and Surface Treatment

We apply 0.5-1.5 micron gold plating over nickel underplate base. Gold thickness determines lifespan. Premium tier uses 1.0-1.5µm for extended durability. Standard tier uses 0.5-0.8µm for cost optimization. Gold plating prevents oxidation and minimizes contact resistance.

Electrical Performance

Environmental Durability

Our pin waterproof pogo pin connectors operate from -40 °C to +85 °C. We validate this through thermal cycling per IEC 60068-2-14 standards. Waterproof ratings meet IP67 as standard. IP68 continuous submersion available for Garmin fenix series, Suunto dive watches, and Polar swimming watches.

Salt spray testing per ASTM B117 exposes samples to 48 hours of corrosive fog. This simulates 3+ years of sweat exposure. Zero performance degradation required for approval.

Custom Engineering and OEM Solutions

Design and Prototyping

Promax engineers every pogo pin for smartwatch applications, matching your specific geometry. We start with your CAD files (STEP or IGES format). Our R&D team models the connector matching your watch back curvature, PCB contact pad layout, and mounting space using CNC machining and precision manufacturing processes.

Pin Configuration Options:

• 2 pin pogo pin: Basic power and ground for simple charger designs
• 4 pin connector: Dual power/ground for higher current capacity
• 5 pin configurations: Power + USB data transfer
• 6-8 pin: Power + USB Type C data transmission for charging and data sync

Magnetic Force Tuning:

• 200-400g: Children’s watches, elderly users
• 400-800g: Consumer smartwatches (Apple Watch, Samsung Galaxy Watch)
• 800-1,200g: Rugged sport watches (Garmin, Suunto, Polar)

Prototype Delivery

We deliver 50-100 functional prototypes within 14 business days (guaranteed). Express 7-day delivery available. Each prototype package includes complete test probe validation and electrical testing data (resistance, current capacity).

Manufacturing Methods and Customization Options

• CNC Precision Turning – Automated pin production with ±0.01 mm tolerances using advanced technology innovation
• Electroplating – Controlled nickel and gold deposition with XRF thickness verification
• SMT Assembly – Surface mount technology for direct PCB socket attachment
• Automated Testing – 100% electrical testing with auto-reject systems

We offer full customization for OEM manufacturers including custom pogo pin designs, charging dock integration, and magnetic charging data USB-C solutions for medical equipment, industrial equipment, and wearable electronic devices.

Quality Control and Certifications

Testing Standards

Every production batch undergoes complete validation:

Electrical Testing (100% of units)

• Contact resistance measurement using test probe equipment
• Continuity verification across all pins
• High current capacity validation at rated load

Environmental Testing (sample-based)

• 1,000-10,000 cycle durability validation
• IP67/IP68 immersion testing per IEC 60529
• 48-hour salt spray per ASTM B117
• Thermal shock: -40 °C to +85 °C, 5 cycles

Quality Metrics:

• Production defect rate: 0.06% (industry average: 0.5-1.0%)
• First-pass yield: 99.4%
• Customer return rate: 0.3%

Compliance Documentation

All products ship with:

• RoHS 2.0/3.0 – Restricts lead, mercury, cadmium, and hazardous substances
• REACH SVHC – Compliance with 240+ substances of very high concern
• Halogen-Free – Bromine <900ppm, chlorine <900ppm
• Conflict Minerals Declaration – Dodd-Frank Act Section 1502 compliance
• ISO 9001:2015 – Certified quality management system

Certificate of Conformance (CoC) and material traceability reports included with every shipment. Our high-tech enterprise maintains strict quality standards for medical industry applications and solutions for global markets.

Production Capabilities and Pricing

Manufacturing Capacity

Monthly production: 2,000,000 units Lead time: 2 weeks for repeat orders Minimum order: 1,000 units initial production Location: Dongguan, Guangdong Province, China (Shenzhen region)

Pricing Structure

Prototype Packages: $2,800-$4,500

• 50-100 functional units
• Complete testing reports
• 14-day delivery guarantee

Production Tiers (per unit):

• 1,000-10,000 units: $1.80-$2.40
• 10,000-50,000 units: $1.10-$1.50
• 50,000-100,000 units: $0.90-$1.20
• 100,000+ units: $0.60-$1.00

Tooling: $8,000-$25,000 one-time (design-dependent)

Volume discounts up to 25% available for annual commitments exceeding 500,000 units.

Optional Services and System Solutions

• Cable Assembly – Pre-assembled connectors with charging data USB-C charger cable, wall adapters, or proprietary charging docks
• White-Label Branding – Laser-etched logos on connector housing for Apple Watch bands, Samsung accessories, Fitbit replacement chargers
• Extended Testing – MIL-STD-810G for rugged applications, third-party certification coordination (UL, CE, FCC)
• Specialized Applications – Loaded pogo pin for Bluetooth headphone charging, pogo pin for Bluetooth devices, and solutions for consumer electronics requiring high reliability data transmission

What Makes Promax Smartwatch Pogo Pins Different?

Dedicated Engineering Support

Every project receives a named applications engineer. No ticket systems. No call queues. Direct communication from concept through lifetime support. We respond within 2 hours during business hours.

Manufacturing Transparency

We provide real-time production updates, batch quality reports, and full material traceability. Every component traces from supplier lot numbers through production batch codes to finished goods. This enables rapid root cause analysis if issues arise.

Supply Continuity Guarantee

We commit to 5+ year component availability for your design. No surprise obsolescence. No forced redesigns. Your production schedule stays predictable as a manufacturer and supplier committed to revolutionizing precision connectors through research and development excellence.

Contact Us to Start Your Project

Promax eliminates warranty claims, enables waterproof designs, and creates effortless magnetic charging. Our high quality pogo pin connectors transform your weakest product point into your strongest selling feature.

Contact us today for a free consultation and manufacturers OEM quotes. We analyze your watch design, recommend specifications, and provide timeline and pricing within 24 hours. Contact us to discuss your pogopin charging connector needs.