Battery Contacts For CR2450

Huizhou Antenk Electronics Co., Ltd., an IATF16949:2016, ISO9001 and ISO14001 certified manufacturer founded in 2004 with over 250 employees and a 10,000m² facility in Shenzhen and Dongguan, proudly presents the Battery Contacts For CR2450 – a precision-engineered contact solution specifically designed for CR2450 lithium coin cells (24mm diameter, 5.0mm thickness). Unlike generic button cell contacts that use simple leaf springs, Model CR2450 features a dual-tine fork-style positive contact and a three-finger negative retaining clip, ensuring stable, low-resistance connection even under shock and vibration. Manufactured on our 11 sets of Japanese/Taiwanese high-speed stamping presses using premium phosphor bronze (C5191) with selective gold plating (0.4μm minimum) on contact interfaces, this terminal delivers ultra-low contact resistance below 30 milliohms and exceptional corrosion resistance. Key characteristics include a normal force of 50–80 grams (optimized for CR2450’s flat surfaces), support for continuous currents up to 200mA (peak 500mA), reliable operation from -40°C to +85°C, and an integrated polarization key to prevent reverse insertion. The product is RoHS, REACH compliant and UL recognized (E472792), with 100% automated optical inspection on every batch.

 

Application Scope: Model CR2450 contacts are ideal for devices powered by CR2450 batteries, including compact medical devices (glucose meters, thermometers, heart rate monitors), IoT sensors (door/window sensors, environmental loggers), wireless key fobs, active RFID tags, portable calculators, digital calipers, memory backup circuits on PC motherboards, wearable devices, and smart home controllers – markets where Antenk already supplies customers in the USA, Germany, South Korea, India, Russia, and beyond. Usage Method: Solder the contact’s SMT or through-hole tails to the PCB. For the positive contact, insert the CR2450 battery with the “+” side facing the dual-tine fork. For the negative clip, the battery slides in horizontally or snaps vertically depending on holder design. The three-finger design provides tactile feedback when battery is properly seated. Precautions: Do not exceed 200mA continuous current; avoid soldering heat near the gold-plated contact area; do not use with rechargeable batteries unless specified; operate within -40°C to +85°C range; ensure correct polarity – reverse insertion may damage the device. Advantages Over Competitors: Unlike competitors who use single-point contacts that lose connection under vibration, Antenk’s CR2450 contact uses dual-tine (positive) and three-finger (negative) designs providing redundant contact points – even if one tine loses contact, the other maintains continuity. Competitors often use tin plating that oxidizes over time, increasing resistance; Antenk uses selective gold plating (0.4μm) on contact areas for lifelong corrosion resistance. While others require 10,000+ MOQ for custom coin cell tooling, Antenk offers low MOQs (1,000 units) with no tooling fees for standard CR2450 geometry. Our IATF16949 certification ensures automotive-grade quality management. Additionally, our 48-hour salt spray testing and 20,000-cycle vibration testing guarantee superior reliability for portable and wearable applications.

 

Antenk’s vertical integration delivers consistent quality for CR2450 contacts. Process flow: (1) In-house mold design and fabrication using our 180+ precision terminal molds (dedicated coin-cell progressive tooling with 14 stations for fork and clip geometries); (2) High-speed stamping on Japanese/Taiwanese presses (11 machines) using 0.15mm–0.20mm phosphor bronze strip – thin material requires precise die clearance; (3) Selective barrel plating: nickel underplate (2μm) + gold on contact tips (0.4μm) using precision masking; (4) 100% AOI dimensional inspection with critical tolerance of ±0.05mm on tine spacing and contact height; (5) Spring force testing per EIA-364-04 for both positive and negative contacts; (6) Contact resistance testing per EIA-364-06 using CR2450 battery simulator; (7) 48-hour salt spray corrosion testing; (8) Automated assembly on 180+ machines with gold contact verification; (9) Final QC with lot traceability and full dimensional report including gold thickness measurement. Our laboratory houses 20+ testing devices including profile projectors, X-ray fluorescence (XRF) for gold thickness, environmental chambers, and low-force contact resistance testers. With 250+ employees including dedicated engineering and QA teams, 18+ mold-making machines, and 250+ plastic injection molds, we provide free samples, complete 2D/3D CAD drawings showing fork and clip geometry, and 24-hour technical support. Contact Antenk today for a quotation – we typically respond within 4 hours and ship CR2450 battery contact samples within 3 days. Ask about our volume discounts (5,000+ units) and custom options (different gold thickness, alternative materials like beryllium copper for high-reliability applications). With 70% of our products exported worldwide and 18 years of experience, Antenk is your trusted partner for coin cell battery contact solutions that deliver reliable, long-lasting performance.