Battery Contact Spring
High-consistency metal contact springs engineered for reliable electrical conduction and tactile feedback in battery compartments, suitable for dry cells, lithium batteries, and power interfaces of compact electronic devices.
Highlights
- Available in H-series and custom thicknesses (0.1–0.8 mm); adjustable return force range: 0.15 N to 3.5 N
- Compatible with SMT assembly and post-soldering processes; value-added options include adhesive backing, pre-bending, and lead forming
- Serving over 80 electronics solution providers; long-term yield stability exceeding 99.6%
Specifications
- Common Materials
- SPCC, SUS301, C2680, C5191
- Typical Thicknesses
- 0.15 mm / 0.2 mm / 0.3 mm / 0.5 mm
- Surface Finishes
- Nickel plating, tin plating, silver plating, selective gold plating, electroless nickel
- Compatible Battery Types
- AA / AAA / C / D / LR44 / CR2032 / Polymer Lithium-ion / Cylindrical Lithium-ion
- Testing Standards
- GB/T 2828.1, IEC 60512, Internal Reliability Test Specification for Battery Contact Springs
Battery Contact Spring: Stable Conduction · Precise Rebound · Batch Reliability
Battery contact springs are critical structural components in electronic devices’ power systems, providing both mechanical contact and electrical conduction between battery terminals (positive/negative) and PCBs. Based on years of precision stamping expertise, Zhuoyi Precision custom-manufactures high-reliability battery contact springs for customers in communications modules, POS terminals, industrial control devices, smart toys, and portable instruments—balancing conductivity, elastic service life, assembly compatibility, and mass-production consistency.
Core Design & Process Features
- Material Options: Commonly used materials include SPCC, SUS301, C2680 (phosphor bronze), and C5191 (beryllium copper), selected to balance electrical conductivity, yield strength, and bend formability;
- Surface Finishes: Nickel, tin, silver, or selective gold plating available to meet corrosion resistance and low contact resistance requirements across diverse environments;
Precision Stamping Forming
: High-precision continuous or single-station cold stamping; dimensional tolerance controlled to ±0.05 mm, ensuring stable spring force curves and precise contact point positioning;
Flexible Structural Adaptation
: Supports straight-arm, L-shaped, U-shaped, locating-foot, and weld-protrusion configurations—adapting to varied battery compartment layouts and mounting methods.
Typical Application Scenarios
Widely used in battery-powered modules of the following equipment:
- Consumer Electronics: Remote controls, electronic dictionaries, calculators, LED lighting, plush/electric toys, radios, digital cameras;
IoT & Module Devices: NB-IoT module battery interfaces, LoRa terminal power compartments, compact sensor node power structures; Compatible battery types include AA (No. 5), AAA (No. 7), C (No. 2), D (No. 1), LR44, CR2032, and various polymer/cylindrical lithium battery packaging interfaces.
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Why Choose Zhuoyi Precision Custom Battery Contact Springs?
Unlike standard-component suppliers, we deliver end-to-end services tailored for electronics solution companies:Structural feasibility assessment → Concurrent mold development → Small-batch validation → Stable mass production:
- ✅ No-drawing requirement conversion: Rapid structural proposals and DFM reports generated from samples, functional descriptions, or 3D sketches;
- ✅ In-house mold development: Mold workshop equipped with 60+ precision stamping presses; first trial mold completed in as fast as 12 days;
- ✅ Full-process quality control: Spring force testing (load-displacement curve), salt spray testing (≥48 h), insertion/extraction cycle testing (≥5,000 cycles), contact resistance measurement (≤50 mΩ);
- ✅ Flexible small-batch delivery: Production scheduling adaptable to batch sizes of 500–50,000 pcs, supporting rapid iteration across multiple product versions.
Submit your battery contact spring drawings or specifications