Battery Contact Spring
High-consistency metal contact springs engineered for reliable electrical conduction and tactile feedback in battery compartments, suitable for alkaline batteries, lithium cells, and compact electronic device power interfaces.
Highlights
- Available in copper, stainless steel, or carbon steel with customizable plating options: nickel, silver, or localized gold plating
- Structural parameters (actuation force, travel distance, contact layout) tailored to device space constraints and functional requirements
- Integrated mold development service; first prototypes delivered within 7–10 working days
- Designed for common battery formats including AA, AAA, CR2032, and lithium pouch/cylindrical cells (e.g., 18650)
- 100% continuity testing plus salt spray sampling (48h) performed prior to shipment to ensure batch consistency
Specifications
- Common Base Materials
- C2600 brass, SUS301 stainless steel, SPCC cold-rolled steel
- Typical Thickness
- 0.1mm – 0.5mm (extendable up to 0.8mm based on structural strength requirements)
- Surface Finishes
- Ni (nickel), Ag (silver), Au (gold) localized plating; optional passivation or sandblasting
- Actuation Force Range
- 0.3N – 3.0N (precisely adjustable per travel distance and material thickness)
- Dimensional Tolerance
- ±0.05mm (applies to critical locating and contact dimensions)
- Compatible Battery Types
- AA, AAA, C, D, 9V, CR2032, lithium pouch cells, 18650, etc.
Battery contact springs are critical interconnect components in electronic device power systems, serving as conductive pathways between battery terminals (positive and negative) and PCBs. Upon battery insertion, the spring undergoes elastic deformation under compression; its central contact point stably engages the PCB pad, establishing a low-impedance current loop. Upon release, the spring automatically returns to its original position via material resilience, ensuring long-term electrical continuity stability across repeated insertions and removals.
Zhuoyi Precision’s battery contact springs are manufactured using one-step cold stamping, supporting base materials including copper (C1100/C2600), stainless steel (SUS301/SUS304), and iron (SPCC). Surface finishes include nickel plating, silver plating, or gold plating—optimized for conductivity, corrosion resistance, and solderability. Structural design balances compression travel, rebound force, and fatigue life; typical thickness ranges from 0.15–0.3 mm with tolerances controlled within ±0.03 mm.
These products are widely applied in:
• Battery-powered terminals
• Compact portable devices— Bluetooth earphone charging cases, smart wristbands, electronic dictionaries, ordering terminals, digital cameras
• Industrial and consumer electronics— Security alarm systems, LED lighting driver modules, electric toys, radios, electronic locks
Unlike generic standard parts, Zhuoyi Precision supports custom development based on customers’ actual assembly space constraints, contact pressure requirements, and service life specifications (≥5,000 insertion/removal cycles). Customization includes non-standard profiles, multi-point contact layouts, reinforcing ribs, anti-misinsertion guide slots, and other detailed optimizations. We also provide concurrent die tooling development services to ensure consistency from first-sample validation through mass production delivery.
As a precision metal stamping manufacturer specializing in electronic solution support, we have delivered customized battery contact spring projects for multiple communication module providers, IoT terminal manufacturers, and POS terminal solution vendors. Our capabilities include rapid drawing evaluation, small-batch prototyping (7–10 working days), and stable mass production capacity exceeding one million units per month.