• Custom battery wire harness featuring Molex Micro-Fit 3.0 4-pin plug and grey SB50 power connector.
  • High-current cable assembly with SB150 connector interfaced to Molex Micro-Fit 3.0 control plug.
  • Detail view of 2x2 pin configuration on Molex Micro-Fit connector for industrial battery systems.
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Molex Micro-Fit 3.0 4-Pin to SB50/75/150A Adapter - Custom Wire Harness

  • Hybrid Power & Signal Interface: Ingeniously pairs a compact Molex Micro-Fit 3.0mm 2x2 (4-pin) connector with heavy-duty SB Series (50A, 75A, or 150A) power connectors, facilitating seamless integration between battery packs and control units.
  • Scalable Current Handling: Available with SB50, SB75, or SB150 housing options to match specific amperage requirements, ensuring safe and efficient power delivery for EVs, forklifts, and backup power systems.
  • Reliable Mechanical Locking: The Molex Micro-Fit connector features a positive latch to prevent accidental disconnection, while the SB connectors utilize self-wiping silver-plated contacts to maintain low resistance under vibration.
  • Custom Industrial Assembly: Professionally manufactured with high-flexibility, flame-retardant cabling tailored to OEM specifications, including custom wire lengths and gauge sizing (AWG) for optimized voltage stability.
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We specialize in custom sourcing and manufacturing. Upload your spec sheet or drawing, and our engineering team will provide a quote within 24 hours.

Manufacturing of unlisted custom assemblies
Support for complex cable & wire harness assemblies
Rapid prototyping for new designs
Equivalent alternatives for obsolete parts
Same-day engineering review
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What information do you need to provide a quote for a custom wire harness?

To provide an accurate quote and lead time, please provide:

  1. Technical Drawing or Diagram: Showing pinouts, lengths, and tolerances.
  2. Bill of Materials (BOM): Listing specific connectors (MPN) and wire gauges (AWG).
  3. Estimated Annual Usage (EAU): Helping us optimize pricing for your volume. Note: If you do not have a formal drawing, our engineering team can help create one based on your physical sample.
Can you suggest cost-saving alternatives for expensive connectors (e.g., TE, Molex, JST)?

Yes. We offer variety of alternative components.

We have extensive supply chain relationships in Taiwan and can suggest"Functionally Equivalent"alternatives that are fully compatible with major brands like TE, Molex, or JST but at a significantly lower cost. We will provide datasheets and samples of the alternative components for your approval before production.

How do you ensure quality control for custom cable assemblies?

Every single cable assembly undergoes rigorous testing before leaving our Taiwan facility. Our standard QC process includes:

  • 100% Continuity Testing: Ensuring no opens, shorts, or miswires.
  • Pull Force Testing: Verifying crimp strength.
  • Visual Inspection: Checking for cosmetic defects and label accuracy.
  • Hi-Pot Testing: Available upon request for high-voltage applications to ensure insulation integrity.