Heavy-Duty Battery-to-DC/DC Charger Cable Kit – Secure Power for Vehicle & Marine Systems

Ensure Reliable Auxiliary Battery Charging with Professionally Engineered Cables.

This complete cable kit delivers robust, low-resistance power from your starter battery to your DC/DC charger, maximizing charging efficiency for your auxiliary battery bank (LiFePO4, AGM, Gel). Engineered for safety and performance in 12V and 24V systems.

Key Features & Benefits

• Optimal Charger Performance: Correctly sized cables minimize voltage drop, ensuring your DC/DC charger receives the input voltage it needs to deliver full output current to your auxiliary battery.

• Full System Safety: Includes an essential MIDI fuse and holder for the starter battery connection, protecting against short circuits and wiring faults. Heat-shrink sealed, tinned copper lugs resist corrosion.

• Vehicle-Grade Durability: Cables feature fine-strand tinned pure copper wire for maximum flexibility and vibration resistance. Abrasion-resistant double PVC insulation stands up to engine bay temperatures and harsh environments.

Technical Specifications

• Conductor: Fine-Strand Tinned Pure Copper (Oxygen-Free, OFC) – Superior conductivity and fatigue resistance vs. CCA (Copper-Clad Aluminum).

• Terminations: High-quality, tinned copper lugs with adhesive-lined heat-shrink tubing for a waterproof, corrosion-resistant seal.

• Fuse Protection: In-line fuse holder with 70A MIDI fuse (standard). Other fuse ratings available (e.g., 60A, 100A). Fuse must be sized per your DC/DC charger's maximum INPUT current.

Sizing Guide: Choose Your Kit

Select based on your DC/DC charger's MAXIMUM INPUT CURRENT and TOTAL CABLE RUN LENGTH (Positive + Negative path).

*For longer runs, you MUST size up in cable gauge to control voltage drop.

What's in the Box?

• 1 x Pre-terminated Twin Sheath 16mm2 Cable (with fuse holder installed)

• 1 x In-line Fuse Holder (MIDI)

• 1 x Fuse (70A MIDI)

• 2 x 16mm² x 8mm (supplied loose)

• 2 x 16mm² x 6mm (supplied loose)
  

(All components come securely packed in a re-sealable parts bag.)

Why Professional Cables Matter for DC/DC Chargers

A DC/DC charger is only as good as its power supply. Undersized or poor-quality battery cables cause:

• Reduced Charging Current: Excessive voltage drop tricks the charger into thinking the starter battery is low, throttling its output.

• Overheating & Fire Risk: Cables can overheat under continuous load, melting insulation.

• Charger Faults & Errors: Low input voltage can cause modern chargers to fault or shut down unexpectedly.

• Accelerated Corrosion: Non-tinned lugs in engine bays corrode quickly, increasing resistance over time.

This kit eliminates these risks with engineered, fit-for-purpose components.

Compatible With: Victron Orion, Redarc, Renogy, Kisae, Sterling Power, CTEK, Enerdrive, Projecta and other major DC/DC charger brands.

⚠️ CRITICAL INSTALLATION NOTE

This is a component kit. Installation requires electrical knowledge.

• FUSE MUST be installed within 30cm (12") of the starter battery's positive terminal.

• Always disconnect the starter battery before beginning work.

• Route cables away from sharp edges, heat sources, and moving parts.

• Always follow your DC/DC charger manufacturer's installation guide for final wiring specifications and safety instructions.