Copper Cable Lugs 6mm²–120mm² – Battery & Inverter Crimp Lugs

Razorback DC Cable Lugs 6mm²–120mm² – Copper Battery Lugs | 6-6 to 120-10 Range

Create strong, low-resistance battery and power connections with the Razorback DC Copper Cable Lug Range, available for cable sizes from 6mm² through to 120mm².

Designed for demanding automotive and DC electrical installations, these heavy-duty copper battery lugs are ideal for terminating battery cable, inverter cable, starter cable, earth cable and other high-current wiring.

With multiple cable and stud-hole combinations available, you can select the lug that matches both your cable conductor size and your terminal stud diameter.

Whether you're building a 4WD dual-battery system, wiring an inverter, installing a lithium battery bank or completing a caravan electrical upgrade, Razorback DC cable lugs provide a clean and professional termination solution.

⭐ Key Benefits

• Heavy-duty copper cable lugs
• Suitable for cable sizes from 6mm² to 120mm²
• Multiple stud-hole sizes available
• Designed for battery and high-current DC cable
• Excellent for crimped electrical terminations
• Suitable for lithium and AGM battery systems
• Ideal for inverter wiring
• Great for starter and earth cables
• Suitable for bus bars and fuse holders
• Ideal for battery isolators and distribution systems
• Suitable for 12V and 24V electrical systems
• Excellent for 4WD, caravan, marine and off-grid applications
• Wide range of cable-size and lug-hole combinations

🔩 Available from 6mm² to 120mm²

The Razorback DC cable lug range covers a broad selection of cable sizes, making it suitable for everything from smaller accessory wiring through to large high-current battery and inverter cable.

Available cable sizes extend from approximately:

6mm² through to 120mm²

As a result, the same lug range can be used across many different types of electrical installations.

Typical applications include:

• Auxiliary battery wiring
• Starter cables
• Earth cables
• Inverter installations
• Battery-bank connections
• DC-DC charger wiring
• Solar battery systems
• Bus bar connections
• Fuse holder connections
• Battery isolation systems

🔢 Understanding Cable Lug Sizes

Cable lug sizes are commonly written using two numbers.

For example:

35-8

The first number refers to the approximate cable conductor size in mm².

The second number refers to the approximate stud-hole diameter in millimetres.

Therefore:

• 6-6 = 6mm² cable with 6mm stud hole
• 35-8 = 35mm² cable with 8mm stud hole
• 70-10 = 70mm² cable with 10mm stud hole
• 120-10 = 120mm² cable with 10mm stud hole

Consequently, choosing the correct lug requires matching both the cable size and the terminal stud size.

⚡ Designed for High-Current Battery Connections

Battery and inverter cables can carry substantial electrical current.

Therefore, the quality of the cable termination is extremely important.

A correctly selected and crimped copper cable lug helps provide:

• Low electrical resistance
• Strong mechanical connection
• Reliable current transfer
• Reduced voltage drop at the terminal
• Improved connection reliability
• Professional cable termination

Poorly sized or incorrectly crimped lugs, by comparison, can lead to resistance, heat and unreliable electrical performance.

🔋 Ideal for Battery Cable

The Razorback DC lug range is ideal for terminating cables connected to:

• Lithium batteries
• AGM batteries
• Gel batteries
• Starting batteries
• Auxiliary batteries
• Battery banks

Depending on your installation, cable lugs may connect directly to battery terminals or to other components within the electrical system.

🔌 Perfect for Inverter Wiring

High-power inverters require large battery cables and secure electrical connections.

For this reason, quality cable lugs are essential when connecting:

• Battery to inverter
• Battery to fuse holder
• Battery to bus bar
• Bus bar to inverter
• Battery bank interconnects

Additionally, the correct stud-hole size ensures the lug fits properly onto the inverter, fuse holder or bus bar terminal.

🚙 4WD & Dual-Battery Applications

Razorback DC Copper Cable Lugs are ideal for 4WD and ute canopy electrical installations.

Use them for:

• Auxiliary battery cables
• DC-DC charger wiring
• Anderson connector leads
• Battery isolators
• Bus bars
• Fuse holders
• Earth connections
• Inverter cables
• Canopy electrical systems

Because multiple cable and hole sizes are available, installers can maintain consistent professional terminations throughout the entire vehicle electrical system.

🏕️ Caravan & Camper Electrical Systems

Caravans and camper trailers often contain several high-current DC components.

Suitable applications include:

• Lithium battery banks
• AGM battery systems
• Solar controllers
• DC-DC chargers
• Inverters
• Battery chargers
• Bus bars
• Fuse boxes
• Power distribution equipment

Therefore, carrying several commonly used lug sizes can be extremely useful when building or servicing caravan electrical systems.

☀️ Solar & Off-Grid Power Systems

Copper cable lugs are also essential components in larger solar and off-grid battery systems.

Typical connections include:

• Battery to bus bar
• Battery to inverter
• Battery to fuse
• Battery bank linking cables
• MPPT controller connections
• DC distribution systems
• Battery isolation equipment

For high-current systems, always select cable and lug sizes according to the maximum current and installation requirements.

🔩 Multiple Stud Hole Sizes

Different electrical components use different terminal stud sizes.

Common equipment may use:

• M6 studs
• M8 studs
• M10 studs
• Other compatible terminal sizes

Therefore, selecting the correct lug-hole diameter is just as important as selecting the correct cable size.

A lug hole that is too small will not fit the terminal, while a hole that is excessively large may reduce the quality of the mechanical connection.

🛠️ Designed for Crimp Termination

These cable lugs are designed to be crimped onto the cable conductor using an appropriate lug crimping tool.

For best results:

1. Select the correct lug for the cable size.
2. Strip the cable insulation without damaging the copper strands.
3. Insert the conductor fully into the lug barrel.
4. Crimp using a suitable cable-lug crimping tool.
5. Inspect the crimp for a secure mechanical connection.
6. Add heat shrink where required.
7. Secure the lug to the electrical terminal.

A properly executed crimp provides both electrical conductivity and mechanical strength.

🔥 Add Heat Shrink for a Professional Finish

After crimping, suitable heat shrink can be applied over the cable and lug barrel.

This helps provide:

• Additional insulation
• Cable strain relief
• Protection around the termination
• Positive and negative identification
• Cleaner professional appearance

For battery systems, red and black heat shrink can also make polarity easier to identify.

🔧 Correct Lug Selection Matters

Always choose a lug based on:

• Cable conductor size
• Terminal stud diameter
• Maximum circuit current
• Equipment requirements
• Installation environment

For example, a cable may physically fit into a larger lug barrel; however, that does not mean the connection will crimp correctly.

Therefore, always match the lug to the actual cable conductor size.

⚠️ Cable Size vs B&S Size

Australian battery cable is often described using both mm² conductor area and B&S / AWG terminology.

These measurements are not always exact one-to-one equivalents.

Consequently, when selecting a cable lug, use the actual conductor cross-sectional area in mm² wherever possible.

This provides the best chance of selecting a correctly matched lug barrel.

🔍 Product Features

• Razorback DC copper cable lug range
• Cable sizes from 6mm² to 120mm²
• Multiple terminal-hole sizes
• Heavy-duty copper construction
• Designed for crimp termination
• Suitable for battery cable
• Suitable for inverter cable
• Ideal for starter and earth cable
• Excellent for bus bar connections
• Suitable for fuse holder connections
• Ideal for battery banks
• Suitable for lithium and AGM systems
• Great for 4WD, caravan and marine use
• Suitable for 12V and 24V systems

• 📦 What's Included

  1 × Razorback DC Copper Cable Lug in your selected cable and stud-hole size

  Select the variation that matches:

  1. Your cable conductor size

  and

  2. Your required terminal stud-hole diameter

  ⚠️ Important Sizing Note

  Before ordering, confirm both the cable size and terminal stud diameter required for your installation.

  For example:

  70-10 = 70mm² cable lug with 10mm terminal hole

  If you are unsure, measure the cable conductor size and the diameter of the stud the lug will be connected to before selecting your variation.