DIY Install Your Own Toyota LandCruiser 300 Series Dual Battery System

The Ultimate 300 Series LandCruiser Under Bonnet Dual Battery Kit for Touring, Towing & Off-Grid Adventures

If you've been researching Toyota LandCruiser 300 Series dual battery systems, you've probably noticed there's no shortage of options on the market. The problem is that many kits are little more than a battery tray and a few generic components, leaving you to source additional parts, work out the wiring, organise a rear power solution and spend hours figuring out how everything goes together.

At Accelerate Off-Grid Touring, we wanted to build something better.

Our LC300 Under Bonnet Dual Battery Kits have been designed as a complete, vehicle-specific solution that takes the guesswork out of upgrading your LandCruiser. Rather than supplying a collection of universal parts, we've developed a system that integrates seamlessly into the 300 Series and looks like it could have come from the factory.

Every kit features premium powder-coated black metal work and outlet components, purpose-built for the LC300 engine bay. Our vehicle-specific wiring harnesses are pre-configured and cut to length, eliminating the need to measure, modify or guess where cables need to run. The result is a cleaner installation, less installation time and a professional finish.

Unlike many other dual battery kits, we don't stop at the under-bonnet components. We also provide rear socket bank options and the wiring required to complete the installation, allowing you to power fridges, camp lighting, compressors, Starlink systems and other accessories exactly where you need them.

Another key difference is flexibility. Every touring setup is different, which is why we've designed our system to be fully configurable. Choose your preferred battery size, REDARC charger, socket bank layout and additional accessories to create a system tailored to your specific touring, towing and off-grid power requirements.

And if you don't need a complete kit, that's no problem either. All major components are available separately, allowing you to build your own system, upgrade an existing setup or purchase individual parts as required.

Whether you're installing a complete dual battery system or simply upgrading specific components, our LC300 range delivers a factory-style appearance, premium components, straightforward DIY installation and a level of integration that's difficult to find anywhere else.

Designed Specifically for DIY Installation

Unlike many dual battery systems on the market, our kits aren't designed exclusively for workshops.

We've spent countless hours developing a straightforward installation process that allows DIY installers to achieve a clean, factory-style result.

Every kit includes:

• Comprehensive PDF Installation Instructions
• Full step-by-step Installation Video
• Vehicle-specific mounting hardware
• Professionally designed wiring solutions
• Australian technical support - Accelerate Tech Support

The result is an installation process that is simple, logical and easy to follow.

Whether you're mechanically minded or tackling your first touring upgrade, our guides walk you through every stage of the installation.

Full Installation Videos Included

One of the biggest challenges with DIY electrical upgrades is uncertainty.

That's why every LC300 dual battery kit includes access to detailed installation videos covering:

• Battery tray installation
• Charger mounting
• Wiring and cable routing
• Rear socket bank installation
• Electrical connections
• System setup and testing

You'll be able to follow along step-by-step and install your system with confidence.

Comprehensive PDF Instructions

Alongside our installation videos, you'll also receive detailed PDF instructions covering:

• Component identification
• Tool requirements
• Wiring diagrams
• Installation procedures
• Troubleshooting information

Many customers choose to use the PDF guide alongside the videos for an even smoother installation experience.

Installation Instructions

Australia's Best Technical Support

Even with detailed instructions and videos, sometimes it's reassuring to speak with someone who knows the product inside and out.

That's why we've built a reputation for providing industry-leading technical support.

When you purchase a dual battery kit from Accelerate Off-Grid Touring, you're backed by a team that's available to help with:

• Installation questions
• Product setup
• Wiring advice
• Troubleshooting
• Future upgrades

If you get stuck, we're only a phone call away.

Accelerate Tech Support

Australia-Wide Shipping

Whether you're located in Brisbane, Sydney, Melbourne, Perth, Adelaide, Darwin, Hobart or a remote regional town, we can get your kit to you.

We proudly ship our Toyota LandCruiser 300 Series Dual Battery Kits Australia-wide, allowing LandCruiser owners across the country to upgrade their touring setup without leaving home.

Two 300 Series Dual Battery Options Available

300 Series Under Bonnet Dual Battery Kit

Our standard dual battery kit provides everything needed to add a reliable auxiliary battery system to your LandCruiser 300 Series.

Perfect for powering:

• Fridges and freezers
• Camp lighting
• Air compressors
• Caravan charging
• Portable solar systems
• Inverters
• Starlink systems

300 Under Bonnet Dual Battery Kit with Jump Start Feature

For customers wanting even more capability, our Jump Start version includes all the benefits of the standard kit plus additional start battery charging and management functionality.

Ideal for:

• Extended remote travel
• Caravan towing
• Long-term off-grid camping
• Customers wanting maximum battery system flexibility

Configuration Options

One of the biggest advantages of our Toyota LandCruiser 300 Series Under Bonnet Dual Battery Kits is the ability to configure the system to suit your exact touring, camping and off-grid power requirements.

Whether you're looking for a simple fridge setup or a complete power management solution for extended remote travel, caravan towing and Starlink use, you can customise your kit with a range of battery, charger and socket bank options.

Battery Options

No Battery

Already have a battery or a preferred brand? No problem.

Select the No Battery option and supply your own battery during installation.

Internal Battery Space Dimensions

Up to approximately:

• 308mm (L)
• 168mm (W)
• 220mm (H)

Invicta Xero 100Ah Lithium Battery (SNLX12V100BT)

A high-performance lithium battery designed for demanding touring and off-road applications.

Features:

• Advanced Battery Management System (BMS)
• Bluetooth monitoring via the Invicta App
• Rugged IP67-rated construction
• 3-Year Under Bonnet Warranty

Ideal for:

• Fridges and freezers
• Camp lighting
• Weekend camping
• Moderate power consumption

Invicta Xero 120Ah Lithium Battery (SNLX12V120BT)

For customers wanting increased capacity and longer off-grid runtimes.

Features:

• Advanced Battery Management System (BMS)
• CAN Bus Communication
• Bluetooth Monitoring
• IP67-rated construction
• 3-Year Under Bonnet Warranty

Perfect for:

• Extended touring
• Caravan charging
• Starlink systems
• Inverters and higher power loads

Invicta Xero Range Benefits

Both Invicta Xero batteries offer:

• High Performance BMS – Supports up to 500A pulse and 150A continuous discharge
• Long Cycle Life – 3000+ cycles at 100% depth of discharge
• CAN Bus Communication – Direct integration with compatible system components
• Bluetooth Monitoring – Live battery data through the Invicta App
• IP67 Protection – Water and dust resistant for harsh Australian conditions
• Rugged Construction – Reinforced casing and vibration-resistant design
• Advanced Safety Features – Built-in active and passive protection systems
• Warranty - 3 Year Warranty when installed under bonnet in a 300 Series LandCruiser using our dual battery kit

Charger Options

REDARC Classic 25A (BCDC1225D)

A reliable, proven DC-DC charger ideal for small-to-medium battery systems and everyday touring setups.

Features:

• Dual input charging (solar + alternator)
• Built-in MPPT solar regulator
• Smart alternator compatible
• Suitable for AGM and lithium batteries
• Compact and robust design

REDARC Classic 40A (BCDC1240D)

Designed for larger battery banks and higher power demands, providing faster charging and improved recovery times.

Features:

• Higher charging output
• Dual input charging
• Built-in MPPT solar regulator
• Smart alternator compatible
• Suitable for larger lithium battery systems

REDARC Alpha 25A (BCDC12025B)

The perfect solution for small-to-medium battery systems requiring reliable charging from both solar and alternator sources.

Features:

• Smart alternator compatible
• Dual input charging (solar + alternator)
• Bluetooth monitoring and control
• Compact design
• Suitable for most touring setups

REDARC Alpha 50A (BCDC12050B)

Designed for larger battery banks and higher power demands, delivering faster charging and advanced system management.

Features:

• Faster charging capability
• Ideal for larger lithium battery systems
• Bluetooth monitoring and control
• Dual input charging
• Advanced charging algorithms

REDARC Alpha Series Benefits

Both Alpha chargers include:

• Start Battery Charging Support – Charge and manage your start battery via the Bluetooth app
• Start Battery Maintenance – Helps maintain battery health while parked
• Green Power Priority™ – Prioritises solar power to reduce alternator load
• Adjustable Input Current Limit – Ideal for modern smart alternator vehicles
• Dual Input Charging – Simultaneously charge from solar and alternator sources
• Bluetooth Monitoring – Full visibility through the RedVision App
• IP67 & IP69K Rated – Built for harsh off-road and marine environments
• Over-The-Air Updates – Wireless firmware upgrades for future enhancements

Socket Bank Options

Every kit includes your choice of a Passenger-Side Rear Socket Bank, allowing convenient access to power inside your LandCruiser 300 Series.

Socket Bank 1

• 1 x USB A/C
• 1 x 12V Socket
• 2 x Grey Anderson Outputs

Socket Bank 2

• 2 x Dual USB A/C
• 2 x Grey Anderson Outputs

Socket Bank 3

• 1 x USB A/C
• 1 x Engel Fridge Socket
• 2 x Grey Anderson Outputs

Note: Socket banks are supplied for passenger-side installation only.

If you require a driver-side socket solution, simply add our Driver-Side Add-On Socket with Y-Lead Bundle to your order.

Don't Need a Complete Kit?

No worries.

If you don't need a complete dual battery kit, you can purchase many of the components individually and build your own custom setup.

Available individual components include:

• Battery Tray - 300 Series - Under Bonnet
• DCDC Charger Tray - 300 Series - Under Bonnet
• Socket Bank - 300 Series LandCruiser - Rear Cup Holder
• Socket Wiring Harness – Passenger-Side to Under-Bonnet Dual Battery System
• Dual Socket Y Lead

This gives you the flexibility to upgrade your LandCruiser at your own pace while still using the same premium components found in our complete kits.

Why Choose Accelerate Off-Grid Touring?

✔ Designed specifically for the Toyota LandCruiser 300 Series

✔ DIY-friendly installation

✔ Full installation video guides included

✔ Comprehensive PDF instructions included

✔ Australian-based technical support

✔ Australia-wide shipping

✔ Premium lithium battery options

✔ REDARC Alpha charger compatibility

✔ Factory-style under-bonnet installation

✔ Ideal for touring, camping and caravan towing

Why LC300 Owners Choose Accelerate Off-Grid Touring

With hundreds of 5-star reviews, Accelerate Off-Grid Touring has become one of Australia's most trusted names in LC300 dual battery systems.

Our customers choose us because we provide more than just a battery tray and a few parts. Every kit is designed specifically for the Toyota LandCruiser 300 Series and includes vehicle-specific wiring, rear power solutions, detailed installation videos, PDF instructions and access to our dedicated technical support team.

Still not convinced? Jump into any of the major Toyota LandCruiser 300 Series Facebook groups and see who gets recommended the most when people ask about dual battery systems. You'll quickly find that Accelerate Off-Grid Touring is a name that comes up time and time again.

That's because our kits are designed by tourers, for tourers, and backed by real-world experience, premium components and proven customer support.

Whether you're heading around Australia, towing a caravan, running Starlink or simply powering a fridge on weekend trips, our LC300 Dual Battery Kits are built to get you there with confidence.

Ready to Upgrade Your LC300?

If you're searching for the best Toyota LandCruiser 300 Series dual battery kit, LC300 under bonnet dual battery system, 300 Series lithium battery upgrade, or a DIY dual battery kit with installation support, our system delivers everything you need.

No expensive workshop bills.

No complicated fabrication.

No guessing.

Just a professionally engineered solution backed by detailed instructions, installation videos, expert technical support and Australia-wide shipping.

Install it yourself. Power your adventures. Travel further with confidence.