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Accelerate Off-Grid Touring DIY Kits No Battery / RedArc Classic (25A) - Solar Through Grille / Socket Bank 1 Dual Battery - LC300 Series - Under Bonnet

Dual Battery - 300 Series LandCruiser - Under Bonnet

SKU 300/1225/SB1/NB

Under-bonnet dual battery system for the Toyota LandCruiser 300 Series with lithium battery, REDARC charger and a socket bank that fits in your rear cupholder.
Keep your 300 looking factory whilst ready for off-grid adventures!
$2,187.00 - $3,696.00
$2,187.00
$2,187.00 - $3,696.00
$2,187.00

Designed for:

300 Series LandCruiser - 2022 to Current

Description

This isn’t just another battery tray and a collection of wiring—it’s one of the most comprehensive DIY dual battery kits available for the Toyota LandCruiser 300 Series. Every major component has been purpose-designed, tested, pre-mounted, pre-wired, fused, labelled and terminated by our experienced auto electricians, giving you a complete vehicle-specific power system that installs neatly under the bonnet without sacrificing any interior or cargo space. At the heart of the system is your choice of a proven REDARC Classic 25A or 40A BCDC charger, providing intelligent alternator charging, built-in MPPT solar regulation and Green Power Priority™ to keep your auxiliary battery charged efficiently wherever you travel. The kit also includes our custom Australian-made aluminium battery tray and DCDC bracket, a heavy-duty 6 B&S vehicle-specific charge harness, your choice of Invicta Xero under-bonnet lithium battery, an integrated solar input and a passenger-side rear socket bank for conveniently powering your fridge and 12V accessories. There’s no need to source individual components, fabricate brackets, calculate cable sizes or build a wiring system from scratch—everything has been carefully engineered to fit the LC300 and work together as one complete package. Designed, manufactured and assembled by Accelerate on the Sunshine Coast, this premium system delivers the clean finish, proven reliability and performance of a professionally installed auto-electrical system in a genuinely DIY-friendly kit, making it the ultimate power upgrade for LC300 owners who want a dependable setup for touring, towing and off-grid travel.

Key Features

Under-bonnet install – Keeps your interior and cargo space free for gear, passengers, and storage.

Retains Factory Plastic Battery Cover - fits back on over the dual & start battery

Pre-wired components – Delivered as a true plug & play system for a fast, hassle-free installation.

Vehicle-specific charge harness – Designed specifically for the LC300 for perfect fitment with no cutting or splicing.

Heavy-duty 6 B&S cabling – Ensures efficient charging of lithium dual battery systems while you drive, covered in self-winding sheathing.

Custom battery tray & BCDC bracket – Laser-cut aluminium, powder-coated matte black for durability and a clean look.

Designed and built by Accelerate – Proudly engineered and tested on the Sunshine Coast for Australian touring conditions.

What’s Included

  • Custom laser-cut aluminium battery tray (under-bonnet installation)
  • Custom laser-cut aluminium BCDC bracket
  • REDARC Classic BCDC charger (25A or 40A – pre-mounted on BCDC Bracket)
  • Choice of solar input (through grille or under bonnet)
  • Invicta lithium battery (if selected)
  • Vehicle-specific charge harness pre-wired and pre-terminated 
  • Accelerate socket bank of your choice (rear cupholder mount)
  • All mounting hardware

Solar Input Options (Important for GR Sport Owners)
This system includes a RED Anderson solar input plug mounted on the front of the BCDC bracket for easy solar connection on standard 300 Series grilles.

If you have a GR Sport with the honeycomb grille, the front-mounted solar plug cannot be used due to grille clearance issues.
Instead, we will supply a dedicated under-bonnet solar mounting bracket so you can still run portable solar panels safely and cleanly.

Battery Options

No Battery – Internal battery space allows you to supply and install your own battery,  only suits lithium batteries. 

Internal Battery Space – Sized to suit batteries up to approx. 308mm (L) x 168mm (W) x 220mm (H)

Invicta Xero 100Ah (SNLX12V100BT) – High-performance lithium battery with advanced BMS, Bluetooth monitoring and rugged IP67 design, backed by a 3-year under bonnet warranty.

Invicta Xero 120Ah (SNLX12V120BT) – Increased capacity lithium battery ideal for higher power demands, featuring advanced BMS, CAN bus communication and Bluetooth monitoring, also backed by a 3-year under bonnet warranty.

Invicta Xero Range Benefits:

  • 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 system components for accurate data
  • Bluetooth monitoring – Easy access via the Invicta app
  • IP67 rated design – Water and dust resistant for harsh environments
  • Rugged internal construction – Reinforced casing and vibration-resistant design
  • Advanced safety features – Built-in passive and active protections

Charger Options

REDARC Classic 25A (BCDC1225D) – Reliable, entry-level DC-DC charger ideal for small-to-medium battery systems, featuring dual input charging (solar + alternator) and built-in MPPT for efficient off-grid performance.

REDARC Classic 40A (BCDC1240D) – Higher output DC-DC charger suited for larger battery banks and higher power demands, delivering faster charge times while maintaining proven durability in harsh conditions.

Classic Series Benefits:

  • Dual input charging – Charges from solar and alternator simultaneously
  • Green Power Priority™ – Prioritises solar input to reduce alternator load
  • Built-in MPPT regulator – Maximises solar efficiency and energy harvest
  • Multi-battery compatibility – Supports AGM, GEL, Lead Acid, Calcium & Lithium (LiFePO4)
  • Smart alternator compatible – Works with both standard and variable voltage alternators
  • Proven charging profiles – Optimised charging to maximise battery life
  • Under-bonnet ready – Designed to handle heat, vibration, water and dust
  • Australian tested – Engineered for extreme conditions up to 80°C

Socket Bank Options

Passenger-Side Socket Banks (Included Option)

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 plug
  • 2 x Grey Anderson outputs

Note: Socket banks are supplied for passenger-side installation only. If you require a driver-side socket, please purchase the Driver-Side Add-On Socket with Y-Lead Bundle.

Specifications

  • Vehicle Compatibility: Toyota LandCruiser 300 Series
  • Battery Compatibility: Lithium Batteries Only
  • Tray Dimensions: 375mm (L) x 325mm (W) x 215mm (H)
  • Maximum Battery Size: 308mm (L) × 168mm (W) × 220mm (H)
  • Maximum Battery Weight: 15kg
  • System Voltage: 12V
  • Mounting Location: Under Bonnet
  • Construction: Laser-Cut Aluminium
  • Finish: Matte Black Powder Coat
FAQs

I thought you couldn’t put lithium batteries under the bonnet?

You're right, most lithium batteries can’t go underbonnet. However, the Invicta Xero range is specifically rated and warranted for under-bonnet use. The internal BMS protects the battery by switching it off when it gets too hot and turning it back on once it cools. It’s super safe, and we’ve installed over 400 of these kits, both DIY and in-house here at our workshop in Maroochydore.

Can I add towing gear like an Isolated Anderson Plug, ESC, Tow-Pro, or a trailer bracket to this kit?

Absolutely. Just add those accessories when ordering and we’ll modify the kit to suit, including fusing, routing, and pre-wiring where needed so it’s all ready to go in one seamless install.

3I have a GR Sport with the honeycomb grille. How do I plug in solar if I can’t go through the grille?

No problem, just choose either the under-bonnet solar plug option or roof-mount solar input when checking out. You can still run a portable panel through a red Anderson plug mounted to your roof rack or wherever works best on your setup.

4Can I upgrade to the REDARC Alpha charger for jumpstart and start battery support?

Yes, we offer a separate kit built specifically around the REDARC Alpha charger, which gives you Bluetooth app control, start battery maintenance, and a jumpstart function. [Click here to see our LC300 Underbonnet Kit with Jumpstart Feature.]

5. Does this kit work with the factory battery and my existing setup?

Yes, this system mounts beside your factory start battery and works independently with your lithium auxiliary. It integrates seamlessly with your factory wiring, and you can still add solar, towing gear, or other accessories.

6. How hard is the install, can I do it myself?

This is one of our most DIY-friendly kits. It includes detailed PDF instructions, a full YouTube video walkthrough, and pre-wired looms that plug into factory bolt locations. No cutting, splicing, or guesswork needed.

Why isn’t my tailgate working after a dual battery install (300 Series)?

This is a known and harmless quirk that can occasionally occur on the 300 Series after electrical work such as a dual battery installation. In some cases, the tailgate control module may not immediately re-sync once the work is completed.

How to fix it:

  1. Close the tailgate fully (using the tailgate button or by manually closing it).
  2. Once the tailgate is shut, press Lock, then Unlock on the key fob or door switch.
  3. The tailgate should now operate normally.

No further action or repairs are required. This does not indicate a fault with the dual battery system or with the vehicle.

Shipping & Returns

Shipping Policy

This kit has a 2 business day fulfilment time. This means your order will be picked, assembled (if required), and prepared for dispatch within two business days of purchase.

Once dispatched, you will receive a tracking number via email so you can monitor the progress of your delivery.

Estimated delivery timeframes within Australia:

  • Standard Shipping: 5 – 7 business days
  • Express Shipping: 3 – 5 business days

Please note:

  • Delivery timeframes are estimates and may vary depending on your location and the shipping carrier.
  • Delivery timeframes do not include the 2 business day fulfilment time.
  • Tracking updates may take time to appear after dispatch while the carrier processes the shipment.
  • Once your order has been dispatched, it is in the hands of the shipping carrier. For delivery updates, delays, or enquiries, we recommend contacting the carrier directly using your tracking number.

We take care to ensure your order is securely packaged and dispatched as quickly as possible.

Returns Policy – 30 Days

We offer a 30-day return period from the date your order is delivered.

To be eligible for a return, the product must be:

  • In as-new, resellable condition
  • Unused and uninstalled
  • In the original packaging, including all supplied components and hardware
  • Free from damage, modification, or signs of installation

Returns that do not meet these conditions may be refused.

The customer is responsible for all return shipping costs.

Once the returned product has been received and inspected, and meets our return criteria, a refund will be processed to the original payment method.

Original shipping costs are non-refundable.

Exchanges

If you wish to exchange a product for a different item, the following applies:

  • The original product must be returned in as-new, resellable condition, in original packaging
  • The customer is responsible for the shipping cost to return the original product
  • The customer is also responsible for the shipping cost of the replacement product being sent out

Once the original item is received and inspected, we will arrange dispatch of the replacement product.

Important Notes

  • We recommend using a tracked shipping service when returning products, as we cannot be responsible for items lost in transit.
  • Accelerate Off-Grid Touring reserves the right to inspect and verify the condition of all returned items before approving refunds or exchanges.
  • Products that have been installed, modified, damaged, or are missing components may not be eligible for return.
Installation

Doing it yourself?

Installation Video
Installation PDF

If you run into any issues during your install or need some advice, our team is here to help.

Simply click here to access our Tech Support Form and we’ll get back to you as soon as possible.

Want It Installed In Your 300 Series?

If you’d like this 300 Series Under Bonnet Dual Battery Kit professionally installed into your vehicle, we’ve got you covered.

Simply purchase this product and then get in touch with the team at Accelerate Off-Grid Touring to book your installation.

Installations start from $770 – contact us for a tailored quote.

Address: 17 Trinder Avenue, Maroochydore QLD
Phone: 07 5479 6652
Website: accelerateoffgrid.com.au

Click here to get in touch and book your install.

PLEASE NOTE: Accelerate Off-Grid Touring has many Designs, Patents, and Trademarks registered in Australia and internationally.