Prado 250 Series – 220Ah Underfloor Dual Battery Kit with Jumpstart

After months of design, fitment testing, and refinement, our Accelerate Off-Grid Touring Prado 250 Series 220 Ah Underfloor Dual Battery Kit is finally here, the highest-capacity underfloor battery system ever offered for the new 250 Series.

Following the huge success of our 100 Ah underfloor kit, we engineered a brand-new tray and wiring system to safely house a massive 220 Ah battery under the rear floor, giving you significantly more runtime, the ability to run larger 2000 W inverters, and full jumpstart capability when paired with the REDARC Alpha Series chargers.

This system installs entirely under the rear floor with no cabling required from the front of the vehicle. It suits both 5-seat and 7-seat Prados and is compatible with RV Solutions drawer systems (not compatible with RV Solutions false floors).

Everything is pre-terminated, fused, labelled, and designed to be as plug-and-play as possible — simply bolt in the tray, plug in the harnesses, and you’re ready for off-grid touring.

🔑 Key Features

• Under-floor installation – Keeps your cargo area and cabin free, with everything hidden beneath the factory floor
• Massive 220 Ah capacity – Significantly extended runtime for fridges, lighting, induction, and larger power systems
• Jump-start capability – Available when selecting a REDARC Alpha charger (set up and pre-programmed by us)
• Vehicle-specific tray design – Purpose-built tray engineered exclusively for the Prado 250 Series
• Locally built & powder-coated – Laser-cut on the Sunshine Coast and powder-coated in textured black
• Pre-terminated wiring loom – Fully fused, labelled, and plug-and-play, with no wiring run to the engine bay
• Modular socket bank options – Choose passenger or driver side; optional add-on to run both
• Compatible with RV Solutions drawer systems – Direct fit; not compatible with RV Solutions false floors
• Works with Accelerate inverter/compressor kits – Integrated system with pre-mounted mega fuse when purchased together
• Proudly designed and built by Accelerate Off-Grid Touring – Tested and proven on Australian touring vehicles

⚡ Charger Options

REDARC Alpha 25A

Waterproof, smart alternator compatible, jumpstart-capable DC-DC charger with Bluetooth monitoring.

Alpha Series Benefits:

• Jumpstart a flat start battery (via programmed jumpstart mode)
• Start battery maintenance mode
• Green Power Priority™ – prioritises solar first
• Adjustable input current limit
• Bluetooth monitoring through the RedVision app
• IP67/69K environmental rating
• Over-the-air firmware updates

REDARC Alpha 50A (Dialled to 40A for Prado Compatibility)

• Provides higher charge capability
• Fully compatible with Prado 250 when limited to 40 A (pre-programmed by us)
  
• Jumpstart a flat start battery (via programmed jumpstart mode)
• Start battery maintenance mode
• Green Power Priority™ – prioritises solar first
• Adjustable input current limit
• Bluetooth monitoring through the RedVision app
• IP67/69K environmental rating
• Over-the-air firmware updates

🔋 Battery

12v 220 Ah Underfloor Lithium > Spec Sheet
Exclusive under-floor fitment battery designed for maximum capacity in the Prado 250.

• 12V 220Ah slimline LiFePO₄ battery
• High-performance BMS with 240A max discharge
• Lightweight, slim and compact housing
• Designed for deep-cycle auxiliary power systems
• Can be used in parallel to increase capacity
• Built-in over-voltage, under-voltage, over-current, and temperature protection
• M8 threaded terminals for secure connections
• Long lifespan with high cycle rating
• Designed and assembled in Australia

Specifications:

• Nominal Voltage: 12.8V
• Nominal Capacity: 220Ah
• Recommended Charge Voltage: 14.6V
• Recommended Float Voltage: 13.8V
• Max Charge Current: 100A
• Max Discharge Current: 240A (continuous)
• Peak Discharge: 450A (≤ 10 sec)
• Charge Temperature: 0°C to 45°C
• Discharge Temperature: –20°C to 60°C
• Storage Temperature: –20°C to 45°C
• Dimensions: 690 mm (L) × 305 mm (W) × 68 mm (H)
• Weight: 28.5 kg
• Cycle Life: > 2000 cycles (80% DOD)

🔌 Socket Bank Options

Choose which side you want your sockets located.
(All socket banks come pre-wired and fused from the 6-way fuse block.)

Available Passenger or Drivers Side 

Socket Bank 1

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

Socket Bank 2

• 2 x Dual USB A/C
• 1 x Grey Anderson Outputs
• 1 x red Anderson Input

Socket Bank 3

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

Optional Upgrade (Add-On Product)

Dual Sockets – Install socket banks on both sides. 

Socket Bank Orientation Note

When adding a second socket bank, make sure to select the opposite side to the one chosen for your kit.
For example:

• If your dual battery kit includes a driver-side socket bank → select passenger-side as your add-on.
• If your kit includes a passenger-side socket bank → select driver-side as your add-on.

This ensures both sides of the vehicle are covered and all wiring reaches correctly.

📦 What’s Included

• Custom Accelerate 220 Ah underfloor battery tray – purpose-built, laser-cut, and powder-coated textured black
• REDARC Alpha charger (25A or 50A dialled to 40A) – pre-mounted, pre-wired and fused
• Quad MIDI fuse holder – fused for DC-IN, DC-OUT, solar, and fuse box
• 6-way fuse block – pre-fused for socket banks with spare circuits for future accessories
• Victron SmartShunt – full battery monitoring via app
• Pre-terminated wiring harness – professionally loomed, fused, labelled, and plug-and-play
• Blue Anderson (charger input)
• Grey Anderson (output to socket bank)
• Red Anderson (solar input)
• Battery strap, brackets, and all mounting hardware
• Protective conduit and all required terminals
• Installation guide and wiring diagram

⚙️ Specifications

• System Voltage: 12 V
• Battery Capacity: 220 Ah Lithium (LiFePO₄)
• Charger: REDARC Alpha 25A or Alpha 50A (programmed to 40A)
• Monitoring: Victron SmartShunt + REDARC Bluetooth app
• Mounting Location: Under rear floor
• Tray Finish: Textured black powder-coat
• Vehicle Compatibility: Toyota LandCruiser Prado 250 Series (2024 onwards)
• Fitment Notes:
  • Compatible with RV Solutions drawer systems
  • Not compatible with RV Solutions false floors (battery height clearance)
  • Not yet tested with other brand floors/drawers