Prado 250 Series – 220Ah Underfloor Dual Battery Kit 

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 100Ah underfloor kit, we engineered a brand-new tray and wiring system to safely house a massive 220Ah battery under the rear floor, giving you significantly more runtime and the ability to run larger 2000 W inverters.

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

Inbuilt 40A DC Charger - High quality internal DC charger has already been built into this 220Ah battery

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 Accelerator 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

Battery + Charger

12v 220 Ah Underfloor Lithium + In-built 40A DCDC Charger > Spec Sheet
Exclusive under-floor fitment battery designed for maximum capacity in the Prado 250.

• Slimline 12V 220Ah LiFePO₄ deep-cycle battery
• Integrated 40A DC-DC charger (10–16V input)
• Strong, lightweight aluminium enclosure
• High-quality prismatic cells in metal hard case
• Internal Australian-designed BMS
• 240A continuous discharge
• Up to 140A charging capability
• M8 threaded terminals for secure connections
• 1 x Grey Anderson (50A in/out)
• 1 x Blue Anderson (DC-DC charger input)
• Short-circuit, over-current, over-voltage, and under-voltage protection
• Battery on/off switch
• Parallel capable
• Series capable (max 2 in series)
• Designed and assembled in Australia

Specifications

• Chemistry: LiFePO₄
• Nominal Voltage: 12V
• Capacity: 220Ah
• Energy: 2.7kWh
• Recommended Charge Voltage: 14.0V (13.8–14.6V acceptable)
• Full Charge Voltage (100% SoC): 13.8V
• Low-Voltage Cut-off: ~10.5V
• Max Charge Current: 140A
• Max Discharge: 240A continuous
• Surge Discharge: 480A
• Cycle Life:
  • 2000 cycles @ 80% DoD
  • 5000 cycles @ 50% DoD
• Weight: 24.0 kg (24.8 kg packaged)
• Parallel Capable: Yes
• Series Capable: Yes, up to 2 batteries
• Dimensions:
  • Width: 257 mm
  • Depth: 90 mm
  • Length L1: 672 mm
  • Length L2: 682 mm (including terminals/handles)

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

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

Socket Bank 2

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

Socket Bank 3

• USB A/C
• 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

• Accelerate 220 Ah underfloor battery tray – purpose-built, laser-cut, and powder-coated textured black
• 220Ah Battery2- With inbuilt 40A DC-DC Charger
• 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: Inbuilt DC-DC Charger
• Monitoring: Victron SmartShunt
• 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