Classic Range Rover 6x6 ultra range EV development study based on a former fire engine platform

EV development study / extreme range concept

Range Rover 6x6 Ultra-Range EV Development Study

An ambitious development study for a classic Range Rover 6x6 EV intended to attempt an extreme UK range record. The concept explored five VW battery packs in parallel, lightweighting work and control strategies for safely managing multiple large EV packs.

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Vehicle
Classic Range Rover 6x6 former fire engine
Project
EV development study / extreme range concept

Project introduction

The objective

Create an extreme-range electric vehicle capable of driving from the top of Scotland to Land’s End and setting a new benchmark for EV range.

The brief

Explore the feasibility of an ultra-range EV conversion using a classic Range Rover 6x6 platform, including weight reduction, battery packaging and the control strategy required for using five VW battery packs in parallel.

Engineering challenge

Problem, then system response

01 — Challenge
  • Managing the weight of a very large battery system
  • Deciding whether packs should be paralleled at start-up or used sequentially
  • Ensuring pack voltages would be close enough before connection
  • Designing control logic for safe and efficient current sharing
  • Understanding how to isolate a faulty pack during operation
  • Keeping the vehicle concept usable despite its extreme specification

System architecture

Systems brought together

  1. 01Five VW EV battery packs
  2. 02Parallel battery architecture concept
  3. 03Pack voltage matching logic
  4. 04Contactor sequencing concept
  5. 05Precharge strategy
  6. 06Pack switching strategy
  7. 07Extreme-range vehicle packaging

Engineering & integration

Turning architecture into a vehicle

VASS scope
  • Concept development for an extreme-range EV
  • Classic Range Rover 6x6 platform selection
  • Cabin shortening and weight reduction planning
  • Early battery packaging study
  • Five VW battery pack parallel architecture investigation
  • Control strategy discussion for pack connection and isolation
  • Review of ignition-on paralleling versus sequential pack use
  • Safety and efficiency considerations for multi-pack operation

Commissioning & result

Development outcome

Outcome

The project stopped before the full electrification stage, so it should be presented as a development study rather than a completed conversion. Even so, it was valuable because it pushed the thinking around parallel battery systems, safe control logic and the practical limits of extreme EV range projects.

For similar programmes

This project is useful for clients considering unusual battery architectures, parallel packs or extreme-range specialist vehicles. It shows the importance of control strategy before fabrication begins, especially when connecting multiple large EV battery packs together.

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