Client goal
The problem to solve
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.
Project case study
Range Rover 6x6 Ultra-Range EV Development Study
EV development study / extreme range concept
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 / platformClassic Range Rover 6x6 former fire engine
Project typeEV development study / extreme range concept
The brief
What VASS was asked to do
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.
Scope of work
Defined engineering work
- 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
Key systems
Systems involved
- Five VW EV battery packs
- Parallel battery architecture concept
- Pack voltage matching logic
- Contactor sequencing concept
- Precharge strategy
- Pack switching strategy
- Extreme-range vehicle packaging
Engineering challenge
What needed careful resolution
- 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
Practical outcome
The result
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 clients
What this means for another project
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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