How to Choose the Right Dual Battery System for You

A happy auto electrician employee testing the auto electrics of a dual battery system

Heading off on off-road journeys means more than having a sturdy four-wheel drive. It also involves ensuring you have a reliable power source to sustain your adventures.

Leveraging our years of dual battery installation experience, we’ve broken down the differences between under the bonnet, battery box, and behind-the-seat systems to help you figure out which is best for you.

Different Types of Dual Battery Systems

There are three main types of dual battery systems: under-the-bonnet, battery box, and behind-the-seat.

Whether you opt for an under-the-bonnet system, a versatile battery box, or a neat behind-the-seat setup, each offers unique advantages and can be tailored to meet your specific needs.

Under the Bonnet Systems

If your vehicle has a bit more room under the hood and you prefer a clean, integrated look, our ‘Under the Bonnet’ systems could be the ideal choice.

This system is all about using the available space efficiently and keeping everything looking as good as new.


  • Seamless Integration: Installed under the bonnet, this system stays out of sight, maintaining the vehicle’s original aesthetics. It’s like having a secret power source that doesn’t interfere with the look or space of your vehicle.
  • Maximised Space: Since it’s tucked away under the bonnet, you won’t lose any precious interior or cargo space. This setup leaves more room for your essentials and adventure gear.
  • Built to Last: Designed for durability and minimal maintenance, this system is set and forget. Once installed, it requires little attention, letting you focus more on your travels and less on upkeep.

Suitable For

This system fits perfectly in larger SUVs with spacious engine bays, like Toyota Landcruisers, Hiluxes, and Nissan Patrols.

Battery Box Systems

For those who need a more adaptable and portable power solution, the Battery Box Systems are a good option.

This system is especially suited for those who may switch vehicles frequently or need the flexibility to move their power source as needed.

If the under-the-bonnet option isn’t a fit due to space constraints or you simply prefer a more flexible setup, our Battery Box Systems are likely to tick all your boxes.


  • Universal Fit: One of the biggest perks of a battery box is its compatibility. No matter the type of vehicle you drive – be it a sedan, a compact SUV, or anything in between – this system can be integrated smoothly.
  • Flexible Placement: The real beauty of the battery box system lies in its versatility. You can place it in the boot, under seats, or in other nooks within your vehicle, making it easy to optimise space according to your specific needs.
  • Lightweight Options: With the ability to use either standard or lithium batteries, you can keep your setup light yet powerful. This is particularly beneficial for maintaining fuel efficiency and reducing overall vehicle wear and tear.

Suitable For

Ideal for those who enjoy varied adventures in different vehicles, this system can be easily moved from one vehicle to another, providing ultimate flexibility for your power needs.

Behind the Seat Systems

This option is particularly appealing to those who need to maintain a clear cargo area while ensuring their power needs are met discreetly and efficiently.

Tailored for vehicle owners who prioritise maintaining both the aesthetics and functionality of their vehicle’s interior, our Behind the Seat Systems offer a smart power solution without compromising on space or style.


  • Optimal Space Utilisation: This system fits snugly behind the rear seats, an area that typically goes unused in many vehicles. By harnessing this space, it provides power without cluttering your vehicle.
  • Concealed and Secure: Not only does the Behind the Seat setup keep the battery system out of sight, but it also adds an extra layer of security by shielding it from direct sight and access, making it less prone to theft.
  • Lightweight and Efficient: Compatible with lithium batteries, this system is lighter and offers greater efficiency, enhancing your vehicle’s performance without the added bulk.
  • Preserves Interior Aesthetics: By integrating into the backseat area, this system maintains the original look and feel of your vehicle’s interior, ensuring that functionality and style go hand-in-hand.

Suitable For

Ideal for medium-sized SUVs and trucks, such as the Ford Ranger or Nissan Dmax, the Behind the Seat Systems make clever use of interior design to boost your vehicle’s utility without sacrificing comfort or style.


Choosing the right dual battery system involves understanding your vehicle’s layout, your travel needs, and what you intend to power during your adventures.

Whether your choice is the under-the-bonnet, a versatile battery box, or a neatly integrated behind-the-seat setup, each has its unique advantages and can be tailored to meet your specific requirements.

For personalised recommendations based on your vehicle and lifestyle, talk to our dual battery installation specialists for expert guidance and to ensure your next adventure is powered effectively and efficiently.