Dual battery installation Perth

Make a second battery your first thought

Dual battery system installation

As the name suggests, a dual battery system is where you have a second battery installed in your vehicle. 

This allows you to continue running accessories without draining your main (starter) battery. 

Dual battery systems are ideal if you enjoy camping or off-roading, where you often need to power a fridge, radio, or lighting system. 

The team at Voltaic are equipped with the knowledge and tools to provide a high-quality dual battery installation in Perth.

dual battery round

Installation locations

We can perform a dual battery installation on most vehicles. The key is to ensure the secondary system is isolated from your main system, so your starter battery does not flatten. A dual battery system can be installed in a variety of places in your car, depending on your vehicle type and usage requirements.

Common installation locations include:

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

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Dual battery setup for your fridge

A fresh meal or cold drink while enjoying the great outdoors can take your adventure to the next level. Keeping your food and drinks cold is easy with a fridge powered by your dual battery system. Voltaic Auto Electrical are specialists at installing dual battery systems to suit your fridge requirements.

Dual battery setup with a solar panel

If you are setting up camp for a few days or just want to keep your secondary battery topped up, a dual battery setup with a solar panel could be the solution. Using the sun’s rays during the day to power your camp at night is a great option, especially during the warmer months.

Dual battery setup for your 4x4

Dual battery systems are a popular choice for off-road enthusiasts. A reliable backup battery to start your vehicle when you are off the beaten track is a weight off your shoulders. A dual battery setup for your 4×4 vehicle will ensure you are always equipped for your next adventure.

Dual battery setup for your camper trailer

If you love the great outdoors, there’s a good chance you enjoy getting out in your camper trailer. A dual battery setup in your camper trailer makes cooking and running appliances a breeze. The added benefit of being able to power a lighting system for your campsite at night is also a huge advantage.

REDARC dual battery setup

At Voltaic we supply and recommend REDARC products. Their Australian made, high-tech BCDC in-vehicle battery charger protects your main (starter) battery from excessive discharge by isolating the secondary battery to power other non-essential appliances. 



Customer testimonials

after shopping around a lot i found these guys
just amazing service
young anthony explained my fitting today of the uhf and antenna mounts job on my next gen ranger , polite informative and bloody knowledgeable , install was smashed out and also showed me lots of ideas and extras that do
literally blown away job is so neat professional and can’t wait to get more things i’ve found my one stop shop
looking forward to my dual battery set up
and more

i would highly recommend speaking to this young bloke about anything you want regarding fit outs
also they have way more than what i thought in their workshop
legend mate thanks heaps
also that have a lay down yard so me being fifo for my next jobs you can leave your car their fully secure
stoked
Kayne did a great job recommending products that were suited for my requirements. He also took great care during the install and communicated well as needed. Would definitely recommend to anyone looking for a clean 12v setup.
Dion worked out a plan to install a second battery system for a Star Link. The work was done promptly and everything was very tidy. He also was very thorough in explaining how to operate the system. The pricing was reasonable. Highly recommend Voltaic and Dion
I had a fantastic experience with Voltaic Auto Electrical!

Kody was excellent throughout the process and listened to all my requests and concerns. The communication was excellent, and I was informed every step of the way. Kody followed through and did a fantastic job on my Landcruiser.

Thank you guys very much, and thanks, Kody!!
Took my car to voltaic to get some aftermarket headlights installed. Anthony did a fantastic job with the install, knocking it off in less than a day. he called me halfway through the day to let me know the plan and was more than happy to walk me through the work that had been completed when i came to pick it up. Top bloke!
Finding a trustworthy tradesperson can be daunting for me, but I couldn’t have felt more at ease. From the start, the team at Voltaic were prompt to reply, helpful, friendly, and completely upfront about costs—no hidden surprises or upselling. I never felt like a burden or that my questions weren’t valued. Their honesty and integrity truly stood out, and I’m grateful to have found a business I could rely on. Highly recommend!
Staff were very friendly and helpful. Giving helpful suggestions and advice. Pleased with the work done.
A very very capable team of young lads who heavily focus on quality and presentation. You can openly communicate with the team and they will take everything you say to account. I will be recommending voltaic to my family and friends.
After several bad experiences with a dealership (car under warranty) I decided to go elsewhere. Voltaic staff have customer service unparalleled. They went above and beyond researching different solutions (parts new, used, genuine and independently sourced) and gave me comfort and confidence that I was getting the best possible service and workmanship. Especially if you haven’t much car knowledge, I wholeheartedly recommend Voltaic. The technician fixing my car (James) brainstormed so many options for me until we found something that matched my budget and timeframe I needed my car back in. Genuine and trustworthy, James knows his stuff and is keen to help make a difference when he can.
Last minute urgent appointment to check out my electronic break system whilst driving through Perth. They fit me in and talked me through everything. Were very generous with their time and great customer service.
I recently had my car's AC fixed at Voltaic, and I couldn't be happier with their service! From the moment I booked the appointment with Tara over the phone, everything was smooth and professional. She made the process easy and ensured all my questions were answered.

A big shoutout to Dion, the technician who worked on my BMW. Being a BMW owner himself, he not only repaired the AC efficiently but also kept me informed every step of the way. Dion went above and beyond by showing me the repair process at each stage, which really gave me confidence in their transparency and expertise.

It's refreshing to find a garage that prioritizes transparency, excellent communication, and high-quality workmanship.
Thanks Anthony for the great work on the Cub Camper. Honest helpful value based service.
Work done on my car with my aux battery was great and was of very good quality. Shout out to Anthony for doing an excellent job.
Every time I take my vehicle in I’m provided exceptional customer service and transparency on costs!
Had an issue with my air conditioner they were able to rectify and repair the issue.
Staff are friendly and knowledgeable and great communication on the issue
Had my Toyota 200 series worked on by Voltaic Auto Electrical. Best in the Business
Paul has done a fantastic job on my TB48 patrol. After having issues with my aircon for over 2 years, hes redone multiple lines, fixed all the leaks and tidied up my engine bay. Very happy with the results and highly recommend

Very reasonable price too
I highly recommend Voltaic Auto Electrical for their exceptional service, expert knowledge and super friendly team. There’s no one else I trust with my car!
Excellent Service from Josh, Tara & the team!! Recommended!
Recently had an air conditioner installed on our dog trailer the service and installation from Paul Williams was excellent and nothing was a problem for him to deal with .
I had my Dmax in for a Starlink installation which included a more complex setup of an external router, external antenna, etc. Dion did an amazing job with the installation, going above and beyond with what was requested.

Dion and the Voltaic team have been incredibly accomodating, professional and have provided the best service that I’ve received when it comes to auto electrical installations.

Would happily recommend Voltaic, Dion and the team for any type of Starlink install and any auto electrical work. Thanks again!
Everyone at Voltaic were very friendly and very knowledgeable about the services I required. I was able to get in within a week of me calling up where i wouldn't have been able to get in until 2025 for the more commercialised companies like ironman 4x4 and TJM. I am very happy with the service they provided. I will be coming back for more work on our 4x4
Highly recommend this company for all your auto electrical work. We had a great technician in Anthony he did an awesome job installing Starlink in our caravan.
I’ve had quite a few electrical jobs done on my car through Voltaic. They do a very good job. They are always friendly and happy to answer any questions you may have. I wouldn’t go anywhere else! Thanks guys
I found Voltaic Auto Electrical after looking for a 12v system for my Ford Ranger over a year ago, i ended up going with one of the battery box setups as i don't require constant power in my tub. The service and quality I received on that initial job has guaranteed them a client for life. I will always go to Voltaic for all my auto electrical work and have been back for tail lights, rear lights, electrical tidying, and no doubt I will be back for more in the future.

Big thanks to the team at Voltaic.

They also have great merchandise.
Very happy with Voltaic Electrical, all staff very professional & efficient. Wouldn’t hesitate to recommend their work & advice they gave.
My car air-conditioning was blowing warm air, so I wanted it checked before the hot Perth summer arrived. I received fantastic customer service from Voltaic from start to finish. Friendly customer service, honest feedback to advise that due to the age of my car, it might be an expensive repair, speedy diagnosis and repair which ended in happy news - my gas needed topping up and a filter change. I would thoroughly recommend Voltaic Auto Electrical.
The Team at Voltaic pulled out all stops to have our vehicle fitted with a UHF radio and flashing beacon at short notice and no compromise with the quality of work carried out. Excellent service, thank you.
Can't fault them . Great service . Very polite and helpful. I'd recommend them for any of their auto electrical services .
Friendly, helpful staff, fair pricing..
Had a UHF radio/aerial installed by someone else that wasn't performing as expected so bought a new one. They took the old one out & put the new one in, in no time! Also grateful that they didn't use the aerial mount provided because it would have damaged my paintwork, and instead found a different mount that worked. I'll have no hesitation in taking my car back here for future installs!
Fantastic service by all the team and particular props to technician Kane. All issues were diagnosed and repaired, in addition to upgrades. He really went above to make sure my car was electrically safe and sound.
Kayne from Voltaic did a great job wiring up my battery to my car and getting everything set up Highly recommend this place they do a good work
Great service easy to deal with.
Was very happy with the workmanship from Voltaic and especially Anthony who completed the UHF install into the Motorhome. Many thanks also for the assistance driving in and out through the gateway as the vehicle was too large to fit into the main workshop area.
Good efficient service
My Vantrue dash cam was fitted by a very professional team at Voltaic Auto Electrical today Very happy with the result and installation time
Thank you
These guys did a great job wiring up my pilot van, at a fair price, I definitely recommend them.
Voltaic team provided excellent service, the whole process was quick and easy from estimate to completion. Great advice and suggestions were provided. Top quality work completed on my vehicle.
Had trouble with me Starlink not working went down to voltaic and Paul and Kayne work there magic and now it’s all sweet
Thanks so much guys
I will be letting everyone know on Facebook Starlink page
Voltaic managed to squeeze me in as we are traveling. They were very helpful then carried out a great job. I highly recommend them.
Installed a new alternator at a good price in a couple hours on short notice after car had been taken to other workshops and couldn't determine the issue, it also fixed my fluctuating idle . Great staff, great service!!
From the moment you enter the business you know your in great hands. The people at reception are fantastic, they make you welcome. And are there to help you. The team at the back are professional and know there business. Would highly recommend them. Keep up the great work .
Had Kayne work on my old Daihatsu Rocky he got everything I needed back to better then factory and got me back behind the wheel of my pride and joy. The communication and understanding that Kayne had made having him work on the car, was amazing. I would absolutely recommend anyone to use Voltaic as their team and work ethic is 110% could not have asked for a better job to be done and again Kayne was an absolute pleasure to have work on my car!!!
I was very happy with the standard of service from all staff at Voltaic: from the prompt and thorough responses from Jaimee to my numerous initial inquiries, through to the workmanship with the installation of dash cameras, and explanations by the technician. All staff were professional and patient with my requests and questions. I would recommend this business for dashcam installations.
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FAQs

How much does a dual battery system cost?

The cost of a dual battery system depends on the type of battery you choose, your vehicle type, and where you want it installed. Our rates start from $1900 including the cost of the battery and equipment required for the system.

How long does it take to install a dual battery system?

Installation typically takes 6-8 hours depending on the type of system, your chosen installation location of the products, and the complexity of the work involved.

What is the best type of battery for a dual battery system?

The type of battery to choose for your dual battery system depends on how much you wish to spend and where you would like it installed in your vehicle. We recommend a deep cycle wet-cell battery for installation under the bonnet or in the tray of your ute. This type of battery tends to build up gasses during charging, so it needs to be away from vehicle occupants. If you would like to install the battery in your vehicle’s cabin or in a canopy, we recommend one that won’t leak, spill, or emit gasses, such as a deep cycle AGM, lithium, or gel battery.

What is a deep cycle battery?

Deep cycle batteries differ from regular car batteries in that they are constructed with thicker battery plates and denser active material. This helps them withstand the repeated charge and discharge cycles of a dual battery system.

How does a dual battery system charge?

The simplest method of charging your second battery is by using your vehicle’s alternator. The battery charges while you are driving your vehicle, in the same way as your main (starter) battery. When installing your dual battery system, we isolate the second battery from your main battery to ensure your main battery does not flatten.