Ever wanted to be able to power appliances like fridges or induction cookers in your 4wd, caravan or RV? The system should isolate and protect the starting battery from the power drain. The power should be drawn from a completely separate battery to that of the starter battery. The system should be capable of bringing the secondary battery to aid vehicle starting (if applicable). The alternator should charge the starter battery first and then divert power to the secondary battery automatically. Dc-to-Dc charging is a desired option as its ability to fully charge a secondary battery is achieved. Cable sizes play a massive role in the system especially over great distances through Anderson connections. Having the incorrect size cable can rob your system of charge. Correct monitoring of the system is just as important as the system itself.
Why Choose Us
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Matt's knowledge and experience of all 12 volt systems for vehicles and caravans is second to none! His workmanship, attention to detail, care of your property is exemplary. Can't recommend... read more him highly enough.
Mark Gibbons
August 18, 2021Can't rate you highly enough Matt was excellent went above and beyond Communcation has been excellent all the way Great service keep up the fantastic work
Andrea Conway
December 2, 2021I used extreme auto for the first time today to get my dual battery system sorted. I can't praise Matt enough for his punctuality, knowledge, friendliness and workmanship..... oh and... read more price. Top bloke...... highly recommend him to anyone! ����
Fab Jenn
February 9, 2017 -
Did an awesome job on my hilux! Heaps of work done to a top standard!
Ryan Weckert
June 29, 2015Matt did a great job upgrading our solar on our van and was very helpful with advice on future things we may look at
Alan Jones
January 5, 2022thank you riley,for upgrading our battery system,also thank you matt for excellent advice,you where on site when you said you would be and to us that is excellent customer service,a... read more lot of other business people should take a leaf out of your book,again thank you
Dave Mcpherson
June 7, 2022 -
Matt does an amazing job and thinks about what you need for the type of travel you do. Very professional with attention to detail. Cannot recommend him enough! Had him... read more out a couple of times to fix things on the camper and when we upgraded the car to get us off road again.
Peta Matthews
May 26, 2021Matt recently installed my diesel heater. His business model is spot on. He books you in, confirms the day before he comes, sends you an sms when he... read more is close to arriving. Once on site, the quality of his work is spot on. His knowledge and expertise is of high standard and I would highly recommend.
Marcus Hooper
May 12, 2019Matt has installed a Solar battery system on our van, dual battery systems on two Utes, as well as UHF Radios, Light Bars and Spotties. This has all been done... read more as part of the mobile service and done to an incredibly high standard. Top this off with the best customer service we’ve experienced and we’d go nowhere else now. Would highly recommend this bloke! Regards Baz
Baz Bec Sims
February 29, 2020 -
Not only was Matt very efficient - professional and extremely knowledgeable about the work he does, he is also 'old school' when it comes to manners - respect and friendliness.... read more He also took the time to explain and look at a couple of other other things on/in my van that I didn't understand and that had nothing to do with the solar panels that he was installing for me. Also, when the job was completed he cleaned up after himself !? I am extremely happy with the job and also had a very pleasant few hours in Matt's company. I would highly recommend "Extreme Auto & Marine" to all. THANK YOU so much Matt !!
Marcia Veale
August 17, 2018Recently Matt and Riely installed a Monster Of grid solar system into our new Avida Esperance motorhome. After many queations asked by Matt on the requirements that we were expectng in... read more our off grid system and many Questions answered, Matt designed the monster. Matts knowledge and committment informing us and instalation surpassed all expectation, after installing the system which Matt designed he ran though and tested every component to the limits and thoroughly instructed us on usage of the monster. Highly recomend Matt & Riely if you are looking to be satisfied with your purchases for your RV, Motorhome or any camping requirements. The following system was designed by Matt for our personal needs for off griding. 1365AH (16.3kwh) custom off grid lithium set up. 🔋4 x Power Paul Australia Custom lithium batteries. 🔋1.2 KW of roof mounted solar 🔋Victron Multiplus inverter charger running on all the factory CMS outlets Including the microwave, air conditioner, washing machine, hairdryer induction cooker air fryer and more. All completely from the battery system and solar. 🔋Victron smart solar charge controllers 30 and 50 🔋Victron 100a DC-DC charger 🔋Victron Touch 50/CERBOGX 🔋Victron Smart shunt 🔋Victron Lynx distribution
Domenic Centofanti
April 11, 2022Matthew and Riley are two very professional tradesmen who honoured their time and fulfilled our requirements exactly how Matthew said it would be done sorting the electrical system on our... read more caravan. We will booking Matthew and Riley for a return job to install solar panels on our Windsor pop top
Adrian Hill
August 5, 2021 -
I called matt for some advice prior to purchasing today and I must admit his technical level of knowledge (I am a professional in a very similar industry), enthusiasm and... read more advice were absolutely second to none. I will definitely be using his services when on the road and would recommend him to anyone from the conversation I had alone.
Cy Cox
April 7, 2017First time I have used Matt, absolutely wrapped with the work he has done for me on installing solar panels, lithium batteries and would absolutely recommend him to anyone.
Neville Hembury
December 1, 2020Had Matt install reversing sensors and LED indicator on my Sorento SUV and must say I am very impressed with both his workmanship, professionalism and good old customer service. His... read more competitive pricing is a bonus as well, along with his mobile workshop. Highly recommended!
Nicholas Ng
December 14, 2015 -
I have used Matthew for the first time today. I had an AES fridge problem. What a great operator. Knows his stuff, very reasonable price and nice guy to go... read more with it. He offers something that is missing in businesses these days. It's called service. Will be using them again and fully recommend this business
Kerry McCloud
November 27, 2019I have used Matt for all my 12v set ups over the last few years. Great guy who gives great service and knowledge of his trade. Thanks Matt for replacing... read more my panels & interior bed lighting 👍😊
Judy Snider
November 28, 2020Extremely happy to HIGHLY recommend this business.Did a heap of lithium battery related work on my car and caravan for a VERY REASONABLE price.***** 12/10 A BIG thank you to... read more Riley and Matt. Well done blokes👍👏
John Wertiko
February 22, 2022 -
Matt did a great job very professional, great communication and polite, I will highly recommend him
Keith Fleming
March 11, 2019Great professional service , solved a problem in 5 minutes that had us stressed for a couple of months, all because the manufacturer didn’t put the correct size fuse... read more when built . Would highly recommend Matt. Thank you , Janice & Alan
Janice Key
November 19, 2021Matt and Riley just set up our van to 12 volt, set the tow rig up with dual batteries and installed spot lights. We are so happy with their work,... read more so professional and took the time to explain everything to us newbies. Thanks guys we are thrilled.
Ingrid Elzinga
October 1, 2021 -
Hey just want to say thanks heaps mate for the the work you done on my car I could not be happier. I am one happy customer and would recommend... read more you to all my mates :0)
Nick Clifton
June 26, 2014I had Charles come out last Thursday to wire up second battery with a dc dc charger. What a great job he did. Plus a great guy also. I have... read more some more jobs soon and wont hesitate to use them again.
David Griffin
June 24, 2019Thoroughly recommend Matt and his team for their customer service. Nothing is too much trouble, even providing a replacement cap for a diesel tank installed a couple of years ago.... read more Thanks Matt.
Terri Bateup
June 16, 2021 -
Matt is a true professional, treats every job like his own. would not hesitate to recommend Extreme to anyone looking for work done
Ian Smith
August 1, 2019Matthew was very accommodating with anything we ask for. He is very professional and did a very clean job not leaving any mess. We would also like to thank... read more Riley for doing a very good job on the solar panels. We would definitely recommend them. The wait was worth it. Thank you
Lee Inns
August 3, 2022Had a great job done by Mat & Riley fitting my 330ah mercury battery (power paul) also relocating my Victron gauge to a great spot. Top job boys., on... read more top of the passed great work, redarc bc dc charger, Victron 3000 watt inverter, & extra 600Watts of solar.
Faye Gordon Turnbull
January 23, 2022 -
I thought from the reviews that these guys knew their stuff,, and I was not disappointed. Excellent knowledge of all things 12 volt, Victron, automotive, the list goes on exactly... read more who I needed to solve my issues, Thanks Matt, you did a great job...
Evan Higgins
May 18, 2021We have been using Matt’s services for a while now, when you’re on a good thing, stick to it. Great service from Matt, and now Riley. No job too small... read more or too big. Recent issue with brake controller and Riley was here the next day.
Alana Odam
November 4, 2021There are good reasons that these guys are flat out and booked months in advance. Courteous, punctual, knowledgeable and informative, but most of all, their work is of the highest... read more quality. Matt and Riley did a great job upgrading the power and solar capabilities of our Eagle Cherokee and fixed the Anderson set up on our Prado (that was new but substandard) and even wired up a new set of spotlights too. Matt explained a number of shortcomings and misconceptions regarding some of the "plug and play" harness and wiring looms that get sold to unknowing customers (me) and saved me time, effort and likely damage had I attempted the job myself. I cannot recommend these guys highly enough.
Hilton Gumbys
August 17, 2022
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