Complete Off-Grid 12v Dual-Battery Masterclass PART 3: Next-Level 12v Upgrades

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Part 3 of Cahn’s 12v Masterclass is an absolute cracker of a video!

In this FREE episode , Cahn will take your 12v system up a notch again, and show that you don’t have to spend a fortune to get an ultimate off-grid 12v system.

With this setup, you’ll never have to turn your fridge off again, you’ll have all the comforts of home with you anytime you camp, and you’ll be set to camp for as long as you want – even permanently!

PART 1: Part 1: Dual Battery Basics
In part 1, we’ll start with the basics of your vehicle’s 12v system, why you need a dual battery system, what everyone gets wrong and why it’s important to plan your system from the start so you don’t waste time and money. We’ll show you how to put together a 12v system that’s ideal for overnight or long weekend camping adventures, that’ll let you run your fridge and camp light and charge your phones while camping.

PART 2: Battery Charging Secrets Revealed
In part 2, we’ll take it to the next level by showing you how to keep your battery charge while you’re on the move with various vehicle-based battery charging options. We’ll talk about the different types of 12v battery isolators and chargers, including the latest in battery charging technology that’ll get you camping better and for longer!

PART 3 (this video!): Next-Level 12v Upgrades
In Part 3, we’ll take it up a notch again, and show that you don’t have to spend a fortune to get an ultimate off-grid 12v system. With this setup, you’ll never have to turn your fridge off again, you’ll have all the comforts of home with you anytime you camp, and you’ll be set to camp for as long as you want – even permanently!

Remember to hit that SUBSCRIBE button so you don't miss a moment of this cracking expert advice that every camper, overlander, explorer and 4WDer must hear!

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We have all the right gear you need to keep you out on the tracks for longer at incredibly low prices every day. Thanks for watching rom all the team here at 4 WD Supacentre!

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[thatongwenya]

I’m really learning a lot here... just need to watch these videos again and again for full understanding. Great work...

[pilothound]

Dude your series has been the easiest to understand by a country mile!! Excellent stuff Thank you 🤘

[LloydGM]

Super valuable videos which even my low-tech family understands and appreciates. /cheer Myself, I'm (re)building a 12v system for my RV that's copacetic with car camping, and this trio of videos is superb. Thank you! PS, I appreciate your ability to explain tech in plain English, and your analogies/examples are immensely valuable!

[usatennisproff]

Living a mobile lifestyle, I need to learn these techniques to be more self sufficient. Kudos to this very useful website, excellent presentation, and you have a new subscriber 😊

[flyingdutch]

Best way to increase your battery life; if you’re partner mentions hairdryer or microwave leave her at home to run off shore power

[s]

Actually really good explanation!

Well done Kings!

[youtrades]

I truly appreciate this little mini series! This delved quite a bit deeper into all of these little steps that I was not sure about, and answered some of the questions that have been plaguing my mind. I'm all set up! (For the moment😜

[johnkennedy]

I've been doing this for a long time and your videos are the simplest explanations I have ever seen or heard. You don't skimp on the details though. They will now be my 'go-to' s when trying to explain it to others.
Great work!

[mikekay]

The 3 part series so well explained....

[Michael_Mears]

Well done, Cahn. You’ve addressed a few things from the previous two videos, and finished the series with a lot of good information. Very good and simple explanation of PWM vs MPPT with respect to pv specs, wiring two batteries in parallel, inverter use, and solar requirements, plus other tips and tricks. Good work.

[michaelfraser]

Thanks for making solar simple and accessable

[markpicman]

Great language, easy to understand and enjoyable. Many thanks

[wolfgangsalinger]

Very good presentation and accurate. To make it even more perfect I would add a battery monitor which will tell % of battery capacity, Amps in and out. I built a similar system set up on my 4WD Slide-on with all the bells and whistles. Totally independent from the grid. Aircon powered by 2000w generator. Love it! Well Done presenter.

[charlieccchong]

Awesome presentation. Learn alot from your part 1/2/3. Thank alot.

[DjayZaJay]

This is the best Chanel I aver across and explaining right to the point easily understood. Cheers!

[Angusmcgluffety]

Seriously you guys are absolute legends . For someone like me who is just getting into and setting up our off grid systems, these videos have been awesome. Definitely buying all my stuff from you to show my appreciation and support. Cheers!

[johnnankivell]

Hello. There is one very important technical details about deep cycle batteries you forgot to mention: Capacity vs discharge rate.
Each battery will have its own spec but essentially, as the battery discharge rate increases, the stated battery capacity on the specification sheet will reduce. Also, same with its lifespan (number of cycles)

[marcusstacey]

Mate these videos are so informative, thank you so much. The one question I have left is how do you recommend you should wire the AC charger (shore power or generator) to your system and do you need to disconnect the DCDC charger when you are topping your batteries up from a 240v supply? Lastly, is it OK to run your fridge and other appliances while being charged from that AC source if you are using a smart charger?
OK, so that was 3 questions. Thanks again, you are a valuable asset to Kings and everyone who camps off-grid.

[kmusinami]

Sorry - late to this party. Fantastic instructional video. Quick beginner question. What wire gauge do you recommend for the home run between the two batteries?

[RustyRecovery]

This is without a doubt the best dual battery setup explanation / guide I have seen.  Great job. Thanks for sharing.