Charging your caravans lithium battery, dc charging? 

It's so so so hard to explain this so simply to people, but you nailed it! It's such an easy problem to have, especially when people get upgrade after upgrade, by different installers. You're one of the few installers that will take the time to go back to bare bones and do it right. Legendary!

The more of your videos I watch the more of my questions that get answered. Thanks for the information it's greatly appreciated.

Hi Matt, great video. It would be great to see a video of the do's/dont's of charging a battery located in the vehicles rear/canopy etc whilst charging a battery in a caravan simultaneously. I'm starting to see quite a few incorrectly wired in some very interesting ways! Keep up the great content, cheers Andy

Brilliant and easy to understand explanation Matt. 👌👍

Hi Matt, great video with loads of interesting stuff but why the inane background music. I had to replay some of the video just to pick up on some of your comments. Soz about the moan

Love your work Matt So educating and informative

Thank you for this information. I will definitely be changing our wiring to match yours

Hi Matt awesome , I have JJOB on order the 2022 model comes with the Projecta pm 335J and I also have 2 x 280 lithium on order from Paul should I order the optional dc/dc charger , I have a similar set up to the 200 with the Redarc 25 but was under the impression that my rear Anderson was only going to provide power to the second dc/dc charger,but after watching the video I now know what to tell my auto elec thanks

Great video! What if the vehicle has a smart alternator can you still wire direct to 3 way fridge via an isolator or will it not supply enough power?

Thanks for that, you are very informative. I am struggling (in Sydney) with some of the same problem, though no 3 way fridge, all 12v (240v). I want to be able to charge both car and Caravan batteries and use the car batteries to supplement the van power when off grid for longer periods. In my Car (LC200) I have the DCS dual Li battery 260Ah LC200 system and in the van as of Friday Powerpaul Dual Li's 280AH Scouts with Virtron Inverter, Shunt and MPPT for the solar. Plugging into the cars Anderson and hardly anything comes thru, it is connected to the existing Caravan Management system which needs to be changed. The resolution (so far) is to add a DC-DC Charger in the van. The DCS has a Victron Smart Battery Protect SBP-65A which states to connect to it with a max of 65A output. I had hoped to get 100A or as close to the van and not sure whether this is possible, was also looking at a 200A Alternator upgrade. Maybe this is asking too much, or will not work, or there are other options. Wondering whether I should just go with something like a 50 Victron Onion DC-DC and increase the wiring to the van and into the Onion. Luv' your view.

Great video Matt. Would you recommend isolated or non isolated Victron DCDC for caravan setup. Have the BMPro 35 HA but not sure it's up to task of charging Lithium (upgrading from AGM). Shame you're in SA. I'd be calling on you if I was local. Cheers

When/ if we get a new van I’ll be getting in touch for some off grid upgrades and vehicle set ups. Have you/ do you deal with caravan manufactures during the manufacturing process to avoid re wiring stuff like solar, inverter, battery, car setups?

Hey mate I have a brand new van with lithium so I run a anderson plug from start battery to my tow hitch and it doesn't seam to charge my van whilst driving ?? Can you help please

Great explanation. I have exactly the same set up and was wondering if wired to the starter would be better... its obviously a must. Now reference the how... I would think I should be running the 6B&S Anderson cable through an ignition relay near the start battery.. correct?

Why not get rid of the redarc thats in the engine bay and just hook up a isolator of your chosing to that 2nd battery. There is no need for a dc charger when the battery is so close to the alternator.