BUILDING a CUSTOM, one of a kind DUAL BATTERY set up! TB48 Nissan Patrol GU build
Part nine of my Nissan TB48 GU Patrol build, we make a dual battery system!
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Just be mindful with the dual battery plugged in the vehicle now that you have a lithium battery as the starter battery your Victron charger will start drawing power immediately as the voltage setting was assuming a lead acid base voltage 12-12.8V drawing from the starter battery self isolating until your alternator comes on at 13.5-14.6V and above, you may need to ensure a start stop relay or isolator to prevent draining your starter as the resting voltage of the Lithium will be at or above 13.6V
Doesn’t the Victron dc to dc have a smart engine on detection sequence? I thought it measured the voltage every minute or so to detect if the engine was on thus shutting itself down if it notices engine is now off and starter battery not charging? Might be confused but I thought that was the whole point of going for a smart dc to dc charger.
@@duncanbrown7160 Yes, from Victron info "the default setting (13.3V) is based on generic smart alternator setup. Most smart alternators will generate 13.5V when the engine is running, and regular alternators will normally generate >14V. In an application with a regular alternator the restart level can therefore be set to a higher value, e.g. 14V." "Shutdown level: The default setting is 13.1V. this creates a hysteresis between the restart level and prevents excess discharge of the starter battery." Notice in my comment "the resting voltage of the Lithium will be at or above 13.6V " this is already above the default setting of 13.3V to start/restart and keep the charger on. So even during startup as lithium batteries maintain a steady voltage and strong current there will be no major dip or ramping of voltage required to shutoff the charger. Tyler may have to check what his resting voltage on his starter battery is and he may be able to adjust the Victron charger trigger voltage, but as my own Lithium battery tends to hold a resting voltage of 14.3 or slightly above. this may be too high for the Victrons settings
This is brilliant. It’s now my go to design for when I’m at the “dual battery” place in my list of upgrades.
🤣🤣🤣 your bloopers crack me up you are so composed how do you not loose your shit
Nice setup mate, but I'd definitely strap it down, a head-on collision above 80km I guarantee it will plow through the seat. Better to be safe than sorry!
A fully portable battery box is great way to go. Makes camping easy. I would of added the solar controller though. Great set up.
Very cool. Love the added advantage of being about to camp away from the car if you want and have power so you can run the fridge, lights, charge phones etc. Plug it back in when you are moving onto the next stop and it will be charged up in no time. I know most people camp next to the car, but you never know what camping spot you may come across and having the option to pick it up so easily sounds great to me.
A VERY well thought out battery box, well done guys.
Love the battery box idea 😍
Cool little box. I like that design
Thats awesome mate very nice. I like how its removable
Great set up Tyler.
nice video glad my mate put me on to you. keep the videos coming. nice to see different way to do things than your everyday things off the shelf
Thanks mate!
Hey Tyler,top little setup there well done,should work really well.Thanks mate😎
Good shit Tyler you gotta be happy with that, very cool 👍✌
Very nice system mate!! Pretty smart! Congrats!
Thanks!
Kinda like a diy bluetti, I like the idea of being able to move it from car to car, even a bit of back up if power goes out at home
. Portability is feature I like best. I've got a standard battery box with a 95amp lead acid, it serves me well. I use it in my Prado, a mates car and it's great when there's a blackout to charge phone, lights, I've even used it to run a 12v shower during said blackout. Great content buddy👍👍
Awesome content mate. Victron and Fusion Lithium are the only brands I'm using now and haven't had a single issue. Happy Wheeling !!
Good setup. I have a 28l waceo that fits behind the 3rd row of my 200 series
Nice mate, top idea, can use it anywhere now 👍👍
For sure mate!
Good idea but just 1 improvement, Electronic RCD GPO for safety and the vent holes will be blocked between seat and rear door. Nice project that is doable.
Well done mate very good and very different 👍🏴
Thanks 👍
Smick set up mate but I did notice a couple of things the lid on the box has no over extend cable so if you drop the lid open it may tear the hinges off ! The other is your vent holes in the box for cooling are blocked by the seat on one side and the door on the other Very neat and tidy job tho well done mate now for some R&D to test it please let us know how it goes 😊
Good setup. Bonus you can swap it over to the gq as well.
Yep that's what I was thinking, can run it in both 👌
Nice set up.
Thanks!
Love you’re bloopers at the end 🤣😂
Thanks 😁😂
Nice
thanks for the video mate! love watching these how to.. especially because I have a patrol aswell.. keep it simple stupid kinda approach
Glad you like them!
Great idea. I run a homemade portable lithium battery box as well mate. Very handy. 👍🍺❤️🇦🇺
For sure mate!
Love the setup Tyler !!! I use the Victron gear in my Patrol and it never let me down. As for space, have you looked at/seen the Horizon Touring Rear Storage box for the GU (Passenger side)? It makes use of the otherwise very wasted space in the rear left side cavity. I have my battery and Victron charger in there and it is by far one of the best mods ive done on the Patrol. It would've been perfect for retaining 7 seats AND the space you used for your battery box.
Cheers mate! I did end up seeing that but for some reason I thought it got in the way of the back seat but I guess I was wrong
Hi Tyler, really nice setup. Is it possible to get a wiring diagram?
That’s a big box!!! bit late now, but did you consider a slim battery and fit everything under the middle row seats? From memory there’s quiet a bit of room?
Another great vid, loving your content! Wondering where you got your barn door table? We’ve been looking everywhere. Thanks 👍
Cheers! From here platypusoffroad.com.au
Great setup Tyler. Ask your auto electrician to connect the starter battery input to the smart shunt voltage input 2 as well. I tapped it off from the DCDC input terminal. Nathan from XploringOZ has an episode " LITHIUM is OUT for now... " where he reveals his experience with a lithium starter battery in a dual battery system. You may experience your starter battery going flat or significantly drained as lithium batteries don't have sagging terminal voltages like lead acid batteries. This variation is what the DCDC uses to intelligently stop drawing current when the start battery isn't receiving charge from the alternator. An ignition triggered high current isolation relay could solve this issue.
Cheers mate!
The victron has an ignition switch feature which you can hook up to only charge when the ignition is on. It comes with a bridging wire as standard but you just need to run a small cable to the ignition switch.
I guess you kinda need it given the fact you need to monitor your battery for charging purposes. I'm currently deciding if i need a battery monitor or a volt guage. do you think for someone who uses the car 4x4ing + camping once a month (if that) requires a battery monitor or should I just stick to a volt guag and watch my volts. I feel knowing the amps in/output will be handy, though does the average Joe really need it? 🤔 dual battery monitor $250-35p redarc volt guage $170-200
Did you consider a go block .
Old mates eye looks so red
Really enjoy your videos and their authenticity! Not sure if this is already been mentioned but have you considered the bluetti all in one system (it’s got a lithium battery pure sine wave inverter etc and it’s quite portable with lots of options for charging stuff)…?
Cheers mate! Yeah something like that could have worked
Nice set up, as other have mentioned go for the victron solar controller. The GU is just about there in terms of set up ?? I'm looking forward to the GQ mods👍😊.
Cheers mate! Yeah pretty set up now!
Great setup and great idea about the removablle battery box. My only concern is the vent holes in the box to reduce heat buildup seem to be obstructed by the seat and rear door, so would be almost useless. Has this been an issue or have you thought about it?
Hasn't been an issue, and when I use most of the system like inverter and lights etc im pulled up at camp with the rear door open
Good one Tyler. 👍 It looks like there is still room in the battery box to fit the Victron Solar Controller. It's always good to have an option of being able to connect solar to your auxiliary battery. BTW, do you know what they've done to the lithium battery to make it suitable for under bonnet installation?
Ditto on knowing more about the battery. I'm interested in fitting a lithium starter battery due to the weight saving, but keen to know how it performs or will last under the bonnet.
Cheers mate, not 100% sure to be honest! Worked great the last 4 months since its been in though
Nice. But vents are againts door and seat... When door is closed.... 😄😬
Yeah realised that haha but when im using it most for running camp lights and inverter etc it will be at camp when door is open anyways
Love the set up, but when you close the car door, those nice big vent holes get closed up anyway?
Yeah they mostly get covered but I generally only use it with the inverter and lights etc when I'm at camp
Hi Tyler, What brand of those interior lights and where did you get them from Thanks.
They are Drifta Stockton ones mate, can get them on their website
Loving the build Tyler. Top shelf! Have been tossing up the full conversion to lithium in my Patrol, but wondering how the cracking battery goes with winching? Can lithium handle the required amps? I also have a Runva and they can pull 400+ amps under serious load.
Don’t you always run your winch of your starting battery ?
Cheers mate! Yeah its been great so far, used the winch quite a few times. I cant remember the figures but the lithium has much more ability to handle power then the standard battery I had
@@TylerThompson90 cheers 👍
@@michealedwards7849 I do Michael. I was wondering if a lithium starting/cranking battery can handle the amp draw under heavy winching.
@@wadefuller7283 you can buy lithium crank/winch batteries (expensive end of the range) not sure what’s the difference to a “normal” lithium battery. Some have a reserve, so you can just run 1 battery. If you manage to run it flat, open the bonnet push a button on the battery and there’s enough power to start -> that’s their marketing spell, I haven’t had one of them yet.
Cost, or another freeby?
So are you saying when you use it as a normal daily drive you would take the whole box out or would you leave it in permanently?
Yeah I take it out for daily driving mate
We have found room on a 4.8 Patrol under the Bonnet?
Yeah okay, we couldn't find a good spot and can't put a lithium (non starter one) under the bonnet anyways nor the inverter
@@TylerThompson90 there are kits that you put a battery tray infront of the main battery, and you need to relocate the windscreen washer bottle to the firewall, can only fit a 90ah battery like in your vid though
Hi Tyler are Hastings going to make and sell the battery box complete
Yep they can make them if you contact them, they would make on demand though, they wouldn't have them sitting there ready to buy
@@TylerThompson90 thanks mate for getting back to me keep up the great work love watching your videos
i really like that i guess hes not selling them? lol great job
Yeah they can definitely make them mate if you chat to Hastings auto electrical
Hate to be a downer But as per AS3000 no 240 volt outlets can be facing up and must have earth leakage device protecting
No, that at rule doesn't apply when the 240v gpo is supplied solely by a portable inverter. Different story if you have it setup to take 240v plug-in mains connection though.
Checkmate.
How much?
hrmm well.. it's good for portability. something to think about.. my Patrol has a different setup not sure how practical the space would be . glad it's going to work for your setup tho .. costs ?
lithium starter 1400cca would be good for winching too
"What is in the box?" A battery. The question is, is it alive or dead.
Nice idea but, most of those air holes are now covered by the seat and door trim. Just saying.
Yeah I did think that haha but most of its use is when I am at camp (running lights and charging camera gear through inverter) which is when it will need more air and back door is open. When im driving its only running the fridge and doesn't create much heat
@@TylerThompson90 no probs then, looks good though.
i think you should strap it down, think about what would happen with a roll over at speed. You don't want big heavy items free.
Yeah it cant go anywhere though when its tucked in behind the seat as the seat is on an angle backwards so the battery cant actually go up. The whole seat would have to get torn out before the battery box could go anywhere
As was stated in the video. 👂
@@TylerThompson90 but it will unless its tied down, you have no idea of the forces.
@@qksmith Yes exactly, it can slide to the drivers side and out. One accident i went to (not far from where Tyler lives) a steel cantilever toolbox full of tools in the boot hit the boot lit hard enough to sheer the boot latch off. The whole thing was ejected from the boot and tools were scattered about 40 meters from the impact. I'd be bolting the box down if i was Tyler.
i would rather strap it down that put it though the back of a family members head.
It's a shame because now you have no space left on the rear for storage and you can't put anything other than a camera on top of that box. Should have just used the Horizon Touring rear wing box for the battery. Can't you charge camera gear on 12V? Does every KZheadr really need a massive inverter? How can you take 6 people camping with no space for bags, chairs, food or gear?