Dual Batteries for dummies

[taresk]

If you can secure them (with some kind of tray to catch any accidental leakage) and rig up external venting as you said, they should be ok, although personally I'd put them out of the cab.

[Richolux150]

Ctek cut in is 13.2 volts on the crank battery........cut out is 12.8 volts from crank
https://www.baintech.com.au/why-is-my-c ... -batteries

[banksy]

You have a keen eye Banksy. They are indeed Fiamm batteries. I purchased ten, second hand and ended up using eight. They were out of a Telstra tower.
It looks like they may have some venting hole in between the terminals. (You can see it in the photo)
I could put some 1/4" water filter hose in it and vent to the outside. I would have to make up some checker plate guard and some proper tie downs if I mounted them there.

Mr kick ass sell some exactly the same dimensions but he calls his 120Ah
So what do you think, safe to put behind the back seat. ???
Or better under the tray. I would have to make up some sort of battery tray if I put them under the tray.

Personally i would go under the tray if you have an ally back for a few reasons primary one being they weigh 32kg each.
In the event of a acco trying to restrain 32kg will take some fixing through the floor [fuel tank may be in the way], oh and i just reread the specs 2300 amps shorted = fireworks & burnt down truck.
Just be aware they also have a max charge rate of 25 amps so you need limit charge by running a dc-dc system also.
in saying that the one i ran years ago was off a vsr as there was no such thing as a dc-dc system back then often seen it absorbing 50+ amps when 1/2 flat, it did concern me that it would fry the alternator.
And i would just put 1 battery in and run some solar for weight reasons.

[facemir]

Thanks for that reply. I have a std tray with a canopy, and was looking for places underneath where I could put it. I saw that just above the spare tyre is about the only place, available and that picture above confirms it. I was thinking of laying the battery on its side. It will have a Ctek D250s Dc-Dc charger. Or maybe a RedArc BMS.
But if I put it under there by the spare tyre, I still have the dilemma of what to do with the spare room room behind the back seat.

[banksy]

I still have the dilemma of what to do with the spare room room behind the back seat.

compressor, wet weather gear, most importantly reserve P155 your mates cant find

In all seriousness just remember that you are building the system to suit that odd size-shape battery, when it falls over its retro time or source the same size battery.
But they are a top battery, i now have a full river 120ah and i suspect the fiamm would sh1t all over it.

[LocalFart]

Ctek cut in is 13.2 volts on the crank battery........cut out is 12.8 volts from crank
https://www.baintech.com.au/why-is-my-c ... -batteries

Thanks Richo,
Weird how they don't have that listed on the website.

[Hilux_Dave]

Hey all,
Just so i am clear, the CTEK D250S DUAL has a built in isolater so there is no need for the seperate solonoid/isolater correct?

Does the the D250s allow the batteries to be put in parralel so as to jump start and give extra power to the batter when winching?

Thanks all.

[aandy]

Hey all,
Just so i am clear, the CTEK D250S DUAL has a built in isolater so there is no need for the seperate solonoid/isolater correct?

Does the the D250s allow the batteries to be put in parralel so as to jump start and give extra power to the batter when winching?

Thanks all.

You are correct, you do not need a separate isolator with the d250s.
No it cannot link the batteries together, do you really need to?
I have had the d250s for 5 years and never had a need to link batteries together, however I do carry jumper cables in the car.
Have not had any trouble winching on the start battery alone with the engine running.

[Hilux_Dave]

Ok thanks aandy,

Does anyone know the largest dimenesions of a battery that can fit in the engine bay?

[LocalFart]

I've got a 100ah in there, fits nice and snug.

[Hilux_Dave]

[quote="LocalFart"]I've got a 100ah in there, fits nice and snug.

Do you know what model you battery is?
I just want to checkou the dimensions, i was hoping to go a 120ah.

[LocalFart]

N70T I think

[dinomike20]

Complete newbie to the Hilux world and electricals, so please excuse my stupid questions... after spending the last hour or so on this thread I'm 12 pages in and only getting more confused about all the options!

I want to add a second battery to power a fridge, charge phones at night and some extra lights etc. I plan on hooking up a solar panel also.

I've figured I need a battery tray, DC-DC charger and obviously the actual battery, but I'm a bit confused about fuses... are these needed, where do they need to be installed, do I need a single fuse or a fuse block? And also wiring - what gauge wiring do I need for everything, do I need better wire to run to the fridge in the back tray compared to short runs under the bonnet?

And anything else I need to consider? Cheers guys!

[TOYZX]

Ya probably best go talk to a sparky in person with all those questions but this should answer a few. This is the redarc system i fit on a regular basis. It all depends on what charger you buy, this will dictate your wiring needs.

Sent from my SM-N920I using Tapatalk

[dinomike20]

Ya probably best go talk to a sparky in person with all those questions but this should answer a few. This is the redarc system i fit on a regular basis. It all depends on what charger you buy, this will dictate your wiring needs.

Sent from my SM-N920I using Tapatalk

Perfect, thanks TOYZX!

[Marsh]

Has anyone used an Ultimate UL110-VO27 Deep Cycle Battery (AGM) before? I have an ARB battery tray.

http://www.everybattery.com.au/proddeta ... UL110-VO27

I'm putting together my dual battery system and this AGM can be fitted under the bonnet apparently... Would be keen to hear any experiences.

[TOYZX]

Pretty sure arb battery trays are rated for 25kg max! I'd double check, could be an issue! That battery weighs nearly 30kg.

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[Marsh]

Pretty sure arb battery trays are rated for 25kg max! I'd double check, could be an issue! That battery weighs nearly 30kg.

Sent from my SM-N920I using Tapatalk

Hmm quite a few people seem to be putting heavy AGMs in... they all appear to be in excess of 25kg. I might have to choose a different battery type.

Has any one used the Century Marine Pro 730? 25kg and 100AH. http://www.batteriesdirect.com.au/mobile/shop/product/4404/n70zm.html

Any other suggestions?

UPDATE: Just ordered a Supercharge Allrounder MRV70. http://www.supercharge.com.au/allrounder-4wd-mrv70.html

Seemed to tick all the boxes: weight, size, under-bonnet suitability, amp hours and price (I got it for $189 same day delivery from a local supplier).

[Jayce]

I have a Redarc smart solenoid linking my dual batteries together.
When i put it in a couple of years ago i never connected up the blue linking wire. I now want to connect it up so i can jump the main from the aux battery with a momentary switch in the cab.

should i run a fuse in this line or do i just connect wires straight to the switch in the cab?

What size wire would be best and is there a switch that is more suited to this rather that the standard spott style switch?

Cheers Jayce

[KieranR]

Hi,
this is all new to me, but im having a go at installing a dual battery setup in my hilux this week. but i have a couple of questions im looking at answers for please.

1) my battery tray specs say that the tray rating is not to exceed 24kg, my aux battery i have is 28.8kg, is this going to be a problem with the battery weighing more than recommended weight limit on the tray specs, I've had a quick look and haven't seen any 100 A/H batteries locally less than 24kg, although i haven't looked real hard

2) is it advisable to run the positive lead from the Aux battery to a fuse block and then run my accessories off that instead of loading up the terminals on the battery its self?

3) running the power to the tub for the fridge (SR5 2015 hilux), should i run it along the chassis rails, and then up inside the wheel arch, drill hole in the tub and mount plug for fridge to plug into (im looking for ideas here on how to run power to the fridge without it looking ugly. i dont have draws or anything like that in the tray.

Thank you
Kieran