Fullriver dc120-12 battery

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oul053
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Fullriver dc120-12 battery

Unread post by oul053 » March 24th, 2011, 6:45 pm

Hi there I have recently bought a fullriver dc120-12 battery it will b installed in a pa challenger as a second battery I will b keeping the standard n70 battery as a starting battery. I need to know if a redarc sb12 isolator will work with this setup or do I need a different dual battery controller? Thanks

muddy deo
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Re: Fullriver dc120-12 battery

Unread post by muddy deo » March 27th, 2011, 12:24 pm

i'm not familar with that isolator, but basically any dual battery isolator will work with basically any 2 batteries (in normal circumstances). if you want the most out of your second battery though, i recomend a DC-DC charger/isolator.

i also have the fullriver 120AH, very good battery

whizzo
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Re: Fullriver dc120-12 battery

Unread post by whizzo » April 5th, 2011, 9:11 am

A real issue with the AGM batter may be the maximum permissable charge rate.

check the spec's the existing system may be capable of delivering nore then the max rec charge rate.

this is one of the reasons most of the DC to DC chargers only output arround 20 amps.

cheers

oul053
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Re: Fullriver dc120-12 battery

Unread post by oul053 » April 5th, 2011, 1:28 pm

Ahh ok thanks!

Fattz4x4
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Re: Fullriver dc120-12 battery

Unread post by Fattz4x4 » May 2nd, 2011, 12:25 am

hey guys i was just looking at the fullriver 120 A/H deep cycle on the net 2nite ,and well had a couple of questions about it:
1- is it any good? already been answered here for me...sweet...
2: what accessories do you run off it and how long for?( on average )
thanks heaps in advance
matt

whizzo
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Re: Fullriver dc120-12 battery

Unread post by whizzo » May 2nd, 2011, 11:30 am

How ling is a piece of string and how many things can you poke with a forky stick?

cheers

Fattz4x4
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Re: Fullriver dc120-12 battery

Unread post by Fattz4x4 » May 2nd, 2011, 1:46 pm

lol whizzo .fair call...it was early alright

oul053
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Re: Fullriver dc120-12 battery

Unread post by oul053 » May 2nd, 2011, 5:22 pm

It really depends how power Hungary your acc are? I was just running a 30lt fridge off it for 5 days with minimum recharge on the battery and it was fine. U need to work out how much power your acc will use per hr and then work out how long u would normally intend on staying in 1 spot without recharging aswell. That will let your know your amps per hr and how long that battery 'could' last.

bungie
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Re: Fullriver dc120-12 battery

Unread post by bungie » May 2nd, 2011, 5:42 pm

thats the setup i have, had no problems with it
short term satellite phone rental
http://iridium-satellite-phone-rental.com

Shaker4x4
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Re: Fullriver dc120-12 battery

Unread post by Shaker4x4 » May 2nd, 2011, 6:08 pm

For longevity, your battery should only discharge to 11.2v minimum, thereafter, they ramp down signifiganty. Depending on your amp/hr draw over each non-charging period will depend on the size battery you need + a little to spare if you can afford the cash and carry the extra weight. There are two batteries in the size you mention. I'll post the specifics for each plus the main link to the DC series so you can compare.

I chose 180ah running - .7ah fridge (average is 25deg ambient temp), 3 x LED dome lights - .48ah ea, 1 x 12v shower - yeah ah, 1 x 340w max sound system - ah just went out the window but won't run it flat out and the audio head is not in the loop as MP3 player or Phone does the work, 300w inverter for charging equipment and running Christmas lights when the season comes around (I don't want to talk about it.) The system is Solar/hybrid charge but is independent from the vehicle long term if need be. The large capacity battery allows for 'buffing' space on bad days when I can't obtain enough solar energy.

Right click and open link in new tab or click back, to the forum when your done:-

Fullriver DC series

Fullriver DC120 - 12A

Fullriver DC120 - 12B

The question remains, where is the second battery placed? If under the bonnet, what you first stated with the redarc sb12 isolator will be fine. You can have them factory adjusted to the specified cut-off. This set up is good for fast charge, but like muddy said, if you want the most out of your battery, use a DC-DC charger as this will top up the battery 100% like my system does instead of 85% from the alternator. A full battery is a happy battery (if they had feelings ^-^.) With a DC-DC charger, you can have it turn on when your ignition turns on, but running it constantly running off a standard cranking battery with the engine turned off is a very bad idea. Downside is slow charge, but in my instance, it suits my set up. Look to Redarc's BCDC charger and see if they release that 40amp charger yet? You can mount it under the dash inside the vehicle and run the wires back through the firewall. A bit faster 100% charge. Very expensive though. I think they are putting MPPT Solar regulators in them as well so great hybrid charger. You will never beat the speed or an alternator charge though, just you'll have less power to play with from a battery not fully maintained and shorter battery life. You can however buy products on the market to better manage this. It's a mine field.

Tritonic
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Re: Fullriver dc120-12 battery

Unread post by Tritonic » September 13th, 2014, 7:52 am

I am setting up a dual battery system for my camper (ute canopy setup).

The setup has a low Dry Weight - so I can afford to burn a chunk of it on battery lead...

The company is recommending

2 x 6VT FullRiver units paralleled to deliver 12VTS

The units I am considering are either the DC250-6 ... or even the DC335-6

Once configured to 12vts - I will have 250a/hrs - or with the other unit 335a/hrs at my disposal.

The weight total is either 69kgs (250ahrs); or 96kgs (ouch!) (335ahrs)

I am running a 90ltr National Lagona; lots of LEDs including 'flood lighting'; Sat dish and TV; 12vt blankets in winter; maybe might have a 240vt rice cooker and/or microwave in the future? etc - and generally have the attitude that "the more capacity the better" (in terms of back up, and redundancy etc...). Plus I 'hate' generators (and do not own one).

The costs and weight (kgs) are virtually identical for achieving this sort of a/hr capacity from 12vt batteries (vs) paralleled 6vt batteries - except that the 6vt concept does give me more amp bang for your buck...

So my question and main concern relates to what happens if one of the 6vt batteries dies. I am in darkness!

The installer says that its not a big worry because the FullRiver is a great product and is very dependable... I am thinking it may NOT be an issue because I am not doing long and big trips to the cape or Kimberly (yet)... Just places like Fraser etc..

I also think that when I do an extended outback remote trip in the future - at that time I could put in a 3rd, (12vt) battery as the insurance policy.

So it boils down to "how doomed" might I be - (at places like Fraser etc) totally depending on 2 x 6vt batteries (vs) 2 x 12vt batteries??

vk3aif
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Re: Fullriver dc120-12 battery

Unread post by vk3aif » September 13th, 2014, 10:37 pm

The way I look at it is thus:-

Batteries fail for various reasons and it is common for one cell in a battery to give up the ghost while the remaining ones are still quite good so if you use 2 x 6V batteries and a cell fails you are high and dry the same goes for 1 large capacity 12 V one.

On the other hand if you were to use 2 x 12V batteries you might think you have some redundancy all be it with reduced capacity but do you? If a cell in one of the batteries was to go short circuit it will drain the remaining good one probably before you realise that you have a problem. If you were to determine which one was crook and take it out of circuit before the good one was damaged you could continue but, as mentioned above, with reduced capacity.

Another thing to watch out for is I would not recommend using batteries of different types in parallel as they may well have different end voltages and the one with the lowest could drain either partially or totally the other one.

I hope this all makes sense?

What would I do you ask? I would probably go for 2 or more 12V ones to make up the required capacity. Others might have other legitimate ideas so take them all on board in order to make the best informed decision you can before parting with your hard earned$$.

P.S. Many deep cycle batteries are not made to handle rough treatment and could fail early if subjected to mechanical abuse, it might be worth looking at marine types as in that enviroment they get a pounding.

Tritonic
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Re: Fullriver dc120-12 battery

Unread post by Tritonic » September 14th, 2014, 12:28 am

Good advice!...

These bits I had not thought about...
vk3aif wrote:Batteries fail for various reasons and it is common for one cell in a battery to give up the ghost while the remaining ones are still quite good so if you use 2 x 6V batteries and a cell fails you are high and dry the same goes for 1 large capacity 12 V one.
These bits I would not have a lot of clue about.....
vk3aif wrote:If a cell in one of the batteries was to go short circuit it will drain the remaining good one probably before you realise that you have a problem. If you were to determine which one was crook and take it out of circuit before the good one was damaged you could continue but, as mentioned above, with reduced capacity.
So the whole thing is a bit of a puzzle...

The FullRivers were 'highly recommended' by a Solar RV specialist... so I hope the batteries will take the physical thumping off road...

I am mounting them in custom made checkerplate bins that will be pop riveted under the tray deck... I cant recall the name of the pop rivets (but they take (I think?) 300kgs of force each - and they are using 4 per bin... They are applied with an "air gun thing"...

But that said - whom amongst us is a structural engineer type who 'can calculate' the real weight inside the bins / on the rivets etc (when say a 335ahr 48kg battery in being thumped bashed around in the bin off road...??

There may apply a multiplier factor or 5 or 10 to one ... ( = 250kgs or 500kgs of 'force' on the bin and rivets) ??

vk3aif
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Re: Fullriver dc120-12 battery

Unread post by vk3aif » September 14th, 2014, 6:54 pm

And is the shock load shared equally between all the rivets? Probably not. I would think that a momentry shock load of 10G is immenently possible when you suspension bottoms out. I seem to recall that gas tank mountings have to be engineered to 20G but that is probably factored for a collision?

It might be worth putting some steel straps around you bin and bolting them to something substantial as a belt and braces solution just in case?

There is a picture of my aux battery tray my No2 son and I made for under tray mounting on here somewhere if you were to search for it. It hasn't fallen off yet but the battery is only 100 od AH so nowhere as heavy as what you are proposing.

cbsos4u
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Re: Fullriver dc120-12 battery

Unread post by cbsos4u » July 1st, 2018, 7:15 am

Hi! In regards to the use of POP rivets, I would sooner use good olds nuts and bolts - in the case of a need for removal and reuse on the road, you will have a spanner or socket set, but you most likely won't carry a rivet gun or spare rivets. If access to using a nut on the back is not possible, then the use of a RIVNUT is a great idea - similar in action as a rivet but using a specific application gun while the rivet has a threaded portion incorporated into its body so that when the rivet is compressed the threaded portion is on the other side of the panel allowing your bolt to screw down through it.
The strength is not in the few rivets you are using, it is in the amount of CLAMPING pressure applied to the faces of the panels, and the friction between these faces holds the weight of the batteries and stops them from moving. Also consider the SHOCK loading which will differ depending on the mounting location. DO NOT use the battery box as your earth mount, ALWAYS bolt through the chassis and use clean surfaces each with heavy duty STAR washers which bite into the surface and then cover the ends with grease or vaseline or Lanoguard grease to protect against corrosion.

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