Landcruiser Double / Triple battery setup (Cross posted - so

Joined: 02 May 2003 Location: Visiting my house

Has anyone tried using Deep Cycle batteries in place of BOTH the standard batteries starting a Diesel Cruiser. I note there are some Deep Cycle (standard wet type - not AGM or similar) that are rated for starting.

Option 2 is to go a really small Odyssey for starting due to their huge CCA and two deep cycles with an isolator.
http://www.odysseybatteries.com/battery/pc925l.htm

I dont see the point in having a large starting battery I only use 5% of. It's a diesel. It starts right away, or it's stuffed.

Thanx
Paul
BNE - '98 HZJ105

_________________
Cruiser HZJ105 Turbo'd Locked & Lifted
BNE Au

Joined: 15 Oct 2006

How did you found out you only use 5% of the power?
I reckon it's a lot more then that champ.
And I think you would be better off with a normal twin battery setup.
Less electrical poop to go wrong in the bush.

Joined: 01 Jan 2007

hhm.. bush.. Razz

Joined: 05 Dec 2003 Location: Brisbane Australia

what happens when you get air in the fuel system and need to crank it over for 5 minutes

then your pooped.

Car manufacturers dont pick batteries at random, there are engineeres that selected the battery with good reason.

Joined: 10 Feb 2004 Location: Munruben/Brisbane

a smaller battery will work

but it life will be drastically decreased

Joined: 02 May 2003 Location: Visiting my house

STIKA wrote:

a smaller battery will work

but it life will be drastically decreased

Based on? Odyssey rates their cells at these levels, one their own spec sheets.

Joined: 15 Oct 2006

Any chance of answering the other questions???
And have you had any luck with this project???

Joined: 02 May 2003 Location: Visiting my house

In process - I'll advise when it's in.

Joined: 07 Aug 2003 Location: Townsville

Go the Odyssey....

Kick ass CCA, very low internal resistance. See a couple of my other posts in recent threads.

Joined: 07 Aug 2003 Location: Townsville

Shadow wrote:

what happens when you get air in the fuel system and need to crank it over for 5 minutes

then your pooped.

Car manufacturers dont pick batteries at random, there are engineeres that selected the battery with good reason.

..............and there are bean counters that tell them where to go.....

Philosophy is great, but the decision is usually based on cost.

Joined: 05 Dec 2003 Location: Brisbane Australia

DAMKIA wrote:

Shadow wrote:

what happens when you get air in the fuel system and need to crank it over for 5 minutes

then your pooped.

Car manufacturers dont pick batteries at random, there are engineeres that selected the battery with good reason.

..............and there are bean counters that tell them where to go.....

Philosophy is great, but the decision is usually based on cost.

so they put a bigger more expensive battery in, instead of a smaller cheaper battery, because the bean counters say so?

He wants to use a smaller battery for his start battery based on the assumption "Its a diesel, it either starts first go or it doesnt"

Joined: 02 May 2003 Location: Visiting my house

Well the PC925 Odyssey is in. Starts the 1HZ no probs at all, cranks faster than the old single N70ZZ which tested as a bare pass on the guys meter. I loaded it with headlights (High), AC, interior fan, spotties, rear demist, no glow plug warm up time - and it cranked for 10secs + till firing with no noticeable slowdown in the slightest. Not bad for a battery 1/3 the size. Have to see how it goes on a -5 winter morning, but looks good so far.

Next is the 2 x Fullriver AGM.

Advantage of this setup is this start battery is small, allowing a triple battery setup with no major under bonnet changes or relocating stuff.

Fullrivers should give about 200a/h useable compared to estimated 60a/h effective from dual Exides.

Joined: 04 Feb 2005 Location: Brisbane

Can you post up a pic of how the 3 batteries are setup in the engine bay ..

Joined: 11 Jan 2004 Location: Adelaide

Shadow wrote:

so they put a bigger more expensive battery in, instead of a smaller cheaper battery, because the bean counters say so?

No, the engineers would probably recommend a small, high quality (=expensive) battery because there are benefits - like Paul has mentioned.

The bean-counters choose the large, crappy battery which is cheaper, because it will save money in the first place.

They also know that most owners will buy a cheap and nasty replacement battery (when the first one dies), so if the engineers had designed around a small battery the owner will buy a cheap and nasty small battery - and guess what will happen?

Joined: 05 Dec 2003 Location: Brisbane Australia

-Scott- wrote:

Shadow wrote:

so they put a bigger more expensive battery in, instead of a smaller cheaper battery, because the bean counters say so?

No, the engineers would probably recommend a small, high quality (=expensive) battery because there are benefits - like Paul has mentioned.

The bean-counters choose the large, crappy battery which is cheaper, because it will save money in the first place.

They also know that most owners will buy a cheap and nasty replacement battery (when the first one dies), so if the engineers had designed around a small battery the owner will buy a cheap and nasty small battery - and guess what will happen?

the only benefit is size, and a lack of change if you can call that a benefit.

There is plenty of room under the bonnet, why spend 3 times as much on a small battery, if you dont have to?

Sure, when you wanna put 3 batteries under the bonnet, then you may need the benefits of an expensive battery.

Joined: 21 Sep 2006 Location: Jabiru

I have just purchased a Supercharge Allrounder MRV50 to use as a starter on my deisel hilux. I now run the same for my aux battery as well as they are 80AH.

Have a look at the website. www.supercharge.com.au They were the best value (AH and $) i could find in terms of the dimensions of the battery as it had to fit into a tight spot.