Solenoids For Dual Battery

[OneMofo]

Was just wondering for those of you who have nowledge in Duel setups, what you think these solenoids are like?? will it be adiquate for a duel set up for my D22??

http://www.ebay.com.au/itm/REDARC-D...ccessories&hash=item2c6c9115b9#ht_1768wt_1161
http://www.ebay.com.au/itm/12v-50AM...=AU_Car_Parts_Accessories&hash=item3a818b0d31

i have read around and seen a few suggestions of Redarc etc but, no one that i can find has suggested more specific info on the finer points of a duel set up. (especially for us who are somewhat auto electrically retarded). ie Fuse amperage to meet the correct solenoid amperage with the right guage wires etc etc.
I ask this as im looking at the above mentioned solenoid with the above mentioned fuses, and im sure there are others around who could also use the information. Is there a write up or a how to i am missing??
(a diagram would be awesome)

Thanks for you input in advance.

 

[albatross]

I run a sbi12 but i only paid 85 bucks for it! Works a treat! Redarc support online and jn the call center are fantastic too!

 

[Jaybird]

Some good info here,
http://www.fridge-and-solar.net/dual_bat.htm
No affiliation to this site just looking at buying

 

[Old.Tony]

The Redarc unit will isolate and protect your starter from overdischarging by auxiliaries that are drawing from the second battery. It's a popular way of hooking things up.

 

[shaggy]

Go the Redarc.Have got one in my nav for the dual battery setup.All good

Shane

 

[sparra04]

i can sell you a 2nd hand redarc for $50

 

[OneMofo]

Jaybird, thanks thats great informatuion, just what iv been looking for, very insitful. think i may go with this system.

 

[OneMofo]

Sparra what tyoe is the redarc?? amperage etc

 

[sparra04]

same as the one you gave link to
sb112

 

[Navmania]

Don't the modern day alternators measure temperature so they can back of the voltage to save on fuel. I know that the prado's do this. the voltage will drop bellow 12v after a certain temp, that is why the Redarc BCDC is used, it maintains over 14v to the AUX battery even once the alternator drops its charge voltage to the main battery. I don't know for sure if this happens to the Navara but I know I am getting 14 plus volts to my Aux battery while its charging then it manages the voltage so it doesn't overcharge and damage the Aux Battery once its charged. I am using optima yellow tops for both my main and aux battery and this system works well for me. I think its easier to setup to as the cables don't have to be big.

cheers

 

[Old.Tony]

Very new Navaras do that, and people have had to buy a particular model of the BCDC charger to cope with it.