dual battery installation

Sorry bout that:

questions are:

1.

What extra gear do you have under the bonnet? Numerous people fit them under there wth showers, etc in their trucks. you have to move crap round, but it can be done.

Hi mate. I have a dual battery set up in my GQ dual fuel. Yes the converter sits where the second battery would like to be. Choices are as follows.............go to an lpg place and get them to move the converter.(preferred option and surely better than a battery in the car) Or do what the guy i got my car from did,and thats put a smaller 55amp d/cycle right up against the firewall on the passenger side.There is enough room for this just. I can email a pic to u if u want. I had this battery isolated but now run it parallel with the cranker so fridge running time is extended. Fridge cuts out before i can't start and if for some reason i can't start then i have my jump start pack.

G'day Marc,
The others have answered the original question satisfactorily I guess; but nobody has answered your Q about how to wire it up.

Now, unless you intend to use one of those HUGE red key-type switches to turn the aux battery on/off, you are going to have to use a solenoid of some sort. You don't have to go for the bells & whistles electronic types that ensure the main battery is fully topped up after starting before it switches over to charge the 2nd battery.

Instead, why not use the system I use. It comprises a simple solenoid which I decide when it should be switched on or off (same as what you propose). The main difference is that the switch I use is a simple (small) on/off switch that turns the solenoid on or off. If you do end up deciding to locate the battery under the seat or elsewhere in the cabin area, you are going to have to be very careful about how you route the heavy cabling to/from the solenoid and main battery. Especially at the point/s where the cable will pass though the firewall (or up through the floor pan if that is how you decide). You are going to have very high levels of amps going through that "+" cable and any shorts will more than likely end up in a fire.

Cheers

Roachie

Right, I've got a 95EFI duel fuel, 2 N70zzs opposite each other, home made ARB type second batt tray and a modified air cleaner. Move your coil a bit and slightly bend your air con pipes and will all go in...a bit tight but it will go

I answer to your original question.

I believe a manual switch would be fine. But if you're going to the trouble of running the cabling back, why not fit a Redarc or similar?

AGM Batteries do not get hot whilst charging. They apparently don't like to be in a hot environment such as in an engine bay, not sure if this is myth.

If you call the bloke at Federal Batteries in Sydney on his 13.... number, he will be able to give you the good oil.

The other advantage of it in the car if, if you hook it to the cable via an Anderson plug, you have a portable power supply.

Cheers,

Jim.