AGM battery

Heaps of info available on atteries if you do a search. If you plan on keeping it the cabin, I'd certainly go the AGM. Also, it sounds like you won't have it connected for charging while driving. If that is correct, it is another big tick for the AGM. They hold charge much better than a standard vented battery.
That's my view.

Have a look at this thread
www.exploroz.com/Forum/View.asp?ForumQID=32186

Mike

AGM is the way to go, sealed and spill proof.

The other replies also mention the standby qualities of the battery, great.

If dollars allow go AGM.

Regards Derek.

Jayse,

Have a look at Optima batteries. They're a military spec AGM, spiral wound DUAL function battery. I've used several of 'em over the last few years in various vehicles. They're very strange shape for a battery.

They are a true deep cycle, sealed AGM with an amazing Cold Cranking Amps (CCA) for their size. Very heat tolerant. I have one ( 2 actually - the other will be my fridge battery) here that's being fitted in to my Nissan Patrol that is currently being converted to a Chev V8 diesel engine. It's smaller than a standard N70ZLL in physical size but has 750 CCA as opposed to around 550 CCA for a N70ZLL, and 870 Max Cranking Amps (MCA). So it's not only a deep cycle for your fridge it's also a darn good cranking battery that's designed for Deep Cycle and Cranking.

But they're not cheap.

Bilbo

JB,

As others have recommended, an AGM Deep Cycle Battery is the best to use for the fridge and other 12 volt gizmos.

But, for the spotties, they are better left to run off the primary battery. You would (should) be running the engine whilst using the spots and therefore they don't need to be powered from the auxiliary. This is best left for the fridge and other low drain devices.

Similarly, if you had an electric winch, this should also be powered from the primary battery, where the engine is running while it's being used.

Anyone got any recommendations for who has the best deal in Melbourne for the folowing:

2 x 200-250AH AGM Batteries
2 x 100-105AH AGM Batteries
1 x Xantrex TrueCharge 40i 40amp charger
1 x Xantrex TrueCharger Battery Display Panel \

I say Melbourne because I think the freight from interstate would be a killer. This is going into a boat to replace some smaller Gel batteries and an 8mp charger.