Advice on a simple dual battery system

Submitted: Thursday, Jan 07, 2021 at 14:56
ThreadID: 140949 Views:13976 Replies:12 FollowUps:43
This Thread has been Archived
I want to setup a simple dual battery system in my vehicle mainly to power a 12V fridge while I am travelling. I have an Anderson plug in the rear of my wagon connected to the starter battery which I connect the fridge to when I am driving. When I stop the car, I remove the plug and connect to an Anderson plug in an auxiliary AGM battery. I want to automate this process so that:

A) I don't have to change battery connections when I stop and start the vehicle
B) The auxiliary AGM battery remains at 100% state of charge via the alternator while the engine is running
C) There is no risk of draining the starter battery

I believe that what I need is a DC-DC charger but I am having trouble sifting through all of the available information to figure out which is the best product for my situation. It doesn't have to be mounted in the rear of my vehicle. I am happy with a portable option. My batteries and appliances all have Anderson connections so ideally I would like something off the shelf which is compatible with this. I don't use solar very often but would like a solar option in case I need it at some stage. I have looked at DC-DC chargers ranging from the Powertech product from Jaycar at $219 to Redarc products at > $500. Any assistance with choosing a suitable product would be appreciated.
Back Expand Un-Read 0 Moderator

Sponsored Links