Hi guys,

I am setting up a dual battery system in the car to run my fridge. Currently the plan is to run a Thumper 120AH AGM battery in a Projecta BPE330 battery box. All up the battery + battery box gonna be approx $350.

Now comes the tricky point: charging.... I can run an ABR VSR about $75 or a Projecta DC 20 dc to dc charger about $195. The sparky is happy to install all this for about $200 (includes cables, lugs, Anderson plug etc)....

Will the VSR destroy the battery? Is it necessary to go the dc dc charger or will the current from the alternator through the VSR be ok to charge the battery.....

BTW the car is a brand new Mitsubishi Challenger if that makes any difference.... I am preparing it for trips to places like Uluru and The Cape via the easy way, not the extremest roads...

Thanks for your help in advance.

Cheers
Mani