jgpoirier
Adventurer
I run a triple battery setup now, 1 main, 1st aux in engine bay, 2nd aux fitted in my canopy drawer system; all of which are Group 35 Yellow Tops. I have isolated the house battery from the auxiliary batteries with a RedArc SBI12 Smart Start Isolator. One question that I have come across is that everything I read determines that the best charging voltage for a deep cycle AGM battery is 14.8V. Of course the tacoma seems to have a peak of 13.8V. Now speaking of DC/DC chargers that some how bring the alternator charging output voltage to 14.8?? Is this really necessary? Will running a charging voltage of 13.8 vs 14.8 drastically reduce the life of my AGM's?