Ok, so the reason I suggested a 70amp breaker is because the rear battery isn't likely to draw more than 60 amps from the alternator should it be seriously drained.
And in a proper setup, you should rarely need to start from the rear battery, since the whole purpose to this exercise is to protect the starting battery from discharge
So what is the recommended breaker/fuse size if by chance you need to start from the rear battery? Something is telling me 150 is plenty, and hoping so, because I have four 150amp blue sea breakers and I'm getting ready to put a second Odyssey PC1700 in the back of my 4runner.
→ 2006 4Runner, 4WD, 4 tires and a spare, a lift, and some armor.