I've read everything I can find but appear to have something wrong. I have a 2010 Sprinter. I'm using 4 gauge wire throughout my circuit.
From the positive terminal of the van battery I am wired to a 150 amp breaker. From there, I am wired to a fairly expensive battery isolator. All this is under the driver seat.
From the isolator, I run a cable to the passenger seat to the positive terminal of my first battery. I have a cable from the positive to the positive of the second battery. I have a cable from the negative first battery to the negative second battery and a cable from the negative second battery to a grounding bolt on the floor under the passenger seat.
Why does it take so long to charge my batteries? Should I be running this circuit from the alternator? If so, where would that connection be? Is it in the circuits under the driver seat? Do I need a small charger running off a small inverter to augment the slow charge I'm getting from the main battery?
Apparently I have done something wrong. I've been sitting in Laredo for 4 days and have lost all my charge on my aux bank and just running the van for a while does not charge them back up. Maybe that's the way it's designed to work. Maybe if I were busy and driving the van more I wouldn't have this problem.
Any suggestions?
Thanks.
From the positive terminal of the van battery I am wired to a 150 amp breaker. From there, I am wired to a fairly expensive battery isolator. All this is under the driver seat.
From the isolator, I run a cable to the passenger seat to the positive terminal of my first battery. I have a cable from the positive to the positive of the second battery. I have a cable from the negative first battery to the negative second battery and a cable from the negative second battery to a grounding bolt on the floor under the passenger seat.
Why does it take so long to charge my batteries? Should I be running this circuit from the alternator? If so, where would that connection be? Is it in the circuits under the driver seat? Do I need a small charger running off a small inverter to augment the slow charge I'm getting from the main battery?
Apparently I have done something wrong. I've been sitting in Laredo for 4 days and have lost all my charge on my aux bank and just running the van for a while does not charge them back up. Maybe that's the way it's designed to work. Maybe if I were busy and driving the van more I wouldn't have this problem.
Any suggestions?
Thanks.