In Reply to: 12 volt electrical Question? posted by steveVa on December 07, 2017 at 14:03:27:
Do not have all the answers. But on the boat: I have two six volt batteries connected to make one 12 volt unit. Plus a dedicated starting battery. I have a smart solar panel regulator. A 12 volt magic box that charges both batteries separately together. Both being 1 starter, 1 12 volt comprised of the two sixes.
I also have a magic charging unit that does the same thing, but uses 120 volts to power it. Some disagree, but I only use one charging system at a time. Regulators get confused if more than one input. The other input is the alternator.
Inverters use a lot of power. Something to do with sine waves.
Everything you wanted to know about twelve volts, is in a book by that name.
Might be Living on twelve volts. I use a 1000 watt inverter on the boat to charge small batteries and run the coffee grinder. Everything else like lights, fridges, navigation, stereo runs on 12 volts. Will do the same with my cottage on the Island.