Someone came here the other day looking for the answer to this question – which battery terminal should you connect first. It’s a great question. We’re talking about automotive batteries, and whether you connect the positive terminal or the negative terminal first.
You need to increase the amp hours available from a battery bank as well as the voltage. This article shows you how!
How do you connect two 12 volt batteries in series to get 24 volts? On the face of it it’s an easy answer – read about it in this article. But there are many complications when you get into mixing systems – maybe you have a 12 volt alternator running your main circuits, and a 24 volt auxiliary piece of equipment. This article starts by explaining the basics.