I have been following this post and have learned a lot. I had no idea there was a proper way to connect two batterys in parallel before being educated by the various posts.
One thing that has not been discussed is the internal resistance of the battery. I was always taught that compared to dry cells a lead acid battery has a very low internal resistance which is in part, why it can deliver the high amperage required for starting. The internal resistance of the battery is not typically listed in the battery specifications. However, I did find it listed in my Optima battery brochure, or you can check; (www.optimabatteries.com).
They list a 12V at 800 CCA, internal resistance of .003 ohms, weight of 37.9 Lbs and a 6V at 800 CCA, internal resistance of .0019 ohms, weight of 18.5 Lbs.
I believe the two 12s in parallel would translate to, two resistors in parallel for a total resistance of .0015 ohms. The two 6s in series would translate to, two resistors in series for a tatal resistance of .0038 ohms. This would seem to be a significant advantage for the parallel connection.
Not claiming to be a sparkie perhaps someone else can comment.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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