Good morning Tony. Happy Thanksgiving.
I put a Sure Power isolator on my '71 Dodge van (that I bought new and still have) in about 1982 and it's still working perfectly. When my trailer has been sitting at a camp spot for several days the battery can become quite discharged. The isolator keeps the starting battery in the van from discharging even with the trailer umbilical cord plugged in to the van. The best part is that the isolator keeps the voltage regulator on the van from getting "confused" by having to deal with one discharged battery and one that is fully charged.
I don't know how the isolator knows how much current to send to each battery but it does. One of my sons is an electrical engineer and I could ask him if your curiosity on the subject is intense.
On another thread here you will read that wire with thin strands is preferred because electricity flows on the surface of wires.
https://www.stovebolt.com/ubbthread...le-ground-short-problem.html#Post1286977That assertion is INCORRECT because direct current flows IN the conductor, not ON it. Even alternating current obeys the "skin effect" to varying degrees, depending on its frequency. I like to check the assertions of self proclaimed "experts" because their "facts" are so often incorrect.
