Mex,
You are telling these people a lot of what I have been saying here and everywhere else. Thank You
One of the first things I was schooled about is not trying to change banks that are in parallel. It just doesn't work. Yes, I can explain why, but it is about a two beer talk.
I learned a lot about keeping batteries alive and well from a couple of WWII submariners when I sailed some long passages with them. They had hydrometers that you would probably die for... But they are no longer available.
Did you know that those submarines ran a still for battery water? They didn't have enough water to wash, but they made battery water.
For the last thirty years, I have used a refractometer. Temperature compensation is unnecessary. The first one I bought was not Chinese and was made to be a piece of laboratory equipment. I check its calibration occasionally, but it is still where it belongs.
Matt
