Battery corrosion
The metal brackets that hold down the batteries tend to collect a lot of "white" stuff. I've cleaned them many times using battery cleaner and then sparying with battery protector. Terminals themselve...
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Many batteries have the vent in the center of the top plate like this:
https://www.centennialbatteries.com/centennial-commercial-heavy-duty-battery-c-31-10st-group-31
Unfortunately this is also where the battery hold down bracket is positioned. Our Buick Lucerne had this arrangement, but it also had a tube fitted over the vent that extended below the battery case. I copied this system for our house batteries using clear vinyl tubing. The tube is secured to the vent with a small wire tie. It extends below the battery box and a couple inches below the frame rail. Itis also wire tied to the frame rail. The tubing has been in place 2 years and the hold down bracket and frame rail are still corrosion free.
https://www.centennialbatteries.com/centennial-commercial-heavy-duty-battery-c-31-10st-group-31
Unfortunately this is also where the battery hold down bracket is positioned. Our Buick Lucerne had this arrangement, but it also had a tube fitted over the vent that extended below the battery case. I copied this system for our house batteries using clear vinyl tubing. The tube is secured to the vent with a small wire tie. It extends below the battery box and a couple inches below the frame rail. Itis also wire tied to the frame rail. The tubing has been in place 2 years and the hold down bracket and frame rail are still corrosion free.
