Conductance Battery Testers for 32 Volts?

I received a query from one of our readers today that is worth sharing. Although not too popular at the moment, this fellow is working on a boat with a 32 volt DC system. Some years ago these systems were quite popular. Not so much today. I spend more time answering questions about how to convert the older boats from 32 volts to either 12 or 24 volts. The question regards the use of conductance battery testers such as the one I use shown here: Midtronics EXP Conductance Battery ...