On Wednesday, April 15, 2015 at 1:03:37 PM UTC-4, Clay wrote:
"DC doesn't switch worth a crap either... interrupting a high current DC load is *really* hard on switch contacts and best avoided."

Better to get rid of switch entirely and just install a diode for each battery?

With diodes on each master circuit, you prevent back-feeding the discharged battery and the high current problem goes away. Keep the switches.

best,
Evan