I don't know electricity like some of you do, so I'll ask for your expertise.
Currently, I have a 100w solar panel, with a PWM controller. It is connected to a single 12v battery.
If I go with 2 6v batteries, instead of a single 12v, do I need to change anything regarding my solar? Is my PWM controller still sufficient?
My electric use is LED lights, the water pump, and, in the winter, the furnace fan. I don't use much electricity (so maybe I don't really need to go with 2 6v batteries, but I would like to be covered, in case I have to go 4 days with no sun).
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