When you wire your solar panels in series, the amperage remains the same, and also the total voltage output becomes the sum of the voltage output of every panel. Utilizing the same three 12 volt, 3.5 amp panels as above, we can see the difference. Wired in series, they now produce 36 volts at two.5 amps. What if we hook up our three other boards? Correct. Our amperage remains at three ..5 and our voltage...