The Frugal Tinkerer

Now that I have soldered together four rows of cells, I wanted to measure each of the rows before soldering them together.  It makes sense to make measurements every step of the way to minimize the amount of rework required if I had a bad component.  I expect each row to be about 4.5VDC because the rows are comprised of 9 cells, each rated at .5 volts.  9X.5=4.5.  My rows were about 4.9VDC, as shown in the image below.

I simply laid the rows out in the sun.  The professionals have calibrated light sources, sort of like a suntanning table, that they use.  I doubt I’ll ever get to that level of maturity, but who knows?

The picture shows the output of one row of cells.  Each row measured the same.  So I’m good to solder them together now.