The formula to calculate the Solar Panel Voltage (Vsp) is:
\[ Vsp = C \times Vpc \]
Where:
Let's say the total number of cells (C) is 36, and the voltage per cell (Vpc) is 0.5 volts. Using the formula:
\[ Vsp = 36 \times 0.5 \]
We get:
\[ Vsp = 18 \, \text{volts} \]
So, the solar panel voltage is 18 volts.