Virtuabotix 2V 150mA Solar Cell with Wires
Voltage (Nominal): 2 Volts
Current (Nominal): 150 mA
Size: 54 mm x 54 mm x 2.75 mm
How to use solar in your electronics projects
In nominal (full light) conditions you can treat these solar cells pretty much like batteries, arranging them in series and parallel to create just about any combination of 2V and 150mA. You generally want to account for variations in conditions by planning for 75% or less of nominal output, so if your system must have at least 3 volts to operate you would want to use two cells.
In general you put cells in series to increase voltage, and put cells in parallel to increase current. Putting a battery and charging circuit into your project is another great way to maximize the utility of these cells.