PV Gap

Donna Said:

Will an alternative solar panel work for a remote control that needs a 4V 25mA power?

We Answered:

Sounds like a fun project.

Maybe try this http://www.goldmine-elec.com/SolarItems.…
G16075 $3.49 ea.

When doing a low-current charger as I suspect you are, there is no need to have an exact voltage of solar panel, as long as the voltage is high enough. A 12V panel at 20 mA will drop to 2.8V at 20 mA when you connect it across two NiCd batteries.

The design must have batteries or capacitors in it, as a remote control will draw in excess of 1A of current for brief peak pulses.