An interesting note about the solar panel used: I bought it from solarbotics, and the panel "burnt out" after a few hours in the sun. Several of the subcells were noticeably darker and the headbot will no longer activiate under my testing lamp. Changing the panels to one in storage fixed the problem and it was once again responsive under my normal test lamp. An email has been sent regarding these solar panels which don't seem to like the sun :P
Cheers,
Steve