Brian
I think chargers offer a bigger boost than these sorts of things.
This one is described as a trickle charger which is what I assume the conditioner is doing most of the time.
Trickle ChargerIf I understand the technology behind these correctly they should work with all light sources although the output may vary. The ideal way to measure it would be to leave the aero and check the power in the battery and then monitor it a week later to see how much has disappeared. If you can disconnect the battery and then leave one of these attached for a week you will be able to see if its made up the shortfall.
If its topped it up to half the original level then simple maths would suggest doubling the panels surface area.
As I've said before it would be far easier if you let me look after it for you.
Bedtime reading
Solar Cells 
