"JS" wrote in message
ups.com...
These equipment-based topics come to mind immediately.

Batteries.
Solar panels.
Transponders.
Transponder antenna mounting.
Altitude encoders.
Alternatives, ie: FLARM.

Anytime you are discussing the combination of solar panels and batteries,
we also need to be discussing charge controllers. Since you have broached the
subject of Lithium Ion batteries, you would need to find a controller that is
approved for those batteries. Be aware that the dangers of Lion batteries,
largely (but not exclusively) concern charging.


There are a few interesting photovoltaic panels available. For example,
a 5 Watt "Powersheet" can be mounted on the fuselage above the spar.

Not to discourage PV panels, but you only get your entire five watts when the
entire panel is flat and pointed directly at full sunlight, and probably not
even then. With solar panels, always derate the manufacturer's claims by at
least 50% to approach real-life expectations of results. (As they say, your
mileage may vary)

Vaughn