On Saturday, 26 November 2016 17:16:00 UTC+2, Jonathan St. Cloud wrote:
Not exactly. I know a guy who has a radio, transponder, Butterfly vario, LX9070, S80, Flarm, V3 vario and a strobe built into the vertical fin, that can either act as a strobe or only strobe with a Flarm alert. All that stuff takes about four hours to go through one lithium battery with two factory installed solar panels topping up the battery. Good thing he has two and possibly three batteries (if he is not going to use the engine).



Hmmm. One could also install small generator in glider to drive set of christmas lights and espresso machine in cockpit.

I have e-vario, flarm, radio, PDA power and flarm display with small 8 Ah LiFePo4. It takes 11 hrs to run dry. Other similar battery is waiting in reserve. I could easily install similar physical size LiFePos with 30-40 hrs of current. That would be a week of gliding.