Dream Panel

The LXV3 has a battery pack UPS you can buy with it that will power the instrument with full audio for 8 hours or more. That is the pack I would use.
As for why Butterfly and LX 90XX with V8, in one instrument you have a back up vario with audio, speed to fly, instatainious wind, navigation, final glide, Flarm display, Flarm radar, data logger, horizon and perhaps a few others I am missing. Not cheap but then the question was "dream panel".

On Wednesday, September 23, 2015 at 1:56:26 PM UTC-7, Jim Pengelly wrote:

This is pretty much what I'm planning for my new ship. A few (probably stupid) questions for you: 1) What is the smallest battery that the LX V3 would have? 2) Why both the V80 and the Butterfly Vario? Can't the V80 do everything that the Butterfly can do? 3) Any idea if all that would all that fit in a JS1's panel? By my reckoning, with the jet control unit taking up one slot then there wouldn't be enough space for both the V80 and the Butterfly but that's a guess.