How does this work if different airplanes have different battery packs? In other words how does a Piper "Cub" carry the battery pack for a Cessna 182? All would also have to be the same voltage and have the same current drain characteristics. Also important to me would be how long do the batteries have to be in service to "break even"? And, with that said, do I want to stay with an Li-ion battery when a Li-Po battery comes along? As noted earlier, there are soooooo many questions, and until it becomes financially viable, it won't happen ... regretfully.

Keep thinking, though, we need more out-of-the-box ideas to re-energize aviation.