I am curious as to how high electric cars can go. This might be applicable if you wanted to drive up a mountain, drive out of California, or to Denver for example.
Certainly, it is possible to increase range by minimizing drag coefficient. But height is mainly a function of energy density - how much energy you can store per unit weight. There will be a maximum for each battery type. It should be easy to figure out.
Batteries are measured according to Whr/kg or (Watt Hours/kg).
1 Whr = 3600 J/kg.
So, for a 1kg battery that has 3600 J, E = mgh, h = E/mg = 3600/9.8 = 367m. So basically, each Whr is the same as the ability to go a vertical distance of 367m.
Therefore a regular flooded lead acid battery of 30Whr/kg will be able to travel a maximum of 30*367 = 11010m, or 11km. In actuality, this isn't possible in an EV because there is parastic weight, wheels, body etc. Which is practically, what, half the weight? Meaning 5.5km, and in actual fact less because energy is used to warm up the air as the vehicle drives through.
If you guy have hear of Randy in Hawaii and his famous mountain climb - I did the math and came up with how much energy it took to drive the 37 mile distance and then factored in the energy to lift the weight up the altitude and you could not do it with lead batteries no matter how may you could carry. It all comes down to energy density a simular calculation was down with my electric scooter and climbing Mt Washington and I couldn't do it without better, lighter, more energy dense batteries.
I hope to god the firefly battery is not a vaporbattery. It seems to have a lot of potential. I wonder if you could test it yourself, after all it appears that it's just changing lead for graphite foam... I should find a firefly thread to post on.