Lithium-ion and lithium-polymer batteries of various brands provide energy for Teslas, Leafs, and Bolts, but continue to disappoint by stalled energy density, power density, and safety concerns. Two relative newcomers to the field might have answers to these concerns. Unlike many other newcomers, production might be less than five years away. Enovix Corp. Ken Rentmeester, a good friend and retired chemical engineer, volunteers in the local TeenFlight program run by Dick VanGrunsven. He shared his copy of the IEEE Spectrum containing an article about a new battery company that may have some answers to problems common to lithium batteries. The company’s claims for their Enovix battery are impressive. “Patented 3D cell architecture, a patented 100% silicon anode, photolithography, and wafer production increases energy density and eliminates thermal runaway.” Making thermal runaway go away would make the Enovix battery a much desired energy source, especially for electric aircraft. A recent fatal collision of a Tesla Model X with two other cars …