Li-ion is a BAD technology.
It’s one thing to make billions of Li-ion batteries and put them into throw away cell phones, etc.
It’s quite another to rely on them in a plane carrying a couple hundred folks.
I will never understand this fascination with pushing the envelope when it comes to stuff like this.
They should be sticking to the tried-and-true. Lead acid is PROVEN tech that has over a century of reliable service!
A VOLT with wings.