Lithium-ion batteries are the benchmark for all of these, except maybe the explosion thing. They offer thousands of cycles where many prototypes only last a few

Lithium-ion batteries are the benchmark for all of these, except maybe the explosion thing. They offer thousands of cycles where many prototypes only last a few hundred. They basically function in the range -10–+40 C while some prototypes do not even cover this range — sodium–sulfur for example requires >200 C. And, well, humans tolerate small probabilities of disaster, probably because our bodies do that anyway (as an early-life cancer patient, I would know).