The following article regarding a Lithium-ion battery technology breakthru was sent by our former Tech fellow for Avioncs Don Antilla. It immediately reminded me of the effort we undertook decades ago to improve the CAT A performance of the S-61 by way of adopting the cartridge start system of the B-57 Canberra. Here is the link:
https://www.wired.com/story/quantums...state-battery/
It is absent the kind of information that would allow serious speculation about whether it suggests itslf as a practical design option for improving Cat A performance at a reasonable cost and weight penalty, but perhaps some of our tech members could add their thoughts?