I am by no means an expert, but I seem to remember that the reason lead-acid batteries are good for that particular job is that they can release a huge amount of stored energy in a very short time, which is what you want when you need to fire the ignition of a car. I think other battery types are much more limited in their maximum power output. I am absolutely not sure this is also true for this new type of battery, but it might be.
I am by no means an expert, but I seem to remember that the reason lead-acid batteries are good for that particular job is that they can release a huge amount of stored energy in a very short time, which is what you want when you need to fire the ignition of a car. I think other battery types are much more limited in their maximum power output. I am absolutely not sure this is also true for this new type of battery, but it might be.
I found one!
https://lanpwr.com/products/lanpwr-sodium-ion-starting-battery-user-manual-12v-50ah-610wh
The only downside seems to be price. It’s about $388 USD whereas my last battery was about $150.
But that’s cool that they exist.