Realme's 320W SuperSonic Charge fills the battery in under 5 minutes

I don't think we have the stats yet, but it most likely will not increase the lifespan of the battery ;)

My guess would be something like 500 cycles, which would roughly translate to 1-2 years, until the battery degrades noticeably.

You can potentially split the battery into multiple cells so that you don't charge them with the full voltage (if I understood correctly what OnePlus introduced some years ago). But still, that's a lot. And potentially a lot of heat you have to disperse as well.