Lithium battery

I have used Noco batteries in most of my bikes and they haven't let me down yet.
The Sodium Ion batteries are new to me and on paper they would appear to be the next 'thing' in motorcycle batteries - lighter, more CCA and cheaper than Lead Acid too!
I am still designing my electrics and could do with some more space under the seat - I might have to give one a try on the Supercharger project