If I remember well, recently scientists in USA have invented a compound, which reduces the charging time of a Li-Ion battery by ten-fold. In other words, they invented a new content of the battery.
I guess it will take some time till it becomes a product.
Regarding the existing batteries, I would be careful. Lithium is capricious. It loves fire. Perhaps changing voltage, or charging frequency may speed the process up, and cool the battery. You need to experiment.
Become a scientist.
If I remember well, recently scientists in USA have invented a compound, which reduces the charging time of a Li-Ion battery by ten-fold. In other words, they invented a new content of the battery.
I guess it will take some time till it becomes a product.
Regarding the existing batteries, I would be careful. Lithium is capricious. It loves fire. Perhaps changing voltage, or charging frequency may speed the process up, and cool the battery. You need to experiment.
Become a scientist.