I use this calculator :
https://evadept.com/calc/tesla-charge-time-calculator
in Summary, it also depends on the amperage (16 or 32 Amps)
so 11.5Kw compared to 16Kw, the difference will be the speed of charge which is 40% faster. so if charging time for (32Amps, 240Volts, 16Kw) is 5 hours, then...