Burning 24.5 gallons of diesel makes 1 MWh of heat, so at 50% efficiency call it 50 gallons per MWh .
This makes the 6.2 MWh battery equivalent to about 300 gallons of diesel.
If you plug in this battery to charge at 1MW, it will take about 360 min to charge, so a 1 MW charging station is equivalent to a gas pump that pumps about one gallon per minute.
I do not think they are using the blue plugs shown in the picture for charging the battery. Those look like 480V 150A plugs to me, and those can only supply 0.077 MW. It is more likely those blue plugs are for "Shore Power" used while in port for stuff like like air conditioning, computers, cooking.
This makes the 6.2 MWh battery equivalent to about 300 gallons of diesel.
If you plug in this battery to charge at 1MW, it will take about 360 min to charge, so a 1 MW charging station is equivalent to a gas pump that pumps about one gallon per minute.
I do not think they are using the blue plugs shown in the picture for charging the battery. Those look like 480V 150A plugs to me, and those can only supply 0.077 MW. It is more likely those blue plugs are for "Shore Power" used while in port for stuff like like air conditioning, computers, cooking.
To charge something this big overnight you would want a more exotic type of plug, something like https://en.wikipedia.org/wiki/Megawatt_Charging_System