The 50kW, 150kW or 350kW is basically how much energy can be added to the vehicle at a time. So higher number = more energy added = faster charge.
There are three levels. (Actually the correct term for “Level 3” is DC charging, but I call it level 3 as well.)
Technically charging with the CSS-plug is DC charging, where the smaller L1/2 plug is AC charging.
- Level 1 is limited to 120V and 1.8 kW and delivers basic charging.
- Level 2 is defined as 208V to 240V and up to 80A, with a maximum output of 19.2 kW.
- DC Level 1 and 2 provide fast charging and are only available at commercial stations with a power output of up to 350 kW.
Note: the MME can only accept up to 150kW, butin my experience I get a faster charge on the 350 chargers than on the 150. just know that you won’t always get the “max speed”. A lot depends on temperature and charge level on the car.
Note 2: with the Ford home charger that comes with the F150 Lightning, you can actually do DC charging at home