I have built multiple EV conversions and used DC charging.

- AC is easier to start with

- DC charging protocols you need to communicate & negotiate with the rapid charger in the street

- There is no reason why you couldn't DC charge any conversion in principle, just comes down to time & effort

If you want to read more, AC is J1772 and is just a voltage dividing resistor with some PWM https://www.fveaa.org/fb/J1772_386.pdf

For DC there are two (three?) protocols

- ChaDeMo is being phased out despite being the best one (V2G & simplicity of use)

- CCS2 is what the big manufacturers have come up with and it is hilariously complicated. My friend Uwe developed the FOCCCI project that has reverse engineered it

- In the US Tesla are using NACS (not sure on the details)

I am recording a video series where I illuminate the tech behind EVs, charging and energy, you can find it in my submissions.