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As a tinker and member of IEEE, I have been trying to build a Tesla-like supercharger at home.

Trying to cut the charging time from 10 hours to 5 hours!

It's a level 3 (L3) DC fast charger (DCFC), using regular 240V power to my house.

I have a 200 Amp electric panel. Added a 100A breaker dedicated to this DCFC charger. Designed at 21KW.

That's the best I can try at home before I upgrade my panel to 400A.

Call me stupid or not - but I spend $8,000 on the parts so far. It starts working!

Note that this charger is completely different from the 80-amp Ford Charge Station Pro. It is DC! So, it is fast.

I designed a rectifying module at 20KW to replace the onboard Ford charger (standard range) that bottlenecked at 40A using AC.

Wondering if anybody has also built the same at home!

 

[GDN]

Congrats - this is definitely what you call a hobby.

 

[KElkhorn]

I don't know that 21 kW is going to be enough of a difference from 19.2 for those of us with an ER battery to make it worthwhile, but certainly an interesting project, I hope you keep us all posted on your progress. Also, you probably need to feed from a 125A breaker, as you would be drawing close to 90 amps with this running.

 

[Pitch2Johnny]

Look at freewire

 

[Pitch2Johnny]

They couple a battery with a charger to get DCFC output with a 24kW input

 

[KElkhorn]

Kodiak Level 3 DC Fast Charger – Single – GRIZZL-E

A bit more than your 8K, but would this have been easier?

 

[lymanwarnock]

As a tinker and member of IEEE, I have been trying to build a Tesla-like supercharger at home.

Trying to cut the charging time from 10 hours to 5 hours!

It's a level 3 (L3) DC fast charger (DCFC), using regular 240V power to my house.

I have a 200 Amp electric panel. Added a 100A breaker dedicated to this DCFC charger. Designed at 21KW.

That's the best I can try at home before I upgrade my panel to 400A.

Call me stupid or not - but I spend $8,000 on the parts so far. It starts working!

Note that this charger is completely different from the 80-amp Ford Charge Station Pro. It is DC! So, it is fast.

I designed a rectifying module at 20KW to replace the onboard Ford charger (standard range) that bottlenecked at 40A using AC.

Wondering if anybody has also built the same at home!

Are you sure this won't void your warranty?