So many questions - so little time. :)

[electriceddy]

I am using a ZenCar charger, 240V 16A with a NEMA 6-20R socket installed by a local electrical contractor. The charger draws 3.6-3.8 kW, so the most recent recharge from 36% to 80% took about 7.5 hours. (I would have had to rewire the entire house to get 32A, or pay about US$2K to get an Automatic Load Sharing addition to my electrical panel to get increased amperage.)

ZenCar makes a very decent EVSE

 

[wizziwig]

The Yura EVSE that comes with Kona is rated 12A 120V

FYI, many of the portable EVSE units included with cars are labeled 120V but actually work perfectly fine at 240V. The manufacturer just slaps on a different label and plug depending on which world region it is sold. You can either make your own plug adapter to connect them to 240V outlets or buy something like the dual 120V adapters sold on this site:

www.EVDoctor.net

They also include a list of pre-tested 120/240V compatible EVSE units. You're still going to be limited to 12A but it will double the charging speed compared to using the same EVSE at 120V.

 

[electriceddy]

FYI, many of the portable EVSE units included with cars are labeled 120V but actually work perfectly fine at 240V. The manufacturer just slaps on a different label and plug depending on which world region it is sold. You can either make your own plug adapter to connect them to 240V outlets or buy something like the dual 120V adapters sold on this site:

www.EVDoctor.net

They also include a list of pre-tested 120/240V compatible EVSE units. You're still going to be limited to 12A but it will double the charging speed compared to using the same EVSE at 120V.

Thanks for the link for the adapters, I however would require PROOF (written documentation) that the included EVSE with its certified rating @ 120 V is capable of 240 V input without any modifications - ie manufacture specifications.
A schematic diagram would be a good start.

 

[wizziwig]

.
A schematic diagram would be a good start.

http://electricstuff.co.uk/evse/evse.html

That's the one sold in UK (240V only market). The AC/DC converter that runs the <12V electronics inside the EVSE supports voltages from 90-277V. Since it's glued together, I'm not about the break open my USA version to prove it's exactly the same inside.

 

[Robbert]

FYI, many of the portable EVSE units included with cars are labeled 120V but actually work perfectly fine at 240V. The manufacturer just slaps on a different label and plug depending on which world region it is sold. You can either make your own plug adapter to connect them to 240V outlets or buy something like the dual 120V adapters sold on this site:

www.EVDoctor.net

They also include a list of pre-tested 120/240V compatible EVSE units. You're still going to be limited to 12A but it will double the charging speed compared to using the same EVSE at 120V.

That is really interesting (and makes sense). I wonder if anyone on this forum tried this with theirs.....