got an email from Phil. thank you Phil for the very quick response quoted below
Hi Dave,
We aren't offering anything just yet, but considering offering an upgrade to your EVSE. You send us your EVSE, we upgrade it, include plug adaptors to allow 120V or 240V use, and send it back. We should be able to turn these around within a business day.
We are in Berkeley, CA.
No costs have been determined yet, we would need to source parts still. We had not planned on extending the length of any cables, though if you use a proper wire size, there is no technical reason why it can't be extended. Say if you needed an extra 50 feet, that could be done with #12 cable, and 2 L6-20 ends. However, Due to safety concerns, you generally don't want to run unprotected 240V cabling outdoors. Everything past the EVSE box is "safe" for use outside, but anything before it is not. One simple way you could make it safe is to have a 240V GFCI put in where you plug in the EVSE.
I suppose we could upgrade your cable length from the EVSE box to the J1772 connector, which would be safe to use outside. If you wanted to pay for the cable (not exactly cheap), we could likely do this for you, then it would be a safe way to have a long reach.
If we are able to offer this service I will be sure to let you know. It will involve sending us your EVSE and we will then send it back with the upgrade complete. We will warranty the upgrade for at least a year. It will then still work as before on 120V, but you then can also use it on 240V at your discretion. The unit will auto-configure for each voltage.
Also note that "110 volt" hasn't been available in this country since before WW2. The proper voltage is 120V. =)
-P