When I bought my used Volt from a Honda dealer, it came with a new Quickchargepower EVSE still in box complete with invoice for $200. Working fine so far (5 months). It's made in America of course we all know nothing is "made in the States" these days with the trade wars as parts come from all over the world. Looks like a Duosida from the outside. Comes with a pigtail but I just plug it into my 240V 20 Amp circuit with the twist lock connector. Relatively cheap way to go L2.
https://www.quickchargepower.com/
https://www.quickchargepower.com/
