Actually, I take this back. Sort of. When I posted that I was thinking of the HPWC, which doesn’t even have a neutral connection and will charge at 240V or nothing. However, the OP didn’t say what he was using to charge with. If he’s just using a 14-50 outlet with the mobile connector then I don’t know how that would handle the loss of one of the hots. The mobile connector can charge at 120 or 240 volts, and a 14-50 outlet does include the neutral, but I don’t know if the neutral is even wired through the mobile connector’s 14-50 plug or if it would use it to charge at 120V if it only had one hot. So I guess this might be possible. Maybe.