We got by with the OEM charging plug for about a month, but upgraded to a used Clipper Creek LCS-25P. It cost us $320 and plugs into an existing dryer receptacle. While it charges at a max of 4.8kWh per hour, it typically gets our 500e fully charged in 3 hours and ready to go for another 45 mile commute (my wife has free charging at work). I plan to upgrade the EVSE in a few years, after the battery density or common charging rate increases and I have a reasonably-priced car that can utilities it. For now, 4.8kWh is just fine. If I'm in a jam, there are 4 ChargePoint stations about 1/4 mi from my house and only charge $1 per hour.