greengate said:
...how would one know that their charge was complete?
Every car has it’s own indicators. On a LEAF, all the lights on the dash will go out. On the Fit EV, Green light is out. Focus Electric, light ring is dark. If you don’t know how to tell, don’t unplug.
ChargePoint shows charge status and current draw. ClipperCreek shows green charge light (relay closed). Blinks are difficult to discern, but most charge for connect time.
greengate said:
...Is it OK to disconnect someone when their charge is complete and they are still plugged in...
As ebill3 noted, when parking regulations require connection to occupy the space, don't take the plug.
If site charges for connect time, don’t take the plug.
Some J1772 plugs have a hole in the release button so it can be locked-out. Lock = no.
Owners vary from generous to territorial. Check the dash for a charge sharing protocol card. Most show time charge will finish and a cell number if a question. Follow card if present.
Chevy Volts are set to alarm when plug is disconnected. Function can be turned off, but no way to know.
In any situation where I decide to unplug another car, I always leave a charge sharing protocol card in my window or stay with the car so the other owner can contact me.