Charging Cable and SocketEnlarge Photo
Ask owners to give you a list of fears associated with their electric cars, and a few charging concerns are bound to be on the list.
Usually, they include not finding somewhere to charge, or that a charging station isn’t accessible for some reason.
Now a new one can be added to the list: not being able to unplug.
A reader contacted Green Car Reports about a SemaConnect Level 2 charging station in Decatur, Georgia.
As reported on the CarStations website, more than one electric-car owner has had difficulty with that station over the past few months. Several drivers found they couldn’t unplug their cars after charging had completed.
[UPDATE: SemaConnect contacted us swiftly after this article was published, sending a statement that said, in part, "We are working very closely with the supplier of this component to quickly resolve this matter. We greatly appreciate your patience."]
The problems seem to revolve around the latching mechanism used on J1772 connectors to prevent the charging cord from being accidentally pulled out of the car while it is charging.
“CAUTION,” wrote one user about the Decatur station back in August. “Connector latch does not move enough to remove connector from vehicle without prying off with a screwdriver.”
Another electric car owner, using the same charging station last Sunday, reported being stuck for two hours trying to remove the charging station handle from the car.
“The guy at the 800 number couldn’t even find the location on their system and said that we would have to wait until 8 am tomorrow,” he said. “[We] called the cops and they were able to pry it off.”
Meanwhile, as reported yesterday on AutoblogGreen, a Think City owner on the way home from last months’ National Plug-In Day had a similar experience at a Level 2 charging station at a Walgreens pharmacy in Philadelphia.
2011 Chevrolet Volt plugged into Coulomb Technologies 240V wall charging unit
2011 Chevrolet Volt plugged into Coulomb Technologies 240V wall charging unitEnlarge Photo
“The charging went fine, but when I went to disconnect, I could not,” the owner wrote on the Think_EV message board. “It felt like the release button on the nozzle couldn’t be pressed down far enough.”
In all of the above cases, it appears the latching mechanism on the J1772 charger plug is to blame--not lifting up enough to allow the plug to unlatch from the car.
At the moment, this issue seems rare.
But should you encounter a similar situation, there are a few things to remember: