Gotta finally comment here, in an attempt to reduce the chance that a rookie EV-and-DCFC user will resort to using the emergency stop button on the DCFC. With a DCFC session in progress (not already ended due to being at 100%), a strong and long push on the big plug's button should, as I understand, cause the EV to command the DCFC to bring the charger's DC current down to zero. Once that is done the Bolt will open the little shiny tab that is locking the big plug onto the Bolt's receptacle. The other ways of stopping the DCFC session and bringing the DC current to zero as already described above are also fine, of course.
In my experience this strong and long push on the plug's button might take 3 seconds, and if there is not too much ambient noise it might be possible to then hear the DCFC winding down (cooling fan?). That would confirm the DC current is down at zero and so now a pull would work to safely remove the plug. Could also bend down and look for that shiny tab to be in the up position to confirm that the lock is not in effect any more. The Bolt's design with this shiny locking tab is meant to hold the big plug in place and so prevent the user from interrupting a high DC current (an arc) by somehow forcing the plug off when the current is still above zero.
My purpose of preventing use of the DCFC's emergency stop button is due to the possible long recovery time to get the DCFC unit re-set and ready for the next user. It might, on non-communication-equipped units, require a site visit by a service provider. Some units may have an emergency stop button that, once used, can be rotated to do a re-set right there and then.
A related tip is that if the DCFC cable is short or the EV's port is not close enough to the DCFC, there might be a lot of "side-pull" of the big plug against the EV's receptacle. The resulting plastic-on-plastic friction might make it seem that the plug is still locked onto the car even after it is clear that the session was properly stopped. Relieve the side-pull and try another pull. Happy DCFC-ing!
In my experience this strong and long push on the plug's button might take 3 seconds, and if there is not too much ambient noise it might be possible to then hear the DCFC winding down (cooling fan?). That would confirm the DC current is down at zero and so now a pull would work to safely remove the plug. Could also bend down and look for that shiny tab to be in the up position to confirm that the lock is not in effect any more. The Bolt's design with this shiny locking tab is meant to hold the big plug in place and so prevent the user from interrupting a high DC current (an arc) by somehow forcing the plug off when the current is still above zero.
My purpose of preventing use of the DCFC's emergency stop button is due to the possible long recovery time to get the DCFC unit re-set and ready for the next user. It might, on non-communication-equipped units, require a site visit by a service provider. Some units may have an emergency stop button that, once used, can be rotated to do a re-set right there and then.
A related tip is that if the DCFC cable is short or the EV's port is not close enough to the DCFC, there might be a lot of "side-pull" of the big plug against the EV's receptacle. The resulting plastic-on-plastic friction might make it seem that the plug is still locked onto the car even after it is clear that the session was properly stopped. Relieve the side-pull and try another pull. Happy DCFC-ing!
