GM Volt Forum banner

1 - 8 of 8 Posts

·
Registered
Joined
·
165 Posts
Discussion Starter #1
That's something I've did a few times, wondered if that's ok?

It's warm weather so I cool the car off while plugged in but should I turn it off before unplugging?

Thanks
 

·
Registered
Joined
·
13,660 Posts
I do this all the time, no issues. As soon as the pilot signal is cut, the EVSE will flip a big relay and stop the power from flowing.
 

·
Registered
Joined
·
293 Posts
Yep. Been doing it every day, twice a day for a few years now. Zero issues.
 

·
Registered
Joined
·
1,339 Posts
The only way this would not be ok, is if you were grabbing the outlet plug and unplugging it. The J1772 plug is designed for all this, it cuts power as soon as you press your thumb on the button. If you were to unplug from the wall, you'd be putting your hands very close to 1-3kW of flowing juice, which I don't recommend (the car would still be fine, it's just less safe for you).
 

·
Registered
Joined
·
3,396 Posts
Just remember it's a one-way street.
If you leave the car on and plug in, it will do nothing (don't leave unattended in enclosed spaces as engine may start)
The car must be off first to acknowledge the plug-in.

But if you're plugged in when vehicle off and in active charge or delay/completed charge you can start the car and unplug it whenever you'd like, keeping it on and ready to drive off. You can't drive off while plugged in, the car will tell you no.
 

·
Registered
Joined
·
165 Posts
Discussion Starter #7 (Edited)
Just remember it's a one-way street.
If you leave the car on and plug in, it will do nothing (don't leave unattended in enclosed spaces as engine may start)
The car must be off first to acknowledge the plug-in.
If nothing happens with it plugged in and running there would be no need to start it with it plugged in. I was thinking I would cool the car off on grid power.


OK, I think I read your post wrong, you're talking about driving up and plugging it in while running.

I never do that. I've been turning the car off when I get home then waiting a while before plugging in.
Like let the battery cool before starting charging. But then if it's a hot day it might be better to plug it right in after I turn it off so it can run the fans etc.
Vexed and mythed.
 

·
Registered
Joined
·
4,011 Posts
If nothing happens with it plugged in and running there would be no need to start it with it plugged in. I was thinking I would cool the car off on grid power.


OK, I think I read your post wrong, you're talking about driving up and plugging it in while running.

I never do that. I've been turning the car off when I get home then waiting a while before plugging in.
Like let the battery cool before starting charging. But then if it's a hot day it might be better to plug it right in after I turn it off so it can run the fans etc.
Vexed and mythed.
If the car's been running, then the battery is cool. It gets cooled by the battery thermal management system. When you turn the car OFF, that stops, and the battery starts warming up due to ongoing chemistry stuff happening and heat conduction. You'll be better off plugging it in as soon as you pull up.
 
1 - 8 of 8 Posts
Top