Urgent charging question - resolved

JohnFoxeSheets

Well-Known Member
First Name
John
Joined
Jan 29, 2022
Threads
28
Messages
3,406
Reaction score
5,504
Location
San Francisco
Website
johnfoxesheets.com
Vehicles
2022 Iced Blue Silver Mach E GT
Occupation
Retired Engineer
Country flag
UPDATE: I just arrived home with 32% SoC. All’s well. (@Mach-Lee recommended that I stop the preconditioning since - paraphrasing - the priority should be getting electrons into the battery, not making the battery be in a condition to accept more.)

Thanks to all who replied!

I’m at an Airbnb with a 40A charger. Last night it should have fully charged but a bit before 1AM the circuit breaker tripped. (No idea why - the car has been charging since 9PM and the owner has used the charger many times in the past and it’s a 50A breaker.) I didn’t discover it until this morning. The car is charging again now. Checkout is at 11AM.

My question is: I have preconditioning set up for today, but I’m wondering if I should turn it off since obviously it will take away power that would otherwise go to the battery (but at the same time a warm battery chargers fast). Temps overnight we’re in the upper 30’s and I’d guess it’s in the low 40’s now.

Any thoughts?
Sponsored

 
Last edited:

Ghost Ryder

Well-Known Member
Joined
Sep 19, 2021
Threads
25
Messages
1,900
Reaction score
2,376
Location
LA
Vehicles
Tesla MYP, 22 GTPE
Country flag
I don't think it makes much difference. you should almost be fully charged if you've been charging for total of 8 hours. If you need additional range, just use heated seats and not the cabin heater.
 

MachEMaster

Well-Known Member
First Name
Will
Joined
Jan 25, 2022
Threads
27
Messages
1,052
Reaction score
1,212
Location
Canada
Vehicles
1997 GMC Yukon GT
Occupation
Aircraft Maintenance Engineer
Country flag
If you are still plugged in to the L2 charger, and have a departure time set, it will Pre-condition without drawing from your battery. What is your state of charge right now?
 
OP
OP
JohnFoxeSheets

JohnFoxeSheets

Well-Known Member
First Name
John
Joined
Jan 29, 2022
Threads
28
Messages
3,406
Reaction score
5,504
Location
San Francisco
Website
johnfoxesheets.com
Vehicles
2022 Iced Blue Silver Mach E GT
Occupation
Retired Engineer
Country flag
SOC is now at 63%. It’s been charging this morning since about 7:10AM PST.
 

MachEMaster

Well-Known Member
First Name
Will
Joined
Jan 25, 2022
Threads
27
Messages
1,052
Reaction score
1,212
Location
Canada
Vehicles
1997 GMC Yukon GT
Occupation
Aircraft Maintenance Engineer
Country flag
If you are still plugged in to the L2 charger, and have a departure time set, it will Pre-condition without drawing from your battery
SOC is now at 63%. It’s been charging this morning since about 7:10AM PST.
I think you should almost be at 100% by 11am. At 40 amps you should add 10% per hour. I would just stay on schedule.
 


OP
OP
JohnFoxeSheets

JohnFoxeSheets

Well-Known Member
First Name
John
Joined
Jan 29, 2022
Threads
28
Messages
3,406
Reaction score
5,504
Location
San Francisco
Website
johnfoxesheets.com
Vehicles
2022 Iced Blue Silver Mach E GT
Occupation
Retired Engineer
Country flag
Thanks guys. It’s at 67% and still charging; I definitely will have enough to get home. Oh, and the Airbnb host partially refunded our rental for the trouble. ?
 

Deleted member 16048

Guest
Thanks guys. It’s at 67% and still charging; I definitely will have enough to get home. Oh, and the Airbnb host partially refunded our rental for the trouble. ?
That’s nice of Airbnb to do! Definitely not the normal there so great customer service!
 

TheVirtualTim

Well-Known Member
First Name
Tim
Joined
Oct 11, 2020
Threads
26
Messages
1,366
Reaction score
2,469
Location
Dearborn, MI
Vehicles
‘21 Mach-E First Edition, ‘23 Mach-E GT Performance
Country flag
The batteries like to be above 40°. And since the temps are pretty close to that already ... you can probably just skip pre-conditioning.
 
OP
OP
JohnFoxeSheets

JohnFoxeSheets

Well-Known Member
First Name
John
Joined
Jan 29, 2022
Threads
28
Messages
3,406
Reaction score
5,504
Location
San Francisco
Website
johnfoxesheets.com
Vehicles
2022 Iced Blue Silver Mach E GT
Occupation
Retired Engineer
Country flag
That’s nice of Airbnb to do! Definitely not the normal there so great customer service!
The refund came directly from the host - not Airbnb. But it was nice if him to do so. We didn’t ask for anything.
 
 







Top