navguy12
Active Member
Thanks for the data points.Left for a trip on Friday, Jan 11th ((Model 3 LR AWD). Coming in to YYZ from about an hour away (100 km). The morning of Jan 11th charged to ~95%, around 480 km range. It was cold. Ended up arriving and parking at the airport with 352 km range remaining (78% range efficiency).
Arrived back on Sat, Jan 19th. Range display showed 250 km. So effectively lost 102 km range with the car sitting there ~8 days (12 km/day loss). This seemed quite high to me. Coincidentally the car decided to download the 2018.50.5 firmware update over LTE while it was parked there. I got the update notification on Wednesday. I ended up launching the update on Saturday morning before my flight departed (after checking the range was sufficient to get home).
Anyway, I had enough charge to get home (return 100 km trip used 155 km range, or 64% efficiency). So I had more than enough for this round trip+parking but ultimately was somewhat disappointed by the 12 km/day range loss.
I knew there were some J-1772 chargers at YYZ as a backup. They are surprisingly low power at 6.6 kW. Didn't end up using them as I saw them as a waste of time.
TLDR: Round-trip to YYZ from 100 km away. Charged to 480 km. Returned back with 95 km. Parked for 8 days. Total range used: 385 km; actual distance traveled: 200 km. Lost 185 km for parking and cold effects.
12 km/day loss (a.k.a 2.4% a day versus the advertised 1% a day).
Not surprised with the cold weather as some battery conditioning will take place at these cold temperatures.
Over a year ago I had e-mailed Tesla with some proposed owners manual amendments.
Nothing came of them, of course, but here is a screen shot of one of them dealing with real world vampire drain in cold temperatures (ignore anything that ties into the non-existent "energy savings mode" that was supposed to be part of the Model 3 way back when):
From thread: Model 3 Owners Manual, proposed amendment 2018.01.07.1722
From the snipped above (that I first posted 07 Jan 2018), if one parks within the temperature range of -1c and -15c, I had proposed 3% a day "with energy savings mode on".
Looks like 3% a day may be the viable planning number when parking at the airport over winter periods.