greenne
Well-known member
- First Name
- Nathan
- Joined
- Jul 13, 2021
- Threads
- 27
- Messages
- 1,894
- Reaction score
- 2,305
- Location
- Niskayuna, NY
- Vehicles
- 2022 Lightning (Ordered 6/19, delivered 10/28/22)
Yep, my excel was put together in 2 minute at work on lunch. Sloppy. Thanks for recognizing and correcting, I sincerely appreciate that.
However my point was more that the size of battery is not relative. The amount of miles driven and efficiency of the vehicle is.
And the main point is $70 is real money, and could change someones decision if the rate of charge made a difference on efficiency.
My argument has nothing to do with 240v vs 120v. Yes 120v is inadequate for 95% use cases of charging the lightning. My point was you have stated several times that 120v charging does not warm the battery and does not serve a benefit. You are 100% wrong unless you have data to show me otherwise.
My very brief write up on 120v stated the following.
- 15 amp connecting using AMPRoad EVSE set to 16 AMP
- Charging at 11.2 amps (per Lightning 120v limitations)
- Plugged in at 9:38 PM (65% SOC, 71.65 kWh)
- Start Temp: HVB Min 41 F/ HVB Max 42.8
- Unplugged at 7:07 AM (12.55kWh used) (70.5% SOC, 82.63kWH)
- Temp: HVB Min 53.6 F/ HVB Max 55.4
- Preconditioning was set occur at 6:55
- Ambient Garage temp was 43 F the whole time.
- Summary added ~12.5 F in 10h 30m. 11 kwh added
My conclusion: Even 120v charging is a temperature benefit. Since Only 1.5kWh was "lost" between what the charger used and what the battery gained I would conclude that 120v was enough to warm the battery a decent amount ~12.5F.
Could there be more loss at colder temps that then makes 120v less practical? Maybe I dont know that. I'd love for less conjecture on the matter and more data.
All this said... Since you seem to have all the answers please do us all a solid and answer these questions for me and others that have been wondering similar things about their trucks.
1) At what low temp does the truck warm the battery for protection when unplugged.
2) At what high temp does the truck cool the battery for protection when unplugged.
3) At what low temp does the truck warm the battery for protection when plugged in. Does a charging schedule affect this trigger point or not?
4) At what high temp does the truck warm the battery for protection when plugged in. Does a charging schedule affect this trigger point or not?
I have decided that I don't like hooking the truck up every night to 48A to top off. (I got my reasons). Up until now, I have been going from full-20% and then doing one deep charge about 1x every 5-7 days. I understand if I leave it out in the cold I lose range each day and am OK with that as my commute is ~18mi each way(36mi per workday).
So here's my question--
If I plug up to 110v overnight and assume I get minimal charging(for this scenario lets assume 0% added and all the energy goes towards preconditioning--warming--the battery)...
Will the increased efficiency on my drive due to a warm battery (say I go from 1.8 mi/keH to 2.0) be more energy it took to warm the battery(overnight energy cost)?
Another way to put this..is it worth it to plug into 120v outlet if the only thing I am getting is battery warming for increased efficiency on the morning drive?
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