Battery capacity comes from the Tessie app, as do some of the other numbers. Is there a specific calculation you want me to explain?Please tell me how you calculate or where did you get the battery capacity value ?
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Battery capacity comes from the Tessie app, as do some of the other numbers. Is there a specific calculation you want me to explain?Please tell me how you calculate or where did you get the battery capacity value ?
Hello - sorry if this may have been asked in the community already. Got an M3 LFP 2022. What is the best practice in terms of charging if the car is parked in the driveway for 30 days (no access to it, car would just be in the driveway for 30 days)? Driveway has access to a 40a 240v outlet with a Tesla charging station. Should the car be left plugged in at 100% for 30 days? Or leave it plugged in at a lower SOC, say 80% and leave it at 80% for 30 days? Or leave it plugged in at 50% SOC and weekly increase it by 10% or so via the app and increase it by some % weekly so by the time 30 days is up the SOC would be 100%? Thanks for any input/insights you may be able to share.
Thank you!The easy no hassle way for long term parking:
- Leave it plugged in set to 50% to minimize battery degradation from high state of charge and also to avoid self-discharge below 0%.
- When you get back, charge it to 100% just before you drive off to take care of BMS drift.
Winter update #2: It's is now -30C and the car "supercharges" at 22kW, even with a long precondition. It, in fact, gets SLOWER as time goes on, not faster, as I don't think the heater can keep up with how cold it is outside. I'm not sure I would even be able to charge if I wasn't heating my garage.
Driving around town, I get between 220-280Wh/km, sometimes as high as 300Wh/km for efficiency. Keep that in mind.
From what it looks like, I'm somewhere around 50% range loss, and charging speed reduced to 25% of the usual summer rate. Typically my car charges at around 80kW for most of the charge, peaking at 150kW for the first 15 minutes. This car is definitely going to struggle with winter road trips. Even going to the ski hill is not possible unless they have destination charging.
That's probably not degradation but a loss of BMS accuracy because you haven't been charging to 100% regularly, as recommended in owners manual. My 2022 M3 RWD shows 266 miles range with a full charge at ~15500 miles on the clock.Got a 2923 M3RWD in 10/31 and it has about 1200 miles on it. I only did one 100% full charge from 30% once. Idk y drive it often and normally charge it from 30% to 60% or 70%.
I am going to drive a lot tomorrow so I am charging it to 100%. I have noticed the full charge would only have 270 miles vs the 272 miles from the brand new one.
Even it is only 2 miles degradation but I thought it is only 1200 miles and degradation should not happen that soon.
I am super OCD. Is this normal to have the battery degradation at do early stage?
I would urge you to change the display to percentage instead of range. It will be open season for your OCD to do these calculations and worry something’s wrong becasue it’s a couple miles off. You will see fluctuations in many different readings. They‘re all estimates trying to incorpo many factors. Try your best to just enjoy the car and trust that it’s doing what it needs to to keep the car as healthy as possible for you. Becaause it is.Got a 2923 M3RWD in 10/31 and it has about 1200 miles on it. I only did one 100% full charge from 30% once. Idk y drive it often and normally charge it from 30% to 60% or 70%.
I am going to drive a lot tomorrow so I am charging it to 100%. I have noticed the full charge would only have 270 miles vs the 272 miles from the brand new one.
Even it is only 2 miles degradation but I thought it is only 1200 miles and degradation should not happen that soon.
I am super OCD. Is this normal to have the battery degradation at do early stage?
I am also using the % but I also check the miles vs % and calculate the ‘expected full charge mileages’.I would urge you to change the display to percentage instead of range. It will be open season for your OCD to do these calculations and worry something’s wrong becasue it’s a couple miles off. You will see fluctuations in many different readings. They‘re all estimates trying to incorpo many factors. Try your best to just enjoy the car and trust that it’s doing what it needs to to keep the car as healthy as possible for you. Becaause it is.
Thanks and I will do the 100% full charge regularly. In my case, I feel like once a week is too much as the car wil just sit on high SoC most of the time.That's probably not degradation but a loss of BMS accuracy because you haven't been charging to 100% regularly, as recommended in owners manual. My 2022 M3 RWD shows 266 miles range with a full charge at ~15500 miles on the clock.
Did you preheat on the way to the supercharger? Did you use the nav system?Update #5: it is -32 but the car was out in the cold all day. Took it to the supercharger and it would not charge at all. Left after 25 minutes of battery warming with zero kWh added. Warning to all other cold weather people out there! I'd be completely ****ed if I didn't have a heated garage.
Yes.Did you preheat on the way to the supercharger? Did you use the nav system?
That's pretty much what I do with Tessie (see sig).Hey all! Just picked up my Tesla MY RWD, what are your thoughts on my plan to charge this LFP?
Car is now on 100% and now I will drive it till it’s between 50% to 40% and then will charge it back up to 100%
Meanwhile during the week I will keep the charger plugged in but not charging as I have read somewhere this is the advice given from Tesla
Only issue with this is I have scheduled overnight charging so I will have to turn that off when not charging