You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
Makes sense, but I don't think battery loss is linear, which may be why a warranty isn't done on a graduated scale as you propose.I wish Tesla offered a warranty of degradation based on mileage. Right now it is just a 30% loss, regardless of mileage or use. There should be a curve. If we lost more than 10% by xxxxxx miles and 20% by yyyyyy miles, etc..
I know that they are just covering catastrophic range loss, but some of these losses seem significant for the miles driven. In Tesla’s recent impact report, they shared a graph that shows 10% average loss at 200,000 miles... I am almost at 10% loss by 18k miles.
Basically your question boils down to is it worse to charge it up past 90%, or worse to run it down below 10%. They're both supposedly bad for your battery, if you leave it at those levels for too long. Since you seem to need 75%, why not try 90 to 15. That's considered safe.Hi. Totally new to this forum, and to forum-posting in general. I sort of searched for this topic, but didn't find anything on here on this question specifically I have a question about charging.
I've had my Model 3 Long Range since September 2018. Pre-Covid, I did 95% of my charging at work, so I stuck to the 20% Min / 80% Max rule almost all the time.
Now, in Covid-world, I work from home, so I have to charge at home. I have a 220 outlet, but because of logistics, it's a bit inconvenient to use. SO, there are times that I want to get more range than the 20/80 allows for.
My question is this - am I being better to my battery by charging to 95%, then taking it no lower than approximately 20%, or would it be more beneficial to the long-term battery life if I charge to only 80%, but take the car down to 5 to 8 % ?
For argument's sake, lets say that I -have- to do this three to four times per month.
Again - please forgive me if I posted in the wrong place.
Thanks !
Hi. Totally new to this forum, and to forum-posting in general. I sort of searched for this topic, but didn't find anything on here on this question specifically I have a question about charging.
I've had my Model 3 Long Range since September 2018. Pre-Covid, I did 95% of my charging at work, so I stuck to the 20% Min / 80% Max rule almost all the time.
Now, in Covid-world, I work from home, so I have to charge at home. I have a 220 outlet, but because of logistics, it's a bit inconvenient to use. SO, there are times that I want to get more range than the 20/80 allows for.
My question is this - am I being better to my battery by charging to 95%, then taking it no lower than approximately 20%, or would it be more beneficial to the long-term battery life if I charge to only 80%, but take the car down to 5 to 8 % ?
For argument's sake, lets say that I -have- to do this three to four times per month.
Again - please forgive me if I posted in the wrong place.
Thanks !
Basically your question boils down to is it worse to charge it up past 90%, or worse to run it down below 10%. They're both supposedly bad for your battery, if you leave it at those levels for too long. Since you seem to need 75%, why not try 90 to 15. That's considered safe.
Because I'm a bit worried that my M3 LR battery has lost the capacity a bit too fast over 22 months of my ownership (Aug 2018 delivery), I did some calculation today.
At 75% charge (I charged up to 90% and drove a few tens of miles), the energy app showed that the projected range is 220 miles based on the average energy consumption rate of 241 Wh / mile for the last 30 miles.
That means the 75% charge level corresponds to 53.24 kWh (= 241 Wh/miles * 220 miles = 53240 Wh). At 100%, it'd be 70.99 kWh (53.24 kWh / 0.75)
M3 LR battery size is supposed to be 75kWh at the delivery. So, my M3 lost 4 kWh over the last 22 month (12k miles driven), which is about 5.3% loss over 22 months/12k miles. If the battery loss were linear with the miles driven (I know it is NOT), I'd loss more than half of the battery capacity over 120k miles.
I wonder what others have experienced with their M3. I'd rather talk in terms of kWh (the battery capacity) instead of the range/miles because the range estimate brings in a number of other factors.
Heya, so after I noticed some range loss in the car's display screen, I started using TeslaFi to record charging starting in November of 2019; after 10 months of owning my M3 (delivered 12/2018).
Batteries degrade over time, so it's not unexpected. But I'm not sure that it seems as if my m3 is perhaps a little faster degrading than what I'm reading on average. Not freaked out or upset (anymore), so, looking at it academically:
So here is my degradation chart from TeslaFi. Please note it started after 10 months of ownership after I went from 310 to about 300 max, so TeslaFi states a 4.55% loss, but if you calculate from the original day one mark of 310, I'm at about a 7% loss (see image). My max is estimated by TeslaFI to be at 286 miles now, a "loss" of 24 from the original 310.
To put context to this, I have supercharged maybe 5 times ever, and that was in the first 6 months of ownership, otherwise I exclusively charge at home on my Tesla Wall Charger. I charge almost every day (sometimes I will miss 2-3 days of charging if I'm not driving much). In addition, the first 9-10 months of ownership, I drove like a d**k most of the time, but have since mellowed out (much less stomping on the accelerator on a whim). And with COVID the past 2 months I have not driven much at all (you can see a sudden drop end of April) after which I started plugging in the car more often (you see a slow rise) and then a sudden drop again this last few weeks (with a big spike down for the week I did not charge my car at all):
View attachment 552798
I dunno if this helps anyone else comes to terms with "range loss" as it were, or if anyone can say if this is anymore or less than what they've seen, but just putting it out there...
I don't know that keeping the car plugged in affects the BMS, other than low depth of discharge cycles makes it harder for the BMS to predict the battery capacity.it seems to make sense to keep the car plugged in, when not in use, so that the BMS doesn't get confused.
I am confused by this...are you saying that balancing produces no benefit or that the service manual direction for brick balancing, by charging to above 4.0V per brick, is not required as it has been replaced by a more "sophisticated way"?5) Never try to do anything related to or for the purpose of "balancing". Tesla knows how to balance in a very sophisticated way. Bleed balancing that requires charging to over 90% is archaic. Things you might do related to advice you get about balancing are almost all harmful to the 4500 21700 cells in your battery and they produce no benefit.(By the way, balancing is related to cells in series, not cells in parallel. Weak batteries can be driven to zero or negative voltage by stronger batteries pushing current through them. When that happens, the weak cells get weaker...)