Oh I see. So the 58kwh is with the buffer including. I always thought the buffer is after u hit 0 miles on the dash??
Anyway I'm very happy even in this weather ;*)
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How is my LFP battery holding up after 2 years?
- Thread starter kelvin 660
- Start date
Anyway I'm very happy even in this weather ;*)
If you go Beta in SmT you can get a graphical readout of your battery, like what's shown below;
You can see how my battery was when new and where it is now. Plus how the buffer is used to offset 0% to give a reserve of ~10 miles...
Note: my car is currently at 85% SoC.
You can see how my battery was when new and where it is now. Plus how the buffer is used to offset 0% to give a reserve of ~10 miles...
Note: my car is currently at 85% SoC.
I took delivery of my 62kWh(bulk) RWD six months ago. At 6 months and 4,000 miles, Tesla fi reports it is 2.9% down. I'm not especially bothered. If it kept loosing capacity at the same rate, it would qualify for warranty repair in six years. I do not expect that to happen.
I think you should all try the Tesla Battery Health test under service menu. 
My 2019 Model 3 Performance shows 279 miles at 100% . Originally 299 miles. So a 7% loss. However I did the Tesla Battery Health test which drains to zero and charges to 100% over 24 Hours. That says my Battery health is 86% a 14% degradation. Much worse than just comparing the estimated range now vs new. I think the Tesla Health test would be more accurate. 
My 2019 Model 3 Performance shows 279 miles at 100% . Originally 299 miles. So a 7% loss. However I did the Tesla Battery Health test which drains to zero and charges to 100% over 24 Hours. That says my Battery health is 86% a 14% degradation. Much worse than just comparing the estimated range now vs new. I think the Tesla Health test would be more accurate. I watched this earlier, interesting in places, the LFP batteries seem really good after an initial drop and hardly degrade after 50k miles, the performance models all seem to suffer though more than the others and the bigger US battery in the M3 Performance (at least I think the performance gets a different battery and )not the LG Chem battery the China built LR cars get) appears noticeably worse.
Hi @Roger61 I think your car may of had a 310 mile range at 100% when new, making the degradation more like 10%...
Anyway, I'll have to give the Tesla battery health test a try out, when I have some spare time and see how it compares with SmT or using the consumption graph calculation method...
teslamotorsclub.com
Anyway, I'll have to give the Tesla battery health test a try out, when I have some spare time and see how it compares with SmT or using the consumption graph calculation method...
Calculating Your Battery's Estimated Capacity Using the Car's Energy Screen
Re posting here and making this a sticky post so it doesnt get lost. @AlanSubie4Life originally posted: =========================================== (originally posted by @AlanSubie4Life. Original thread this appeared in can be found here: ( 2021 model Y scan my Tesla battery size)...
teslamotorsclub.com
All this data doesn’t tell us anything new about LFP as it’s just mileage based at this point. LFP suffers from less cyclic aging than NCA, sure. But what about calendar ageing? I feel that it might be worse. Especially with all these cars sitting at 100%. There are quite a few other downsides to LFP too, so I personally don’t think it’s the superior chemistry - unless you’re doing huge mileage in a short space of time.
I'm following a SR+ on TeslaFi (Flinchy) that is the same age as my car, but has travelled 167,000 miles. His degradation is -5.58% and my car at 25,600 miles is also at -5.58% That basically tells me that it's not loosing range due to cyclic aging or lots of supercharging but is loosing range due to calendar aging.
Personally, I like the LFP batteries as you can leave them at 100% SoC without feeling bad about it. Yes, in the winter regen isn't as strong but at least the brakes get a good workout and it stops them from seizing up in all that salty water...
As a plus, they are more difficult to catch fire if you get into an accident.
Personally, I like the LFP batteries as you can leave them at 100% SoC without feeling bad about it. Yes, in the winter regen isn't as strong but at least the brakes get a good workout and it stops them from seizing up in all that salty water...
As a plus, they are more difficult to catch fire if you get into an accident.
Yeah that’s the conclusion I have also come to after looking at a lot of data in regards to calendar ageing. Unfortunately I do still feel guilty charging to 100% and losing regen half way down a hill annoys me. Weight is another downside, but agree they are safer. Although when my LFP car was crashed into recently, the emergency services still had a quite a freak out about it catching fire etc.
kaimanson
Member
I'm being thinking the same thing. Time has move effect on the battery than the charging cycles.
There is still more calendar aging at 100% than at 60% for LFP. There is the same step as NCA, but the step is at a higher SOC.
There are some long threads on the Model 3 Battery subforum. Lots of discussion including multiple peer reviewed chemistry articles.
Model 3 SR+ LFP Battery Range, Degradation, etc Discussion
Show me data please : Someone who has been charging to 100% all the time the last 2 years. Vs Someone who hasn't in the last 2 years. How about come back in 2, 5 years and compare with a similar car which didn't Otherwise lots of scientific papers which suggest higher degradation if...
teslamotorsclub.com
I only charge to 100% once a week and it may be left at that SoC for 3 - 4 hrs. That's less than 2% of the batteries lifetime at 100%.
On average my battery is at 60% SoC. I don't feel that is too bad for the batteries health and complies with Tesla's requirements.
After all the car is for using and not just for looking at...
On average my battery is at 60% SoC. I don't feel that is too bad for the batteries health and complies with Tesla's requirements.
After all the car is for using and not just for looking at...
I've picked up my model 3 rwd in December 2022. Since then I've done 34k miles. I'm charging daily to 100%. From new it was showing 272 miles at 100%. now it's shows 262. I never gol bellow 40% but yesterday decided to see how many miles I can do on full charge.
I was pleasantly surprised to do 245 miles which 80% was motorway driving and there was still 6% left. To fully charge the car i needed 56 kwh, really happy with that. Tessie app says my battery capacity is 57.9kwh and degradation at 3.9%
I was pleasantly surprised to do 245 miles which 80% was motorway driving and there was still 6% left. To fully charge the car i needed 56 kwh, really happy with that. Tessie app says my battery capacity is 57.9kwh and degradation at 3.9%
Similar age to mine Feb 23 with 9k on the clock and I’m seeing 261 at 100%. Seems the factor is aging more than miles. Hoping now it’s over the first year it levels out for longer.
It certainly does for me. I've had very little degradation over the second year. In the battery research literature they model calendar aging with time as approximately sqrt(T). That is sometimes an approximation to something else much more complicated but the actual chemistry and physical changes are very complex and not fully known there isn't any first principles derivation. The sqrt(time) is the simplest empirical approximation.
