My Tesla 3 SR is only 4 months old with 4000 miles. It’s range has dropped from 273 miles to 267 miles at 100% charge, that is 2% in 4 months time. Is this normal? Anyone experienced same issue?
LFP BATTERY Degradation
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Jeffyin
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They don't "prefer" to be charged to 100%. They just tolerate it better. They should be charged to 100% often to calibrate the BMS, but, like any Lithium based battery, they are best kept near their nominal voltage, which is at 20-80%. They are not optimal standing at 100% for a long time.
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LFP batteries are not light - they are a little heavier than the equivalent NCM battery.
Both LFP and NCM are types of lithium ion batteries.
We weren't talking storage here, we were implying for daily use.
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batteries don't discharge exactly even and when charging the same might be true. I have found out tire pressure can change the range also. Weather conditions are also a variable on range, such as wind and rain. If anything was wrong Tesla would notify you. Aerodynamics is a big part so also use a good cleaner and wax, I use Jay leno products. Don't worry its all good.
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This part of your post may be a bit misleading. Tesla is not likely to contact you of their own accord when there is an issue. But you may have meant "your Tesla" will notify you. And this likely is true.
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Mine is even worse than you. I got my model 3 on 12/31/22 and I used the free supercharger at 100% once a week. I saw 5 miles battery degradation (From 272 to 267) within 2 months with 2000 miles. Friends suggested to set 80% only, I will try it,
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Were you not receiving the notification to not charge to 100%
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This thread is about LFP cars. Tesla specifically says to charge them to 100%
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no. Actually i got notification to charge to 100% at least once a week after I set to 80%.
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that is true. I don't know what caused such a degradation for my model3 (5 miles in only two months with 2000 miles)
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10-20%
Well, there is information in lots of places that charging to 100% is certainly not good or desirable even for LFP batteries, and that Tesla only recommends it so BMS would be calibrated more often. Nobody is going to sue them if their battery degrades a little faster than it theoretically could if they didn't charge to 100% every week, but they may have a good case if it miscalculates and leaves them stranded on the road when it said they should have 10% charge left. When me and others try to raise that point, they quote the user manual.
Again: charge LFP just like regular battery to 70-80% usually, then from time to time to 100% to calibrate just before a longer drive.
Again: charge LFP just like regular battery to 70-80% usually, then from time to time to 100% to calibrate just before a longer drive.
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isn't that the opposite of what Tesla recommends?
If your vehicle is equipped with an LFP Battery, Tesla recommends that you keep your charge limit set to 100%, even for daily use, and that you also fully charge to 100% at least once per week.
Just as expected, someone immediately opens the user manual and quotes that sentence from it, as I predicted in another part of the same message.
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Rather than snark, perhaps you could supply some references for the "lots of places" that you refer to. If we are misinformed by Tesla, your assistance would be appreciated.
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I'm not sure why you would expect anything different when you make claims that run counter to Tesla's recommendation, but don't provide any supporting evidence. Sure, it's more work for you to hunt down the sources again, but it's an opportunity to educate people about a subject that you've already learned.
The video you included in a previous post was quite informative. It does a good job of explaining why Tesla makes this recommendation even though it leads to quicker degradation in LFP packs.
Sorry if my comment came out as "snark", but I found it funny that in the sentence prior the the one quoted I said someone will probably respond in that way, and they did. I also assumed that people who engage in a discussion read the whole thread, where I already put the link. Anyway, apologies, only trying to be helpful.
BTW I recently took a VERY long read trip in my M3 RWD and I was charging to 70-80-90% up to 10 times in a row, and I never experienced any "jumps" in displayed percentage, so the need for calibration may not be as large as we think.
BTW I recently took a VERY long read trip in my M3 RWD and I was charging to 70-80-90% up to 10 times in a row, and I never experienced any "jumps" in displayed percentage, so the need for calibration may not be as large as we think.
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You did not put the link in this thread. I found it in another thread:
LFP batteries: does charging to 100% harm them?
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I'm glad @garsh found your earlier post supporting your opinion. That helps me to understand your position. But absent any more persuasive evidence, I'm going to continue to trust Tesla's guidance. They've got more to lose than you, me, or any other owners.
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