*Note: Everything below about batteries is facts from the sum of a huge amount of research.
There is a lot of misinformation or misunderstandings about batteries.
The “below 90%” which was changed to “80%” is not the daily number you should charge to.
It is the maximum daily.
Going below 81% removes the “80% is recommended for daily” note.
Lithium batteries is better of with low SOC.
First of all, following Teslas recommendations and using 80% daily will not be a problem during the warranty period at least. The battery will survive.
But it will not be with the lowest degradation possible.
Teslas advices
does not aim for the lowest possible degradation. Instead, Tesla aim for the maximum possible window of usage, but still with a controlled degradation.
So, degradation is split into degradation from operation (cyclic aging) and time (calendar aging).
Cyclic aging is much less than most people think, and calendar aging is much more during the first 5-8 years than most people think.
- The calendar aging is not noticably higher at 100% than it is at 80%. Actually many tests even shows 80% to be worse than 100%. So if you charge to 80% daily, there is absolutely no need to drive asap after the 100% charge.
This picture shows a good sum of the hundreds of similar tests that the science gave us.
View attachment 1048279
Same test, fewer test SOC’s but actual Tesla model S cells taken from a almost brand new S.
View attachment 1048280
The use “stress” with batteries is often missleading. I recommend not focusing on text with such terms, like stress or microcracks etc. as they often misslead you on a bad road.
Find the charts that shows what actually happens with the capacity instead.
Many threads about degradation incorporates people stating very low degradation dedpute using 80-90% daily, and many times it has been needed to prove to them that they actually has more degradation than they thought. That part itself is not very fun, but needed to open the eyes about how batteries actually work and behaves.
@LostVector: Just answered your post as I had to use any of these posts….Not specifically aiming to your statements.