It's the same with some in the NMC group . Tesla does not say charge to 80%. They just recommend 80% as the max for daily driving. It also does not mean cannot charge above 80%. And it also does not mean you can't set the charge limit at 50%. But people charge to 80% when they don't need to - because they think that's what Tesla says .
www.recurrentauto.com
Why 85%. (rhetorical question)
Jeff Dahn videos on battery degradation informed my approach. I try to charge my NMC battery often within a narrow state of charge set to match my usage (short trips). I tend to operate between 50% and 70% ... could make that 40% to 60% which would be even more battery-friendly but given I expect my battery to degrade minimally anyway I don't fuss.
Narrow depth of discharge is the best .
That doesn't seem to match the science though. AAKEE has posted many papers that all show lower degradation at low SOC. This applies whether it's NCA, NMC, or LFP. When it comes to storing your car for extended periods the lower the SOC the better.
In the spirit of continuous improvement I'll knock my max charge to 60% and see how I go.
I don't need 40% min Soc . Have more than enough reserve with 30% minimum SoC (AKA arrival back home SoC).
Note that Tesla recommends max SoC when transporting batteries by air is <28% SoC. I could make "arrival back home Soc" 20% but occasionally need to go out again at short notice.
You are right. I just like having the extra range if I need to use it. But I'm thinking 85 is really too high for daily max and I may go down to 70% and see if I'm comfortable with the miles I have at the end of the day there. I drive about 80 miles total each day for my work commute. I'd like to have at least 100 left after that. So I can charge to a much lower setpoint and it should help my battery. Recurrent sent me another link on the subject:
From your signature I see you have an older battery. I had a 2015 Model S and I traded it because it felt like an anvil was hanging over my head, at $21k for a new battery. Are you going to drive it 'till it dies? Have you connected with ScanMyTesla to see how many cycles you've used? I was at 750 cycles when I traded mine. They only go for 1000-1500 per what I've read.
I keep my cars for an average of about 12 years so intend to keep it for a while longer. If I have to replace the battery I will just add another couple of years beyond to make up for the cost of the replacement.
A statement with no real evidence - did the Chargefox app show my 100% charge in February when I needed 100% to get back to North Brisbane and also show that I was the only one there at the 4 stalls? Did that count as hogging in the stats?
This has nothing to do with LFP though. In the rare instances where someone thinks they have to charge to 100% every time, that's an issue with that persons misunderstanding of the technology.
Where does it say Tesla? LFP? Reason for charging to those limits? Queue?
