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According to what I've read, high SoC of 90% vs 100% is a large, appreciable difference. Anything below that you're basically fighting for scraps. Something like 3-4% over 200k+ miles.So, 20-80% charge cycle is optimum for battery life?
So, 20-80% charge cycle is optimum for battery life?
Elon Musk on TwitterWhy do people say that you must charge your car batteries to only 80%. We have Tesla batteries in our home and we charge them to 100%. Why the difference?
It’s not a big deal. Charge to 90% to 95% & you’ll be fine. At 100% state of charge, regen braking doesn’t work, because the battery is full, so car is less energy efficient.
Different purpose, different usage. Plus the top/bottom buffers, are going to be different as well, so 100% for your Powerwall means something different than 100% for your car.Why do people say that you must charge your car batteries to only 80%. We have Tesla batteries in our home and we charge them to 100%. Why the difference?
Why do people say that you must charge your car batteries to only 80%. We have Tesla batteries in our home and we charge them to 100%. Why the difference?
You are just looking for dots to show that it is limited, but partially limited regen still isn't that much of a difference in driving feel. At 100%, it is downright startling when you pull your foot back off the pedal, and nothing happens as the car continues to GO like a runaway train! So that's why the quote has some relevance.I dislike Elon's quote about regen not working at 100%. It starts to limit at around 83% in my experience, and is quite noticeably limited above 90%.
everything i've read in this thread supports most articles, discussions and reports i've come across so far. however, the one thing i'm not 100% certain of is this:
doesn't Tesla already "conservatively limit" the batteries in each and every vehicle to help protect the lifespan of the entire drivetrain? that is to say, 100% is not ACTUALLY 100%, etc. this is true in most li-ion battery applications as the charge rates/cycles for li-ion is so "poor" to begin with that by conditioning an acceptable "range" actually promotes a longer (artificial) lifespan of the battery.
for me, personally, based on the reports that the difference between 80% and 90% is so negligible that I charge to 90% on a daily basis. I have a 70-80 mile commute, every day, and am back and forth once I do get home on most days. based on my current 240kwh driving average, i'm usually home with a battery around 40-50%. could I live with 80%? probably. but I like the peace of mind and if the effects are so minute, i'm ok with my current SoC plan.