12 months different battery "care" comparison

[MiamiBlueEvo]

Well, I just want to share this with you as my first post here... I own a 2022 Model Y P with 17600 miles & around 6000kwh used and a 2022 Model 3 P with 20738 miles and the same 6000kwh used, two different charging methods for both, the Y has been charged a lot more at superchargers and to 100% since we used it for a lot road trips (90% for daily use), the model 3 was charged strictly to 80% in a level 2 charger every day and it has been in a supercharger just 5 times over 12 months, it has been charged to 100% 3 times only... so two different ways to keep the battery alive... I thought it will have different results...

So I'll share the pictures from the health test I did for both cars...

The model Y has 92% SOH after being "beaten" with a supercharger almost half of her life and charging it to 90% when needed (not plugged daily since I have free level 2 charger at work and I take it with me every few days to charge it)... and the model 3 has 91% SOH after being charged 99% of the time on a level 2 charger to 80% since I bought it, charging it every day but Sundays (I charge it always at work) and it has been just 5 times to a supercharger station...

I really was hoping to get a "big win" from the model 3, since it has been charged in the most battery friendly way... but in this case it lost against a more standard-rough charging method...

So, what should I think about it, I should still care how I charge my cars? (well I got used to, so I'm not going to change the way I charge both cars)... why the model 3 lost this battle? I really was expecting a very different result from the model 3, and I got the expected result from the Y...

I'll do this test in a year and see if something changes for worse (or better)...

Thank you all for reading this...

 

[MiamiBlueEvo]

Btw, I don't know why I said the Y has been supercharged almost half it's life, since it was not...

 

[mgs333]

Thanks for the detailed post. It seems like supercharging doesn't seem to affect the battery that much and I've seen other posts that say the same thing.

I think what matters more is what soc the battery remains at for most of its life and yours were both at 80% or more which from data I've seen doesn't impact battery health that much. (Whenever it's at 80 vs 90 vs 100) I've seen better battery health if it's kept at or before 55% most of its life.

 

[E90alex]

80 vs 90% makes negligible difference. 50-55% could potentially have yielded better battery health.

 

[DaanB]

I read an article the other day that they did a really extensive test with over 1k cars supercharges vs slowcharged. They found no significant difference in the state of the battery. Ill try to find the article. Your findings seems to support tis too though

 

[DaanB]

here it is Tesla Supercharging Does Not Significantly Affect Battery Life, Study Reveals.