I do NOT know for Tesla. However, I know for older Nissan Leafs that a level 1 charger slightly degraded the battery each time, same with the DC fast Charging. The optimal charging solution for battery health was a level 2 charger.
I wonder if this is still true today, and if so is it the same for all cars? And also, does it make a difference in battery health between the lower end level 2 charger at 30amps to some of the newer ones pushing 80amps.
Another dumb question on a totally different subject. I'm finding for my normal use the 110 charger is adequate. I have yet to need to pull out the 220 for my normal weekly commute. Is the 110 charger better for the batteries, or should I just use the 220 all the time? I've only been charging to 80% unless I know I have a long trip the next day, which will happen almost never.
The main thing that causes degradation in lithium-ion batteries is heat. For many chemistries, sitting fully charged is a close second. (Yes, other things like charge cycles and extremely low charge are worse, but those are things we know about that are generally well controlled outside the cells themselves in any modern Li-Ion battery.)
The research I've seen on this is that the level 1 (120V) charging is ever so slightly worse than low-amperage level 2 charging because even though it doesn't heat the battery up nearly as much, it does so for a much longer time, since the 120V charging is also less efficient in addition to the obvious lower power.
So, the absolute best thing to do in theory is to charge at 240V and 12-20 amps. However, it really doesn't make enough of a difference to worry about, so I have no issue with plugging in at 120V/15A or 240V/40A. And given Tesloop's experience with their high-mileage Teslas with most of it being L3 DCFC/Supercharging, I wouldn't worry about this much, in a Tesla.
In other brands, it's worth paying attention to whether the battery is air or liquid cooled (liquid is far better) and how the BMS is programmed to handle heat. Nissan's early Leafs had terrible degradation in hot climates, for example. Hopefully there's enough hive knowledge in the industry at this point that some of the manufacturers who are relatively new to BEVs won't make these same mistakes over again.
Just curious if there is a way to pull this data from the Tesla other than looking at the console? I've been a hyper miler long before hybrids even, so yeah, speed and rain make a huge difference.
Several sites/apps to do this. TeslaFi, Nikola, Stats for Tesla, TezLab are some examples. Being a data geek I got all of the above, but haven't decided which one(s) I'm keeping once my first year is up yet.