DaveinOlyWA wrote: ↑
Sat Mar 13, 2021 8:00 am
SageBrush wrote: ↑
Fri Mar 12, 2021 12:07 pm
DougWantsALeaf wrote: ↑
Thu Mar 11, 2021 8:32 pm
That's great for a 2013 Leaf.
Yeah, and I'd llke to take some credit but I honestly think Nissan batteries have lousy QC so for all I know I was lucky and got a good pack.
Not buying that. I have found that most EVers don't tell all when explaining their charging habits. You are simply more aware of what needed to be done and found ways to do it easily. Later versions w/o custom charge settings just encouraged people to think "Nissan took care of it" so I don't have to w/o realizing Nissan was the ONLY manufacturer w/o custom charge settings. They deluded themselves into thinking it didn't matter.
You really wouldn't believe what people do under the impression they are being a "good EVer" and then recommending it to new EVers.
I obviously *think* I know ways to prolong battery life or I wouldn't be doing them, but Doug is right: anecdotes just do not mean much. In part because conditions vary from car to car and from climate to climate; in part for the reasons you mention; and in part I suspect because of wide variation in battery quality from the factory.
I do agree that some of the things that owners do in the name of battery protection make me shake my head. Closed garages in hot climates is a leading example. How would my battery look today if I had started out with a poor quality battery and then carried out all my 'good' behaviors ? I don't really know, but I doubt I would be happy with my battery.
I am by no means trying to say that 'good' behaviors are a waste of time -- far from it. I am saying that we should all be humble in drawing too strong a conclusion how much any one strategy or explanation explains (or does not explain) the car battery health. All we really know, based on battery research and large group analysis, is that heat , fast charging, prolonged high SoC, and Li plating are all degradation accelerants and when present at the same time their effect is greater than their sums. Specifics are lacking, so all we can do is minimize exposure to these risks within the context of keeping the car a useful device for our use cases.