What are your thoughts on charging best practices ?
They say NMC battery is best to keep between 20%-80% range, and it is better to charge from 20%. Some say LFP can go up to 100% , yet others believe it is still battery hence better to use 80% max rule of thumb. For your friend that does intermittent charging, is it bad for the battery ? I have read claims that it is best to start charging from 20%.
I learned from a video Tesla has all the charging data from their customers for more than a decade. The conclusion was fast charging or slow charging makes no difference to the battery life, at least up to 10 years. Yet people are saying fast charging is bad for battery. On the other hand, BYD is talking about megawatt charging. If fast charging is bad, what is BYD talking about ?
First I must say that I don’t have an EV and what I know are from what I read and also numerous YouTube videos that talks about charging habits for battery types and battery degradation.
For NMC batteries, charge to max 80% and only to 100% when you are going for long trips. Below 20% and above 80% are worse off for NMC batteries.
For LFP batteries. It is perfectly fine to charge to 100%. In fact, it is recommended to charge to 100% at least once a month so that the battery can calibrate itself. That’s why I will only go for LFP. No point getting Long Range NMC when at 80% is about the same as 100% for LFP. Having said that, charging speed slows down above 80% so that’s a win for NMC. Just that LFP is also safer
From what I saw, intermittent charging is perfectly fine as long as you keep to the charging recommendation based on your battery type.
As for fast charging and slow charging, it is inconclusive