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> 3. Avoid fast chargers

Isn't this primarily due to heat produced? Aka cool fast charging is better than warm slow charging.

I seem to remember a tweet I think by Mishaal Rahman (or another android journalist) on this.

Yes that's absolutely the case. So it just depends on how good the cooling system is. For a phone, it has no active cooling system. For an electric vehicle, almost all manufacturers (except Nissan Leaf) have adopted active cooling and you can expect them to do a good job activating adequate cooling for the battery.

In absolute terms, cooler isn't always better.

For example, Tesla has a pre-heat function for their cars' batteries that can be used prior to charging.

https://www.tesla.com/ownersmanual/model3/en_us/GUID-F907200...

That affects charging speed, not battery longevity.

It can affect battery longevity. If you charge lithium ion at cold enough temperatures, you get lithium plating which rapidly degrades capacity and can lead to internal shorts and fires.

It's due to heat produced, gas generated from overvolting the battery, and stress gradients from different levels of charge across the battery.

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