Charging - daily or not?

[Reign of Ravens]

When it is time to charge, you should only "fill up" to 80%. Basically, he recommended charging to 80% and not charging again until you're at 10%.

Keeping the battery in that 20-80% of charge is the common refrain for lithium ion batteries. Yet Ford and Tesla recommend not charging above 90%, rather than 80% (not that 80% would cause issues). I suspect the difference in what is commonly said and what the companies recommend may have to do with the hidden buffers in the batteries. 100% is not truly 100%, just as 0% is not truly 0% with most EVs.

I've read a number of opinions on what should be done, including charging to 100% every now and then to reset battery state or some such thing. A lot of people are trying to extrapolate from laptop and cellphone batteries and behaviors. To a certain degree you can, but I don't imagine it's 1:1. I'm also wary of opinions on the internet, and the "expertise" behind them. A battery is a battery, but the application, environment, and surrounding technologies are different.

Wish I knew more, and I'm always interested to read thoughts and theories, but until there's actual data behind it... I'll just follow what Ford recommends.

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