[Dormant] Electric Vehicles

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TIL it's better to charge a little every day than let your battery get low before recharging. (www.youtube.com)

submitted 9 months ago by [email protected] to c/[email protected]

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From "Engineering Explained." He says that as you charge/discharge, the random orientation of microcrystalline structure in the battery combined with expansion/contraction due to Lithium migration results in forming cracks in the particles, which then results in reduced battery capacity. I've been letting my battery get down to 50% or so before bothering to charge back up to 80%, I may default to 70% and charge after every trip instead. (For a Volvo with NMC chemistry I'm not sure if I have "high nickel content" and would benefit form staying below 75% or not.)

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[–] [email protected] 13 points 9 months ago (1 children)

It's actually true - Any battery has a nominal percentage at where to both discharge and charge to, to extend battery life by a great deal.

E.g for your phone, it's roughly at 30% to discharge to and 70-75 to charge to.

You don't have to do this though!

And think about it .. if Elon can sell you a new battery faster than expected ... It's not like there's any reason for him to tell you about this 😂

[–] [email protected] 5 points 9 months ago

What many people don't seem to get is that the phone will lie to you for your own benefit, reporting 100% full when it is actually 75-80%, and adapting that as the battery ages. So you usually don't need to do this manually.