[pforret]

> What percentage should I charge the battery to? > > For regular use, we recommend keeping your car set within the 'Daily' range bracket, up to approximately 90%. Charging up to 100% is best saved for when you are preparing for a longer trip. You can adjust how full the battery charges from the charge settings menu. > [tesla.com/support/home-charging-installation/faq](https://www.tesla.com/support/home-charging-installation/faq)

> There are two reasons: charging performance and battery longevity. Most of the time you should only charge an EV to 80% because charging rates slow down dramatically past the 80% mark. And two, the long-term health of your vehicle’s battery pack is improved when kept below 100%. > [witricity.com](https://witricity.com/newsroom/blog/the-80-rule/)

[jtc331]

The “charging slows down” is only true for DC fast charging. If you’re charging at home it doesn’t have an effect because the ratio of input energy to battery size is already so small.

[josephcsible]

That's only true of NMC batteries, not of LFP ones, which their Model 3 SR now ships with. With LFP batteries, it's better for them to charge them to 100%.