3 ms·
>"The Tesla superchargers currently charge at around 2% a minute up until about 80% which is 40 minutes to hit 80%." I am curious what exactly happens at 80%,
by bogomipz 9y ago
>"The Tesla superchargers currently charge at around 2% a minute up until about 80% which is 40 minutes to hit 80%."
I am curious what exactly happens at 80%, does that 2% a minute rate drop off precipitously? If so what is the reason for that?
- flyingspork 9y agoLithium Ion batteries are generally charged using a two step process of constant current then constant voltage. https://www.digikey.com/en/articles/techzone/2012/nov/constant-voltageconstant-current-devices-optimize-li-ion-battery-charging-for-energy-harvesting https://www.digikey.com/en/articles/techzone/2012/nov/consta... If 80% is the set point to switch over from constant-current to constant-voltage, then yes, the charge rate will drop continuously until it reaches full charge.