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Lithium Ion batteries don't like being completely full or completely empty. They're happiest somewhere in the middle. Teslas allow you to set the max charge %
by cptskippy 5y ago
Lithium Ion batteries don't like being completely full or completely empty. They're happiest somewhere in the middle.
Teslas allow you to set the max charge %. The interface has changed over the years but it's more or less a slider allowing you to set the max charge %. In it's latest incarnation you can do 1% increments, in the past it was less granular.
When you plug the car in, an interface appears on the main display allowing you to adjust the % as well as charge rate and some other things. You can also adjust the settings from the App on your phone.
Typically you'd set it to X% and forget about it until you were planning a road trip then you might crank it up to 100% either the night before or while sitting at a supercharger.
- itsyaboi 5y ago> Teslas allow you to set the max charge % This should really be a standard OS feature on Android phones.
- cptskippy 5y agoIt's been alleged that when some EVs report 0% charge, they're just preventing you from over draining the battery and damaging it. I wish they'd put bounds on both ends of the battery like that.
- itsyaboi 5y agoAbsolutely correct. IIRC teslas (at least older models, not sure about recent ones) use standard 18650 lithium ion cells. Discharging those past a certain voltage (~2.5v?) will permanently damage the cell and is prevented by the battery management subsystem. In theory it is possible to keep driving the car past a "0%" charge, assuming the safety systems could be bypassed, but you would never get the same range/acceleration on subsequent charges. Worst case would need am entirely new battery pack.