Quote from: Tash on December 29, 2021, 06:49:56 PM

Well no batteries do come with warranty. Model S and X cars have Panasonic manufactured batteries. Panasonic gives warranty and specifies a maximum charging current of 2 amperes per cell. Tesla allows charging current to be up to 4 amperes as-with voiding the warranty. Tesla decides to kill warranty by choice. Thats for the "18650" type batterie, the new inhouse made (gigafactory) 2170 type (21 mm diameter and 70 high cells) its another ball game. Other automakers excluding the engine from warranty its the end but we are talking about tesla customers....
Why is it called "Tesla" anyway, Nikola Tesla was all about alternating current (AC) and Edison direct current (DC) and even made electric cars.

No, from a technical standpoint, they don't. The "warranty" some battery manufacturers offer is a marketing trap.
You don't "choose" what charging current you will use on a battery: when you discharge a battery you form metal ions within the electrolyte. The ONLY way to dissolve those ions is to recharge the battery with a current similar to the discharge current. Otherwise, those ions will accumulate, eventually turning the electrolyte conductive, and short circuiting the battery (and, at the usual numbers on a Tesla car, most likely producing a fire or an explosion). Is not like "Elon Musk "chose" to kill the warranty", like you say. There are technical limitations to consider.