Well no batteries do come with warranty. Model S and X cars have Panasonic manufactured batteries. Panasonic 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.