When should a Tesla Model 3 battery be replaced?  

Although the lifespan of your Tesla Model 3 battery can be impacted by a number of circumstances,

you should expect to replace it once every 8-10 years.

The battery's lifespan is directly related to the number of charge cycles it undergoes  

and the care that is taken with the vehicle, including how it is stored when not in use.

All Tesla batteries use lithium-ion cells and are constructed with durability in mind. As a result of this innovation,

the battery may keep 80% of its original capacity despite being driven for tens of thousands of miles.

Tesla claims its battery has a range of over 200,000 miles.