The cost of a battery for a Tesla varies depending on the specific model and the capacity of the battery. Tesla offers different models, such as the Model S, Model 3, Model X, and Model Y, each with different battery options.

The cost of a battery can also vary depending on market conditions, any subsidies or tax benefits, and the region you are in. Furthermore, costs may differ between new batteries and replacement batteries.

To find out the specific cost of a battery for a Tesla, I recommend visiting the official Tesla website or contacting a Tesla dealer. There you can find information about the available models, battery options, and associated prices.