Drivers who already have their vehicles but want to upgrade batteries can do so for $20,000.
The upgrade would make the vehicles "P100D" models, higher-end versions of the cars, where 100 measures the battery power.
The Model S P100D will start at $134,500, and the Model X 100D will start at $135,500.
Tesla said in its statement that upcoming Model 3 sedan vehicles, expected to sell for $35,000, will have the 100-kilowatt battery.
Without customers willing to buy the expensive Model S and X, we would be unable to fund the smaller, more affordable Model 3 development.
"While the P100D Ludicrous is obviously an expensive vehicle, we want to emphasise that every sale helps pay for the smaller and much more affordable Tesla Model 3 that is in development," the company said in a statement.
"Without customers willing to buy the expensive Model S and X, we would be unable to fund the smaller, more affordable Model 3 development."
The LaFerrari and the Porsche 918 Spyder can outrun the Tesla Model S sedan.
Is Tesla's Model S the 'fastest production' car?
An investigation by Jalopnik has determined Tesla as the fastest production car in the world, however, it is tied in the top spot with Porsche.
Jalopnik pointed out while technically the Model S is not the fastest as that would imply top speed, it is in fact the quickest going from 0 to 60 mph.
