Tesla uses automotive-grade, Lithium-ion battery technology. These batteries do not suffer from “memory effect”.
Tesla offers three batteries, denoted by the kilowatt hours (kWh) of energy they store: 40 kWh, 60 kWh, and 85 kWh. Travelling 55 mph, the kWh figures can be translated to the stated range capabilities of 160, 230, and 300 miles, respectively.
While technically possible to upgrade from a 40 kWh battery to a larger battery at a later time, Tesla recommends configuring your Model S with the battery that meets both present and future needs.
As energy storage capacity increases, so does the total power. This results in quicker acceleration.
As energy storage capacity increases, so does the battery’s long-term mileage capability. Each battery comes with an 8-year warranty but the mileage differs.
Battery lifetime is affected by two things: age and the energy it delivers over the years. The Tesla battery is optimized for nightly charging: such topping off enhances the longevity of your battery.
The Model S battery will not lose a significant amount of charge when parked for long periods of time. For example, Model S owners can park at the airport for extended vacations without plugging in.
Accessory use does not have a dramatic impact on driving range. Range fluctuates based on vehicle speed, driving style, and road conditions. Holding these factors constant, using higher consumption accessories like climate control will reduce range approximately five to ten percent.
Model S is designed to regenerate charge when decelerating or driving downhill.
Given rapidly changing battery technology, it is impossible to accurately forecast the cost of future battery replacements.