Reliability

Tesla

Tesla Model S / Model X 100 kWh pack (2016-2020)

NCA (nickel-cobalt-aluminum) cells from Panasonic · 100 kWh · used in 2 model variants.

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Pack reference

NCA (nickel-cobalt-aluminum) · Panasonic · Panasonic 18650 cells in liquid-cooled modules; about 350 volts average in EPA tests
About the pack
Capacity
100 kWh
as published
Fast charge
—
limited data
Warranty floor
—
8 yr; mileage terms vary

Pack overview

ChemistryNCA (nickel-cobalt-aluminum)
Cell supplierPanasonic
Cell format18650 cylindrical
CoolingLiquid (ethylene glycol and water)
ArchitecturePanasonic 18650 cells in liquid-cooled modules; about 350 volts average in EPA tests
Warranty 8 yr; mileage terms in the notes below

Known issues

Medium
Warranty terms depend on when the car was bought. Tesla's warranty effective January 29, 2020 gives Model S and Model X 8 years or 150,000 miles with at least 70% capacity retention, and says cars bought earlier keep the terms in force on the day they were bought.
Medium
Before January 29, 2020, Tesla's Model S and Model X warranty covered the battery for 8 years with no mileage limit and no capacity guarantee.
Low
In Tesla's EPA filing a 2019 Model S Long Range discharged 100.4 kWh in the full-depletion test at an average of 352 volts, and a Model X Long Range 97.9 kWh. A Standard Range Model S discharged 74.4 kWh.
Low
Tesla said in April 2019 that Model S and Model X, using the same 100 kWh battery pack, could now charge at 200 kW on V3 Superchargers and 145 kW on V2 Superchargers.
Low
Tesla added the 100 kWh pack with the P100D in September 2016 and the 100D in March 2017, according to its EPA filings.
Low
Tesla's 2022 Impact Report put average Model S and Model X range loss at less than 12% after 200,000 miles, a fleet figure not broken out by pack size.
Low
The displayed range can fall without a matching loss of battery capacity. Tesla's warranty calls range estimates "an imperfect measure of Battery capacity because they are affected by additional factors separate from Battery capacity."

How this pack ages (industry context)

Industry fleet aggregates: 2.3% average annual capacity loss across 22,700 EVs / 21 models (Geotab, 2026), and 95% range retention at 5 years on average across 30,000+ vehicles (Recurrent, 2026).

OEM warranty on this pack: 8 yr, with mileage and capacity terms that depend on the pack and on when the car was bought. See the notes on this page.

Public per-pack degradation curves are not available for most models. Individual results vary materially with climate, charging behavior, and DC fast-charge frequency.

Vehicles using this pack

Pack family

Tesla Model S / Model X 100 kWh pack (2016-2020) is part of the tesla-sx-legacy family. Related packs:

Frequently Asked Questions

What chemistry is the Tesla Model S / Model X 100 kWh pack (2016-2020)?

The Tesla Model S / Model X 100 kWh pack (2016-2020) uses NCA (nickel-cobalt-aluminum) chemistry. Cells are supplied by Panasonic. Cell format: 18650 cylindrical. Pack architecture: Panasonic 18650 cells in liquid-cooled modules; about 350 volts average in EPA tests.

What is the warranty on this pack?

This database has no confirmed battery warranty terms for the Tesla Model S / Model X 100 kWh pack (2016-2020). Most US-market EVs carry 8 years / 100,000 miles, but check the manufacturer's warranty booklet for this vehicle before relying on that.

How much does this pack degrade over time?

Industry-wide fleet aggregates show roughly 2.3% average annual capacity loss across 22,700 EVs (Geotab, 2026), with about 95% range retention at five years on average across Recurrent's 30,000+ vehicle fleet (2026). Public per-pack degradation curves are not available for most models, and this database has no confirmed warranty floor for the Tesla Model S / Model X 100 kWh pack (2016-2020).

Which vehicles use the Tesla Model S / Model X 100 kWh pack (2016-2020)?

Tesla Model S 2016-2020 (P100D (from 2016), 100D (from 2017), and the 2019-2020 Long Range, Long Range Plus and Performance); Tesla Model X 2016-2020 (P100D (from 2016), 100D (from 2017), and the 2019-2020 Long Range, Long Range Plus and Performance).

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