Ford

Ford Fusion Energi 9 kWh pack (2019-2020)

Lithium-ion cells from Panasonic · 9 kWh · used in 1 model variant.

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Pack reference

Lithium-ion · Panasonic · 307-volt pack of 84 cells, 122 kg, in the trunk

About the pack

Capacity

9 kWh

as published

EV-only range

—

limited data

Warranty floor

—

see OEM warranty book

Pack overview

ChemistryLithium-ion

Cell supplierPanasonic

Cell formatNot published

Voltage (nominal)307 V

CoolingAir (cabin-fed)

Architecture307-volt pack of 84 cells, 122 kg, in the trunk

Warranty 8 yr / 100k mi

Known issues

High

NHTSA 23V-440 (June 2023) covers all 14,452 Fusion Energi cars from 2019 and 2020. Gas build-up in a battery cell can trip its current interrupt device and send excess voltage through the battery control module, which can cut drive power or start a fire around the module. Ford knew of seven fires when it filed. Dealers replace the high-voltage battery and load software that lowers the maximum state of charge by 11 percent. Owners were told not to charge until repaired.

NHTSA recall

Low

NHTSA 19V-099 (February 2019) covers 2,108 Fusion Energi cars from 2019 that fell short of the federal standard for shielding high-voltage parts. Dealers fit a cover over the high-voltage fuses.

NHTSA recall

Low

Ford raised the pack to 9 kWh for 2019. Its spec sheet lists air cooling and a full charge in 2.5 hours at 240 volts or seven hours at 120 volts; EPA lists 2.6 hours.

Manufacturer spec

Low

Ford covers hybrid components, the battery included, for 8 years or 100,000 miles. Under California's transitional zero-emission vehicle rules the high-voltage battery is covered for 10 years or 150,000 miles.

OEM warranty

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 floor on this pack: 8 yr / 100k mi.

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

Ford Fusion

2019-2020 · Fusion Energi (plug-in hybrid)

26 miEPA electric range

102-103MPGe

Full reliability page →

Battery-Related NHTSA Recalls

Recalls affecting battery, charging, electric propulsion, or thermal-event systems on vehicles using this pack, as of the last complaint-data run. Each campaign names the model generation it was filed against; the summary gives the model years covered.

23V440000 Jun 23, 2023 ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:MANAGEMENT SYSTEM/ENERGY CONTROL MODULE (BMS/BECM)

Ford Motor Company (Ford) is recalling certain 2019-2020 Fusion PHEV vehicles. The battery energy control module (BECM) may become damaged due to excessive voltage and current flow.

Consequence: A damaged BECM can result in a loss of drive power or fire, increasing the risk of a crash.

Filed against: Ford Fusion 2019-2020

For TWD editorial coverage of major recall campaigns, see /recalls/.

Pack family

Ford Fusion Energi 9 kWh pack (2019-2020) is part of the ford-fusion-hybrid family. Related packs:

Ford Fusion Hybrid nickel-metal hydride pack (2010-2012) · NiMH (nickel-metal hydride) · 1.5 kWh
Ford Fusion Hybrid lithium-ion pack (2013-2020) · Lithium-ion · 1.4 kWh
Ford Fusion Energi 7.6 kWh pack (2013-2018) · Lithium-ion · 7.6 kWh

Frequently Asked Questions

What chemistry is the Ford Fusion Energi 9 kWh pack (2019-2020)?

The Ford Fusion Energi 9 kWh pack (2019-2020) uses Lithium-ion chemistry. Cells are supplied by Panasonic. Cell format has not been disclosed. Pack architecture: 307-volt pack of 84 cells, 122 kg, in the trunk.

What is the warranty on this pack?

8 years or 100,000 miles. Specific terms vary by year and trim; check the manufacturer's warranty booklet for the exact vehicle.

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. The Ford Fusion Energi 9 kWh pack (2019-2020) battery warranty runs 8 years / 100,000 miles, which is the OEM-guaranteed minimum within that period. Individual results vary with climate, charging habits, and DC fast-charging frequency.

Which vehicles use the Ford Fusion Energi 9 kWh pack (2019-2020)?

Ford Fusion 2019-2020 (Fusion Energi (plug-in hybrid)).