Reliability

Volvo / Polestar

Volvo / Polestar CMA pack (78 kWh, LG cells)

NMC (ratio not published) cells from LG Energy Solution (cells and modules) · 78 kWh total (75 kWh usable) · used in 3 model variants.

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Pack reference

NMC (ratio not published) · LG Energy Solution (cells and modules) · 27 modules, 400-volt class
About the pack
Capacity
75 kWh
usable · 78 total
Fast charge
155 kW
peak
Warranty floor
70%
capacity floor at 8 yr / 100k mi

Pack overview

ChemistryNMC (ratio not published)
Cell supplierLG Energy Solution (cells and modules)
Cell formatNot published
Voltage (nominal)396 V
CoolingLiquid
Architecture27 modules, 400-volt class
Warranty 8 yr / 100k mi
Capacity floor70%

Known issues

High
NHTSA 21V-110 (February 2021) covers certain 2021-2022 Polestar 2 vehicles. The Battery Energy Control Module's microprocessor may reset and disconnect the high-voltage system. The software is updated by a dealer or over the air, free of charge.
High
NHTSA 21V-109 (February 2021) covers 2,278 XC40 Recharge vehicles from 2021-2022. The Battery Energy Control Module's microprocessor may reset and disconnect the high-voltage system. Dealers install a software update free of charge.
Low
Two packs share these model names in 2024. Volvo's EPA filing puts this 78 kWh LG pack (75 kWh usable) in the dual-motor Polestar 2 and the XC40 and C40 Recharge Twin, and an 82 kWh CATL pack in the single-motor cars. Polestar lists 155 kW DC charging for this pack against 205 kW for the other.
Low
The heat pump is optional, in the Polestar 2's Plus Pack from the 2022 model year. Polestar says it helps increase real-world driving range by approximately 10% between 20°F and 77°F.
Low
Polestar covers the battery and electric motors for 8 years or 100,000 miles. From the 2025 model year it also covers capacity below 70% of original within that term.

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 to 70% capacity.

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

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.

21V110000 Feb 24, 2021 ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:MANAGEMENT SYSTEM/ENERGY CONTROL MODULE (BMS/BECM):SOFTWARE

Polestar Automotive USA, Inc. (Polestar) is recalling certain 2021-2022 Polestar 2 vehicles. The Battery Energy Control Module (BECM) microprocessor may reset and cause the high voltage system to disconnect.

Consequence: A disconnected high voltage system can cause a loss of drive power, increasing the risk of a crash.

Filed against: Polestar Polestar 2 2021-2024

21V109000 Feb 24, 2021 ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:MANAGEMENT SYSTEM/ENERGY CONTROL MODULE (BMS/BECM):SOFTWARE

Volvo Car USA, LLC (Volvo Car) is recalling certain 2021-2022 XC40 Recharge vehicles. The Battery Energy Control Module (BECM) microprocessor may reset and cause the high voltage system to disconnect.

Consequence: A disconnected high voltage system can cause a loss of drive power, increasing the risk of a crash.

Filed against: Volvo XC40 2021-2024

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

Pack family

Volvo / Polestar CMA pack (78 kWh, LG cells) is part of the volvo-cma family. Related packs:

Frequently Asked Questions

What chemistry is the Volvo / Polestar CMA pack (78 kWh, LG cells)?

The Volvo / Polestar CMA pack (78 kWh, LG cells) uses NMC (ratio not published) chemistry. Cells are supplied by LG Energy Solution (cells and modules). Cell format has not been disclosed. Pack architecture: 27 modules, 400-volt class.

What is the warranty on this pack?

8 years or 100,000 miles, with capacity coverage to 70% of original. 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 Volvo / Polestar CMA pack (78 kWh, LG cells) battery warranty runs 8 years / 100,000 miles to a 70% capacity floor, 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 Volvo / Polestar CMA pack (78 kWh, LG cells)?

Polestar Polestar 2 2021-2024 (All versions 2021-2023; Dual motor only for 2024); Volvo XC40 2021-2024 (XC40 Recharge 2021-2023; Recharge Twin only for 2024); Volvo C40 2022-2024 (C40 Recharge 2022-2023; Recharge Twin only for 2024).

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