Toyota / Primearth EV Energy (Toyota-Panasonic JV)

Toyota Hybrid Gen5 Lithium-ion

Lithium-ion (NCM) cells from Primearth EV Energy · 1.6 kWh total (1.1 kWh usable) · used in 1 model variant.

Toyota Hybrid Gen5 Lithium-ion

Lithium-ion (NCM) · Primearth EV Energy · Compact pack under rear seat, air-cooled
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About the pack
Capacity
1.1 kWh
useable · 1.6 total
Service life
10 yr
150k mi typical
Warranty floor
see OEM warranty book

Pack overview

ChemistryLithium-ion (NCM)
Cell supplierPrimearth EV Energy
Cell formatPrismatic
Voltage (nominal)244 V
CoolingAir (cabin-fed)
ArchitectureCompact pack under rear seat, air-cooled
Warranty 10 yr / 150k mi

Known issues

Low
Gen5 Li-ion replaced NiMH on most 2023+ Toyota hybrids (Camry Hybrid, RAV4 Hybrid, Prius). Field-failure data is still limited because volumes are recent.
Owner-fleet data
Low
Cabin-vent intake is air-cooled. Blocked vents (rear-seat cargo against the inlet) are a long-standing reliability concern across Toyota hybrids and apply equally here.
TSB
Low
2023-2024 Prius and Prius Prime had a wiring-harness recall (NHTSA 24V-274) addressing potential short-circuit at a switch connector. Not a pack defect, but it ships from the same assembly process.

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: 10 yr / 150k 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

Frequently Asked Questions

What chemistry is the Toyota Hybrid Gen5 Lithium-ion?

The Toyota Hybrid Gen5 Lithium-ion uses Lithium-ion (NCM) chemistry. Cells are supplied by Primearth EV Energy. Cell format: Prismatic. Pack architecture: Compact pack under rear seat, air-cooled.

What is the warranty on this pack?

10 years or 150,000 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 Toyota Hybrid Gen5 Lithium-ion battery warranty runs 10 years / 150,000 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 Toyota Hybrid Gen5 Lithium-ion?

Toyota Prius 2023-2025 (5th gen Hybrid).

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