Toyota / Subaru / Lexus

Toyota bZ4X AWD / Subaru Solterra / Lexus RZ 300e pack (72.8 kWh)

Lithium-ion cells from CATL · 72.8 kWh · used in 3 model variants.

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Pack reference

Lithium-ion · CATL · 355-volt, 205 Ah floor pack with 96 cells, liquid-cooled

About the pack

Capacity

72.8 kWh

as published

Fast charge

100 kW

peak · about 35 min to 80%

Warranty floor

70%

capacity floor at 8 yr / 100k mi

Pack overview

ChemistryLithium-ion

Cell supplierCATL

Cell formatNot published

Voltage (nominal)355 V

CoolingLiquid

Architecture355-volt, 205 Ah floor pack with 96 cells, liquid-cooled

Warranty 8 yr / 100k mi

Capacity floor70%

Known issues

Low

Wheel hub bolts could loosen on 2023 bZ4X and Solterra and let a wheel detach (NHTSA 22V-444, June 2022). Toyota offered U.S. bZ4X owners a buyback while the remedy was pending, and Subaru filed a second hub-bolt recall on the 2023 Solterra (23V-064). The battery was not involved.

NHTSA recall

Low

Subaru lists a 100 kW DC maximum for the Solterra in every year from 2023 to 2025, with 10 to 80 percent in 35 minutes from 2024. Toyota lists 100 kW for the 2023 all-wheel-drive bZ4X and 150 kW for 2024 and 2025.

Manufacturer spec

Low

The front-drive Lexus RZ 300e, sold for 2024 and 2025, uses this pack. Lexus calls it a 72.8 kWh CATL lithium-ion battery and gives about 35 minutes to 80 percent on a 150 kW charger, measured from the low-battery warning, with a 7 kW on-board charger. The all-wheel-drive RZ 450e uses the 71.4 kWh pack.

Manufacturer

Low

Toyota's warranty covers the traction battery for 8 years or 100,000 miles and treats capacity below 70% of original as a defect within that term.

OEM warranty

Low

Lexus covers the RZ's traction battery for 8 years or 100,000 miles and treats capacity below 70% of original as a defect within that term.

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 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

Toyota bZ4X

2023-2025 · All-wheel drive (XLE / Limited)

222-252 miEPA range

102-119MPGe

Full reliability page →

Subaru Solterra

2023-2025 · All trims (all-wheel drive only)

222-228 miEPA range

102-104MPGe

Full reliability page →

Lexus RZ

2024-2025 · RZ 300e (front-wheel drive)

196-266 miEPA range

95-125MPGe

Full reliability page →

Pack family

Toyota bZ4X AWD / Subaru Solterra / Lexus RZ 300e pack (72.8 kWh) is part of the toyota-etnga family. Related packs:

Toyota bZ4X FWD / Lexus RZ 450e pack (71.4 kWh) · Lithium-ion · 71.4 kWh
Toyota / Subaru e-TNGA 74.7 kWh (2026+) · Lithium-ion · 74.7 kWh

Frequently Asked Questions

What chemistry is the Toyota bZ4X AWD / Subaru Solterra / Lexus RZ 300e pack (72.8 kWh)?

The Toyota bZ4X AWD / Subaru Solterra / Lexus RZ 300e pack (72.8 kWh) uses Lithium-ion chemistry. Cells are supplied by CATL. Cell format has not been disclosed. Pack architecture: 355-volt, 205 Ah floor pack with 96 cells, liquid-cooled.

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 Toyota bZ4X AWD / Subaru Solterra / Lexus RZ 300e pack (72.8 kWh) 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 Toyota bZ4X AWD / Subaru Solterra / Lexus RZ 300e pack (72.8 kWh)?

Toyota bZ4X 2023-2025 (All-wheel drive (XLE / Limited)); Subaru Solterra 2023-2025 (All trims (all-wheel drive only)); Lexus RZ 2024-2025 (RZ 300e (front-wheel drive)).