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Hybrid Battery Test

Cell manufacturer

AESC

operating

The Leaf's maker, and its yield problems forced Nissan to halve Leaf production in late 2025.

At a glance

  • Country. Japan, now Envision controlled
  • Founded. 2007 as a Nissan and NEC joint venture. Envision took control in 2018
  • Format. Pouch, and a new 46120 cylindrical cell
  • Status. Expanding in Europe, halted in America.

Chemistry

Nickel manganese cobalt.

Cell format

Pouch, and a new 46120 cylindrical cell.

In the United States

One halted site and one unknown.

Recalls and safety

None found.

Vehicles using their cells

confirmed
Nissan Leaf, all generations
confirmed
BMW iX5, with a new cylindrical cell from July 2026
confirmed
Renault 5 E-Tech from Douai

Confirmed means an automaker or supplier statement, a filing, or a recall document named it. Reported means press or analyst claim only. Several automakers dual source, so one model can carry cells from more than one maker.

Plants

operating
Sunderland Englandoperating, second plant opened December 2025
operating since June 2025
Douai Franceoperating since June 2025
halted June 2025 and still h
Florence South Carolinahalted June 2025 and still halted in July 2026, more than a billion dollars already spent. AESC was sued for 26.2 million dollars in unpaid contractor fees
status unverified
Bowling Green Kentuckystatus unverified
Read 16 September 2026. Plant status is recorded as operating, building, announced, paused or cancelled, and is not softened.

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