Polestar 5 Will Use This Unique Type of Battery

• Polestar reveals it will use SK On's high-nickel-content pouch-type cells in the 2025 Polestar 5 four-door GT.
• The pouch-type cells produced by South Korea's SK On promise greater energy density, faster recharge cycles, longer range, and greater thermal safety.
• The four-door GT will compete with several other luxury electric sedans currently on the market, in a segment that has seen a lot of attention in the past several years but could now be facing a cooling period.

We've known for a while that Polestar's electric flagship would aim to offer buyers performance and range, with the EV maker set to make a statement with the arrival of its sleek and chiseled four-door GT.

But until this week, Polestar had not shared just what type of battery we'd see in the EV maker's 2025 model.

It turns out Polestar has opted for the high-nickel content of South Korean battery maker SK On's pouch-type cells. The innovative cells feature a nickel content of almost 90%, which promises a high energy density and a longer driving range along with fast recharge cycles and efficient discharge cycles.

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«Polestar 5 is developing at pace and will feature this high-capacity battery to provide the performance expected of our grand tourer,” Polestar CEO Thomas Ingenlath said.

The battery maker's pouch-type ultra-long 56-cm cells are created via what it calls a Z-folding technique, when stacking separators that are inside the battery. In this manner, the separators are arranged evenly in a zig-zag manner, in order to prevent the contact between anodes and cathodes, and to reduce stress inside the battery.

»The separator zig-zags through the anode and cathode and wraps them with perfect alignment, and therefore allows complete separation. This way, the possibility of the anode and cathode coming into contact on the outer edges is reduced fundamentally," the battery maker notes.

SK On’s Z-folding technique is claimed to yield much greater thermal safety, as well as greater energy density, than other current types of lithum-ion batteries.

SK On also says the Z-folding technique is not subject to possible misalignment of battery components that