e-TRNL Energy is redesigning the battery cell itself rather than its chemistry

Almost all battery innovation happens inside the cell, not to it.

Researchers keep changing the cathode, the electrolyte, the anode.

But the physical design, how the layers are wound, stacked and packaged, has stayed roughly the same for decades.

That design shapes a lot more than people realise.

How the cell sheds heat, how fast it can safely charge, how much of its volume is usable versus packaging, and how cheaply it can be made- much of this tends to follow from the architecture, not just the chemistry.