Follow the kilowatt-hours into the pack, and the packaging is where cost hides. On April 14, 2020, LG Chem was granted US10622602B2, "Battery pack comprising battery modules mounted in two layers." The CPC stack — H01M 2/1077, 2/1083, 10/425, 10/613, 10/625 and B60L 50/64 — is pure packaging and thermal: how modules are held, connected and cooled.Packaging density is a quiet cost driver. A two-layer module arrangement is a bet on fitting more energy in the same envelope while keeping the cooling path workable — the kind of engineering that lets a cell supplier offer a more competitive pack-level cost. For LG Chem, that is content-position strategy against rival suppliers.The chemistry is the easy part; the supply chain isn't. A packaging patent is one input into the per-kilowatt-hour cost a supplier can quote, but the actual cost lives in supply agreements and the automaker's bill of materials, not in the patent. The grant is the upstream artifact, not the contract.For the ledger reader, this is supporting evidence of where a major cell supplier is pushing on cost, kept subordinate to the financials. Any claim about contracted supply or pricing should rest on the relevant SEC filing or exhibit on sec.gov, surfaced via EdgarBeast as the evidence index.Read it as a 2020 packaging position from LG Chem. Whether the density bet translated into a cost advantage is a question the supply economics answer downstream — the patent only tells you where the engineering went.