Compliant Without Confessing

TLDR: NDAA Section 842 does not want a vibe. It wants more than 95% of your functional-cell-component cost proven non-FEOC, and it verifies directly. That is not a passport, it is a full background check on your bill of materials. So stop trying to dodge disclosure and start controlling who does the reading: a neutral investigator, not the customer who sits on your competitor's board.

Every defense-battery conversation eventually hits the same wall. A buyer asks a supplier to prove the cell is NDAA-compliant, and the supplier goes quiet. Not because they are hiding something dirty, but because "prove it" now means "open your bill of materials," and the bill of materials is the entire company.

Let's get into it.

Quick vocabulary first, because every fiscal year gets its own NDAA (National Defense Authorization Act) and its own rules, so "NDAA-compliant" always begs the follow-up: which one, and which section. We defined the whole alphabet in Uncle Sam's Battery Glossary. Here is the term that matters now. FY2026 Section 842 says a covered DoD battery or cell has to be assembled by a non-FEOC entity, source more than 95% of the cost of its functional cell components from non-FEOC (Foreign Entity of Concern) sources, and use no FEOC-licensed technology. It phases in from 2028 through 2031.

That 95% is the whole story.

You cannot certify at the cell level and stop. To prove that number, you have to price and trace almost every input: cathode, anode, separator, foils, electrolyte salts, and the additive package that is half a percent of the mass and most of your edge. Graphite makes it harder, since China dominates anode material and "where was this actually processed" is one of the toughest questions in the supply chain to answer honestly. This is exactly why "assembled in America" and "NDAA-compliant" are not synonyms.

Because the BOM (bill of materials) is the IP, and often it is the only IP. The exact formulation, the additive recipe, the supplier list: that is the thing a competitor would pay real money for. Hand it to an OEM and you may be handing it to their other cell supplier. Disclosing to your customer is not a neutral act, it is competitive exposure. The stonewalling is rational, not stubborn.

This is where the clearance model earns its keep. You do not dodge the background check. You route it through a neutral investigator. A qualified third party sees the full BOM and cost buildup under NDA and issues the compliance determination, and the customer gets the verdict, not the recipe. A battery passport or chain-of-custody record can then carry that verdict and the provenance data downstream without ever exposing the formulation.

The catch is that this only works if the investigator is genuinely independent and genuinely rigorous. A certifier your customer controls is just disclosure with a nicer letterhead, and a certificate built on unverified graphite origin is a liability, not a shield.

The industry keeps hearing "show me your papers" and panicking like it means "show everyone everything." It doesn't. Build the clearance system, and you can sell to the DoD without publishing your lab notebook to the person angling for your job.