Most conversations about NDAA Section 848 compliance focus on the obvious: airframe construction, avionics sourcing, software provenance. Those are the right areas to scrutinize, and they’re the areas most manufacturers have at least some documentation prepared to address.
The component that will fail the most audits isn’t the airframe. It’s the battery.
Why Battery Compliance Is the Hardest Problem
The global lithium battery supply chain is dominated by a small number of Chinese manufacturers. CATL, BYD, and EVE Energy collectively account for a substantial share of the lithium cell market worldwide. This means that sourcing NDAA-compliant battery cells is genuinely difficult. The market alternatives exist, but they require deliberate supplier relationships, longer lead times, and higher per-unit costs.
The predictable result: a large number of “American-made” UAS platforms are wrapping Chinese cells in domestic enclosures. A US company performing the final assembly doesn’t change the country of origin of the cells inside.
What the Compliance Stack Actually Requires
True battery compliance for NDAA purposes requires documentation at multiple levels:
Cell level: The individual lithium cells must be sourced from manufacturers not covered by NDAA Section 848. Country of origin must be documented with supplier verification certificates traceable to the cell manufacturer — not the US distributor.
Battery Management System (BMS): The electronics that manage charge, discharge, and cell balancing are a separate compliance question from the cells themselves. A BMS designed around Chinese microcontrollers or with PCBs fabricated in covered countries creates a compliance problem independent of cell sourcing.
Assembly documentation: Where the pack is assembled matters and must be documented at the facility level.
Supplier chain integrity: The documentation chain must be continuous. Each link requires verification.
Why This Is Also a Reliability Question
Battery compliance isn’t only a regulatory concern. The supply chain discipline required to document NDAA-compliant battery sourcing is the same discipline that produces consistent battery quality and reliable platform performance.
Battery failure is the leading cause of UAS platform loss in operations. Manufacturers who can hand you component-level documentation for their battery pack have a supply chain tight enough to catch quality problems before they reach the field. That correlation is not coincidental.
The Question to Ask Every Vendor
When evaluating UAS vendors for NDAA compliance, ask specifically: “Can you provide cell-level country of origin documentation for the battery packs in this platform, including supplier verification certificates from your cell manufacturer?”
Vendors with compliant batteries have this documentation ready. If a vendor needs time to find it or expresses uncertainty about what the documentation should contain, you have your answer.
Forge & Flight Labs designs and manufactures NDAA-compliant UAS platforms with documented supply chains to the component level, including battery cell sourcing. Contact us for compliance documentation questions or platform procurement inquiries.