--- title: "Qualification" canonical: "https://anchor.is/the-hysteresis/issue/4/qualification" publication: "The Hysteresis" publisher: "The Hysteresis" language: "en-US" guide: "https://anchor.is/the-hysteresis/llms.txt" permalink: "https://anchor.is/the-hysteresis/issue/4/qualification" issue: 4 section: "qualification" description: "Pack-level requirements, test conditions, and standards by application" authors: ["Ronan Adike"] published: 2026-07-06 updated: 2026-07-04 articles: 15 --- # The Hysteresis > The Hysteresis exists to give a small cross-functional team — strategy, investment, and procurement — a shared weekly instrument for reading the battery supply chain earlier than consensus. Success means the team consistently identifies inflection points in cell pricing, supplier health, and policy enforcement weeks or months before they surface in earnings calls, annual surveys, or trade press. The commercial mechanism is internal-first: the publication proves itself as a decision tool inside the organization, then extends to paid subscribers and a practitioner community as upside. Revenue follows utility — if the team makes better-timed procurement calls and competitive assessments because of what they read here, the publication earned its place. [Read on the website]() ## Issue 4 — Qualification Pack-level requirements, test conditions, and standards by application ### Posture Map - [The Qualification Posture Map]() — By [Ronan Adike]() · Published 2026-07-04 · Format: The Standards Map A document number in a DVP cell is not evidence that the standard behind it covers the failure mode, operating envelope, or test conditions the row demands. Across five target platforms, the gap between what cited standards establish and what the application requires has a different shape. This piece classifies each platform by qualification posture: settled, layered, split, borrowed, or void. The posture determines whether a DVP row is a clause lookup or a first-principles engineering deliverable, and names what commonly cited documents do not establish. ### Posture Lookup Qualification posture varies from single-standard ownership to outright void depending on the application platform. The DVP risk concentrates where that distinction goes unexamined. Some packs inherit a specification that owns scope, test sequence, and acceptance criteria in one document. Others face layered evidence packages across jurisdictions, or borrow frameworks from adjacent domains, or must define every threshold internally with no public standard behind them. Each card below maps one posture: what the governing framework covers and what it does not establish. That second line is the one your DVP depends on. Last verified: June 27, 2026. - **MIL-PRF-32565 Owns the Full 6T Ground Envelope** — [Source]() — Published 2026-07-04 Tag: Settled Standard Single standard governs scope, test sequence, First Article Testing gate, and change-control logic for 24V 6T lithium-ion packs per STANAG 4015. One document, one evidence path. Does not establish: applicability beyond the 6T form factor. Different voltage, form factor, or platform requires a separate specification. - **eVTOL Pack Qualification Needs Four Overlapping Document Layers** — [Source]() — Published 2026-07-04 Tag: Layered Evidence DO-311A or ETSO C-179b sets battery-level MOPS. Aircraft-level risk assessment per FAA AC 20-184 or EASA MOC-4 SC-VTOL layers on top. EASA MOC-3 adds propulsion-battery thermal runaway evidence as a separate gate. Does not establish: DO-311A alone does not close installed propulsion battery acceptability. - **Drone Packs Must Answer Three Separate Evidence Questions** — [Source]() — Published 2026-07-04 Tag: Split Evidence UN 38.3 covers transport eligibility. IEC 62619 or 62133-2 addresses generic pack safety. EASA UAS design verification governs operational suitability. None cascades into the others. Does not establish: UN 38.3 proves nothing about mission endurance or emergency reserve. Blue UAS platform listing proves nothing about pack provenance. - **No Dedicated Pack Standard Exists for Humanoid Robotics** — [Source]() — Published 2026-07-04 Tag: Borrowed Framework ISO 13482:2014 provides robot hazard context only; Edition 2 is at FDIS stage, not yet published. IEC 62619 is the likeliest generic industrial safety lane. Does not establish: ISO 13482 sets no pack pressure envelope, thermal propagation criteria, C-rate limits, cycle life targets, or abuse acceptance thresholds. - **UUV Subsea Packs Have No Public Settled Criteria** — [Source]() — Published 2026-07-04 Tag: Standards Void No public IEC, SAE, or MIL-SPEC document establishes pack-level pressure, mission profile, abuse, or acceptance criteria for UUV/subsea platforms. Every parameter is DVP-owned unless a customer specification governs. Does not establish: there is no public primary source to cite. ### Design Input vs. Threshold - **Machine Learning-Driven Prediction of Lithium-Ion Battery Power Capability for eVTOL Aircraft** — [Source]() — Published 2026-07-04 Tu et al. build an ML-based BMS predictor for real-time power limits under eVTOL discharge (5C takeoff/landing, 1.48C cruise), sourcing C-rate figures from Bills et al. (2023) as mission design inputs. No IEC, SAE, RTCA, FAA, or EASA document is cited as authority for any C-rate value. Evidence role: mission design input, not qualification threshold. Tier 3. DVP implication? Paper references zero governing standards for its C-rate figures. Every discharge parameter traces to engineering analyses, not acceptance criteria. Why flag this? Confirms eVTOL C-rate profiles remain pre-standard modeling constructs. Treating them as DVP pass/fail thresholds without a governing spec is indefensible. - **A Battery Dataset for Electric Vertical Takeoff and Landing Aircraft** — [Source]() — Published 2026-07-04 Bills et al. (Viswanathan group, CMU) publish the experimental dataset behind the 5C/1.48C/5C notional eVTOL mission profile now widely cited in BMS and sizing literature. High-quality cell-level cycling data, but a dataset paper with no qualification authority. Tier 3. Where do the numbers trace? The 5C hover and 1.48C cruise profile originates here as a modeling construct, not a regulatory requirement. Source quality? Published in Scientific Data (2023) with strong experimental rigor, but carries no standard-setting or certification weight. ### Settled-Lane Benchmark - [What a Settled Qualification Lane Actually Contains]() — By [Ronan Adike]() · Published 2026-07-04 MIL-PRF-32565 fixes everything. Form factor: 6T per STANAG 4015. Voltage: nominal 24V. Application: SLI and auxiliary electronics for ground vehicles, including deep-cycle and silent-watch. The spec then classifies batteries into three types gated not by capacity alone but by maximum allowable Hazard Severity Level under SAE J2464 abuse tests — overcharge and nail penetration. Type 1 permits HSL 4. Types 2 and 3 permit HSL 6. This converts J2464 from a characterization framework into a pass/fail gate, and the conversion is deliberate: the spec authors made the abuse response the type definition. ### Further Reading - **EASA Confirms DO-311A Alone Does Not Close eVTOL Propulsion Battery Certification** — [Source]() — Published 2026-07-04 Layered. Morier quotes show MOC-3 addresses thermal runaway only; remaining MOCs still undefined for propulsion packs. - **MOC-3 SC-VTOL Drives Liquid Cooling Requirements DO-311A Never Anticipated** — [Source]() — Published 2026-07-04 Layered. Technical analysis of how MOC-3 propagation resistance forces pack thermal architectures beyond DO-311A scope. - **L3Harris Li-ion AUV Pack Cleared via Navy Safety Review Board, Not a Published Standard** — [Source]() — Published 2026-07-04 Void. First submarine-qualified Li-ion AUV battery certified through WSESRB process; no governing standard exists. - **Humanoid Robot Compliance Primer Covers Four Safety Pillars, None Address Pack Qualification** — [Source]() — Published 2026-07-04 Borrowed. Maps ISO 13482, UL 3300, IEC 61508 for humanoid robots; battery pack qualification absent from all frameworks. - **MIL-PRF-32565 Active but Zero Vendors on QPL — Settled Spec, Unproven Pipeline** — [Source]() — Published 2026-07-04 Settled with gap. Stryten confirms the standard exists and applies; no vendor has completed qualification listing. - **Epsilor Details MIL-PRF-32565C Test Categories for 6T Li-ion Qualification** — [Source]() — Published 2026-07-04 Settled. Names bullet penetration, 500°C heat exposure, temperature envelope, and cycle life as DVP-relevant tests. ## Other sections in Issue 4 - [Signal]() - [China]() - [Korea]() - [The Log]() - [Defense]() ## More - [Publication guide]() - [Issue archive]()