The Hysteresis | Qualification

The Standards Map

The Qualification Posture Map

By Ronan Adike— July 4, 2026

Feature image for article: The Qualification Posture 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.

The Standards Map

The Qualification Posture Map

By Ronan Adike— July 4, 2026

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.

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.

Settled Standard

MIL-PRF-32565 Owns the Full 6T Ground Envelope

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.

Layered Evidence

eVTOL Pack Qualification Needs Four Overlapping Document Layers

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.

Split Evidence

Drone Packs Must Answer Three Separate Evidence Questions

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.

Borrowed Framework

No Dedicated Pack Standard Exists for Humanoid Robotics

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.

Standards Void

UUV Subsea Packs Have No Public Settled Criteria

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

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

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.

Design Input vs. Threshold

Machine Learning-Driven Prediction of Lithium-Ion Battery Power Capability for eVTOL Aircraft

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.

Design Input vs. Threshold

A Battery Dataset for Electric Vertical Takeoff and Landing Aircraft

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

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.

The operating envelope runs −46°C to 71°C, with storage to −54°C/88°C and environmental qualification against MIL-STD-810G and MIL-STD-461F. CAN bus reporting per SAE J1939 is mandatory. The FAT gate resets on any change in design, material, process, or facility.

Every DVP row has a source, and that is what "settled" means. As of early 2025, no Li-ion 6T battery had achieved QPL-32565 listing. The spec is fully written and the lane is empty, which tells you something about the distance between a complete qualification framework and a qualified product. When you measure your application's gap, measure it against a lane where the gap is only execution.

Settled-Lane Benchmark

What a Settled Qualification Lane Actually Contains

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.

The operating envelope runs −46°C to 71°C, with storage to −54°C/88°C and environmental qualification against MIL-STD-810G and MIL-STD-461F. CAN bus reporting per SAE J1939 is mandatory. The FAT gate resets on any change in design, material, process, or facility.

Every DVP row has a source, and that is what "settled" means. As of early 2025, no Li-ion 6T battery had achieved QPL-32565 listing. The spec is fully written and the lane is empty, which tells you something about the distance between a complete qualification framework and a qualified product. When you measure your application's gap, measure it against a lane where the gap is only execution.

TAKE NOTE

Status: Active, Rev C Amdt 2, document date August 4, 2022; DLA data updated July 3, 2026. Next review due August 3, 2027.

Scope: Rechargeable sealed 6T Li-ion, nominal 24V, STANAG 4015 form factor, ground vehicle SLI and auxiliary electronics only.

Weight limit: 30 kg, all types.

Capacity (min, 1-hr rate, 22°C): Types 1/2: 55 Ah · Type 3: 90 Ah.

Cranking at −40°C: Types 1/2: 200 A for 30 s · Type 3: 400 A for 30 s.

Abuse test framework: SAE J2464 — overcharge, nail penetration, short-circuit, crush, drop, projectile penetration; protections active and bypassed.

Type gate: HSL classification under abuse, not capacity alone. Type 1 (HSL ≤4) vs. Types 2/3 (HSL ≤6).

Battle override: Permits operation below normal cutoff voltage; discharge/charge must not exceed HSL 1.

Comms: SAE J1939 / J1939-81 CAN bus integration required.

QPL-32565: Active but no Li-ion products listed as of early 2025. Active certification campaigns reported (Epsilor, Type 2).

Fleet scale: ~600,000–700,000 6T positions across DoD platforms.

Last verified: July 4, 2026