This is Paper C of the C02 note on tactical and military radios, covering the evidence a pack has to produce before it is accepted: the environmental, electromagnetic, interoperability and cryptographic tests, the nickel-cell standards, and the transport rules. It explains what each standard actually governs rather than treating certification as a single stamp, then maps the order in which the evidence is collected and documented. MIL-STD-810 covers the environment, MIL-STD-461 covers electromagnetic compatibility, STANAG 4370 and the AECTP series give the NATO path, JITC and the waveform conformance process cover interoperability, and the NSA chain covers the cryptographic modules; underneath those, the nickel cells and packs are qualified to IEC 61951-2 and IEC 62133-1 and ship under UN 3496 with the IATA A199 not-restricted air path. No test is presented as optional where a procurement requires it, and no claim is made that a battery certificate covers the radio or vice versa.
Key fact 1. MIL-STD-810 is environmental engineering, not a single pass mark. Its methods are tailored to the platform and cover high and low temperature, thermal shock, humidity, rain, salt fog, sand and dust, vibration, shock and explosive atmosphere, among others. The test program selects the methods that match the real service environment rather than running every method blindly, and the results are recorded in a test report with the method and severity used.
Key fact 2. MIL-STD-461 governs electromagnetic compatibility for military equipment, including emissions and susceptibility. The current revision, MIL-STD-461H, was published in April 2026 and supersedes MIL-STD-461G from 2015. A radio and its pack must not emit interference that affects neighbouring systems and must continue to operate when exposed to interference, which is a different requirement from the environmental tests.
Key fact 3. NATO standardises the environmental path through STANAG 4370, which adopts the Allied Environmental Conditions and Test Publications, including AECTP-230 for climatic conditions and AECTP-200 for electronic equipment acceptance. This lets allied forces share a common environmental basis rather than accepting only national test results.
Key fact 4. Interoperability and cryptography are certified separately. The Joint Interoperability Test Command and the waveform conformance process establish that a radio works with joint and allied networks, while the NSA certifies the cryptographic modules, including Type-1 equipment for classified information, with keys and handling controlled as Controlled Cryptographic Items. A radio can pass environmental tests and still fail interoperability or security, which is why the layers are independent.
Key fact 5. The battery layer uses nickel standards and a non-restricted transport path. IEC 61951-2 covers sealed nickel-metal-hydride performance and IEC 62133-1 covers safety of sealed nickel-containing cells and packs, where the -1 part is nickel and the -2 part is lithium. Surface transport uses UN 3496, and air freight is treated as not restricted when IATA special provision A199 is met; nickel packs do not use the lithium UN 38.3 or UN 3480 numbers.
The environmental program begins by characterizing where the radio will serve - dismounted carry, vehicle mounting, airborne use or static deployment - and then selecting the matching methods. High and low temperature tests run the radio and pack at the storage and operating extremes, thermal shock covers rapid transitions, and humidity and rain tests expose the sealing and contacts. Salt fog checks corrosion of the housing and terminals, sand and dust tests the sealing and moving parts, and vibration and shock cover vehicle and handling environments, including the pack retention so the cells cannot shake loose. Where the equipment enters a fuel or explosive atmosphere, the explosive-atmosphere method limits ignition risk. The methods and their severities are documented in the test plan rather than treated as a fixed checklist, and the same housing that protects the radio protects the cells, which is why the pack geometry is part of the environmental evidence.
Electromagnetic compatibility has two directions. Emission tests limit the conducted and radiated energy the radio and its charging circuits produce, so they do not interfere with other equipment, while susceptibility tests expose the radio to defined electromagnetic fields and transients and require it to keep operating. The requirements are maintained through revisions: MIL-STD-461G was issued in 2015 and MIL-STD-461H in April 2026, so a current program references the revision named in the procurement rather than an older edition by habit. The charger and any battery eliminator are included in the EMC assessment because their power conversion is a potential emission source, and the vehicle and airborne power interfaces add their own transient requirements.
For NATO programs, STANAG 4370 provides the common environmental framework by adopting the Allied Environmental Conditions and Test Publications. AECTP-230 defines climatic conditions and their geographic categories, while AECTP-200 covers acceptance of electronic equipment through defined environmental tests including temperature, humidity, vibration and shock. The value is interoperability of evidence: equipment tested against the agreed AECTP basis can be accepted across allied forces without a wholly new national test program. A supplier working on a NATO project therefore identifies the AECTP references in the tender and aligns the test report to them, while national standards such as the MIL-STD series remain in use where the procurement is national rather than allied.
Interoperability evidence is separate from the physical tests. The Joint Interoperability Test Command and the waveform conformance process verify that a radio implements the required waveforms correctly and joins joint and allied networks, including the frequency-hopping and MANET modes described in Paper A. A radio that cannot synchronize with the network fails interoperability regardless of its environmental rating. The cryptographic chain is independent again: the NSA certifies the cryptographic modules, Type-1 equipment is approved for classified information and controlled as a Controlled Cryptographic Item, and the key fill and handling procedures are part of the security evidence. Modern modules use validated algorithms such as AES-256, while non-Type-1 radios serve sensitive-but-unclassified missions; the certification matches the information class rather than being assumed from the radio's appearance.
Beneath the system-level evidence sit the nickel-cell standards. IEC 61951-2 defines the performance requirements for sealed nickel-metal-hydride cells, including the discharge, endurance and marking characteristics that establish a consistent cell baseline. IEC 62133-1 covers safety requirements for rechargeable sealed nickel-containing cells and packs, including electrical and mechanical abuse conditions; the numbering matters because IEC 62133-2 is the lithium part, so a nickel pack cites the -1 part. These are cell and pack standards, not radio or cryptographic approvals, and they do not replace the environmental or EMC tests; they provide the evidence that the cells themselves are controlled before they are built into the radio-specific assembly.
The transport rules are one of the practical advantages of nickel chemistry. Under surface regulations, nickel-metal-hydride batteries are identified with UN 3496. For air freight, the IATA guidance states that properly prepared NiMH batteries are considered not restricted when the shipper meets special provision A199, including the required text on the air waybill where one is used; the UN 3496 number itself is not used as part of the air waybill description. This differs from the lithium battery regime, which carries its own UN numbers and the UN 38.3 test summary, and it is particularly relevant where packs move through ordinary air cargo to training or garrison sites. The shipping documentation is prepared from the current IATA edition rather than an older rule, and the not-restricted status is not treated as permission to omit packaging or marking requirements.
Where the pack is used with a vehicle or aircraft, the power interfaces add their own evidence. MIL-STD-1275 defines the 28 V DC vehicle bus characteristics, including reverse polarity, spikes and surges, with test generators producing open-circuit spikes around 500 V; a battery eliminator or vehicle charger must withstand these before reaching the radio or the pack. MIL-STD-704 covers aircraft power characteristics for airborne installation. These are interface standards rather than battery standards, but they are part of the acceptance evidence for any mounted or airborne configuration, and a charger that has not been assessed against the relevant bus cannot be claimed as qualified for the platform.
The evidence is collected in a logical order rather than all at once. The cell baseline is established first through IEC 61951-2 and IEC 62133-1, the pack is then built to the radio geometry and subjected to the environmental and EMC program, and the complete radio proceeds to interoperability and cryptographic assessment. Each step produces a record: the test plan names the methods and severities, the laboratory reports the results, and the final acceptance file ties the certificates, the pack drawing and the transport documents together. A missing or out-of-edition reference is corrected before acceptance rather than explained away, and the revision dates of the standards are checked because documents such as MIL-STD-461 move through editions on a real schedule.
| Evidence layer | Standard / process |
|---|---|
| Environment | MIL-STD-810; STANAG 4370 / AECTP |
| Electromagnetic compatibility | MIL-STD-461H (current); MIL-STD-1275 / 704 interfaces |
| Interoperability | JITC and waveform conformance |
| Cryptography | NSA module certification, Type 1 / CCI controls |
| Cells and packs | IEC 61951-2; IEC 62133-1 |
| Transport | UN 3496; IATA special provision A199 |
The certification story is kept within what the evidence supports. A sealed NiMH pack for training, garrison and patrol radios is assessed against the cell standards, the environmental and EMC program and the transport rules that genuinely apply, and Weijiang does not claim that a nickel pack carries the frontline combat role designed around lithium packs. Where the radio itself requires Type-1 or interoperability certification, those remain the radio's system-level evidence, with the battery contributing its own layer rather than inheriting the radio's stamp. The result is a clean, traceable evidence file in which each certificate covers exactly what its standard says and no more.
No. It is a set of environmental engineering methods selected to match the platform's real service environment, from temperature and humidity to vibration, shock and explosive atmosphere. The test report names the methods and severities actually used, so two radios can both be qualified to MIL-STD-810 against different test profiles.
MIL-STD-461H was published in April 2026 and supersedes MIL-STD-461G from 2015. A current procurement names the required revision, and the test report is aligned to that edition rather than relying on an older certificate.
IEC 62133-1 is the safety standard for sealed nickel-containing cells and packs, while IEC 62133-2 is the lithium part. A nickel pack therefore cites the -1 part alongside the performance standard IEC 61951-2, and does not use lithium test numbers.
Yes, when prepared correctly. IATA special provision A199 treats compliant NiMH batteries as not restricted for air freight, with the required documentation and markings, and surface transport uses UN 3496. This is distinct from the lithium battery rules and is one of the logistics advantages of nickel chemistry.
No. The NSA certification covers the cryptographic modules, and the battery carries its own cell and pack evidence. The layers are independent: environmental, EMC, interoperability, cryptography and battery standards each govern their own scope, and the acceptance file assembles them rather than merging them into one stamp.
Environmental and EMC references include MIL-STD-810 and the MIL-STD-461 revision history, with MIL-STD-461H published in April 2026 and MIL-STD-461G from 2015, as described in test-laboratory and technical references. NATO references include STANAG 4370 and the AECTP series, including AECTP-230 and AECTP-200, as documented in standards catalogues and military professional material. Interoperability and cryptographic references include the JITC process, NSA Type-1 and Controlled Cryptographic Item practice and validated algorithm security policies. Cell and pack references include IEC 61951-2 and IEC 62133-1, and transport references include UN 3496 and the IATA guidance for special provision A199 revised for the current regulations. Platform interfaces reference MIL-STD-1275 and MIL-STD-704. No statistics have been invented, and each standard is described according to its actual scope.
Weijiang Power supplies sealed NiMH cells and assembled NiMH packs for training, garrison and patrol tactical radios and professional security packs, with the cell baseline established to IEC 61951-2 and IEC 62133-1 and the packs shipped under UN 3496 with the IATA A199 not-restricted air path. We support the environmental, EMC and interface evidence for the pack and provide the documentation procurement files require. Send us your radio model, the applicable standards and revisions, the platform interfaces and the transport route, and we will align the pack evidence and support your evaluation. See the Weijiang NiMH product range for standard pack formats, or contact our OEM team with the certification requirements.
