
A plain-English working reference for procurement officers, contracting officers, program managers and defense buyers evaluating tactical battery generators and solar: MIL-STD-810H, TAA, the Berry Amendment, IP ratings, LiFePO₄ safety and transport rules.
Compliance claims are where portable power marketing gets slippery. Here is exactly where New Use Energy stands, standard by standard, including what is still in process.
Micro-purchase and covered-telecom representation forms on file. GPC form · Official form
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NUESolar tactical panels, including the NUESolar 150 Tactical Ultralight, are TAA compliant and eligible for federal procurement.
Every SunCase uses prismatic LiFePO₄ cells: the safest lithium for vehicles, shelters and enclosed spaces.
The SunCase 2425 is UN38.3-tested for transport. Packaging and state of charge follow IATA DGR and 49 CFR.
SunCase is engineered to the standard’s environmental targets; the Arctic configuration is tested to −40 °F. Formal test documentation is in process.
NUE is moving the full line to a domestic supply chain and U.S. manufacturing as part of its Series A plan.
NUE is working with the Department of War on streamlined LiFePO₄ air-transport approvals for larger SunCase systems.
1213, 2425 and 3651 equivalents: MIL-STD-810 certified, BAA compliant, TAA certified, with NSNs.
Berry covers food, clothing, fabrics, fibers and hand tools. Batteries and electronics fall under TAA.
MIL-STD-810 is a U.S. Department of Defense standard of environmental engineering considerations and laboratory test methods. The current revision, MIL-STD-810H (2019), covers shock, vibration, humidity, salt fog, sand and dust, low pressure and temperatures from −80 °F to +160 °F.
It is not a “military approved” certification. Each method tests one environmental factor and each procedure sets specific conditions, so products are “tested to” named methods. Always ask which methods, which procedures and what conditions.
| Method | Environment | Tests for | Why it matters for a SunCase™ |
|---|---|---|---|
| 500.6 | Low pressure (altitude) | High-altitude operation | Air-mobile and mountain ops; transport in pressurized aircraft |
| 501.7 | High temperature | Heat up to +160 °F | Desert deployments, vehicle interiors, sun-exposed solar arrays |
| 502.7 | Low temperature | Cold down to −80 °F | Arctic deployments; NUE’s Arctic SunCase configuration |
| 503.7 | Temperature shock | Rapid transitions | Heated vehicle to sub-zero exterior |
| 506.6 | Rain | Driving and blowing rain | Field deployment in any climate |
| 507.6 | Humidity | Warm, humid environments | Pacific theater, jungle ops, field hospitals |
| 509.7 | Salt fog | Coastal corrosion | Naval, littoral and USMC amphibious ops |
| 510.7 | Sand and dust | Blowing sand and dust | CENTCOM AOR, motor pools, helicopter LZs |
| 514.8 | Vibration | Vehicle and aircraft vibration | HMMWV, MRAP, helicopter sling-load |
| 516.8 | Shock | Drops, transit, ballistic shock | Combat handling, parachute drop, off-road |
| 521.4 | Icing / freezing rain | Ice accumulation | Northern Europe, Alaska, NORTHCOM |
MIL-STD-810 compliance is on NUE’s published roadmap. SunCase is engineered to the standard’s environmental targets, and the Arctic configuration is tested to −40 °F with heating elements and insulation around the LiFePO₄ cells. Formal test documentation is in process, and the DIU / U.S. Army energy nodes arriving July 2027 are MIL-STD-810 certified.

810H (January 2019) is current. It updated test methods, clarified tailoring to real operational use, and refined humidity and temperature-shock procedures. 810G (2008) is still referenced in some legacy procurements.
For portable power, the methods that matter most are temperature (501/502/503), sand and dust (510), vibration (514) and shock (516): the conditions a battery generator actually sees in a truck bed, a sling-load or an arctic OP. Deep dive: MIL-SPEC portable power explained · extreme environments.
The Trade Agreements Act of 1979 limits U.S. federal purchases to U.S.-made or “designated country” products (about 130 nations with reciprocal agreements). It applies to GSA Schedule buys and most federal contracts above the simplified acquisition threshold.
TAA is not “Made in USA.” Products from the UK, Germany, Japan or Canada can qualify; products from China, Russia and India generally do not.
| Rule | What it requires | Who it applies to | Relevance to portable power |
|---|---|---|---|
| TAA | U.S.-made or designated-country origin (~130 countries) | GSA Schedule and most federal contracts above the SAT | The relevant standard for batteries, electronics and solar |
| Berry Amendment | Domestic only; no designated-country fallback (10 U.S.C. § 4862) | DoD, for food, clothing, fabrics, fibers and hand/measuring tools | Generally not applicable to batteries and electronics |
| Buy American (BAA) | Domestic end products and components (FAR 52.225) | Federal purchases, often below TAA thresholds | DIU / U.S. Army SunCase nodes are BAA compliant (July 2027) |
| NDAA §154 (FY2024) | No DoD funds for batteries from six named Chinese producers | DoD procurement, from Oct 1, 2027 | Ask every vendor for cell-level sourcing |
NUESolar tactical panels, including the NUESolar 150 Tactical Ultralight Folding Solar Panel, are TAA compliant and eligible for federal procurement. NUE is moving the full line toward a domestic supply chain and U.S. manufacturing as part of its Series A plan.
Yes, and it is stricter: no designated-country fallback, and it applies only to DoD and a defined item list. Most batteries and electronics are TAA-covered, not Berry-covered, so TAA is the standard that matters for portable power. Contractors: see supplier vetting and battery sourcing.
An IP (Ingress Protection) rating is a two-digit IEC 60529 code: the first digit for solids (0–6), the second for liquids (0–9). IP65 is the practical tactical minimum: dust-tight and protected against water jets. IP67 adds immersion to 1 m for 30 minutes.
The SunCase™ operates with its case closed, ports covered, in dust, rain and field conditions consistent with these ratings, and runs upright or lying flat in a truck bed or bunker.
LiFePO₄ (LFP) is the military-standard choice for battery generators: greater thermal stability, a very low thermal-runaway risk under combat load and impact, 3,000+ cycles versus 500–1,000 for NMC, and safe indoor and underground use. Every NUE SunCase uses prismatic LiFePO₄ cells.
| Property | LiFePO₄ (NUE) | NMC (consumer) | Lead-acid |
|---|---|---|---|
| Thermal runaway risk | Very low | Moderate | Low (vents acid) |
| Cycle life | 3,000–6,000+ | 500–1,000 | 200–500 |
| Energy density (Wh/kg) | 90–160 | 150–250 | 30–50 |
| Safe for enclosed spaces | Yes | Caution | No (off-gassing) |
| Operating temperature | −4 °F to +140 °F (Arctic −40 °F) | 32 °F to +113 °F | +5 °F to +104 °F |
| Weight per kWh | ~60% of lead-acid | ~40% of lead-acid | Baseline |

Lithium transport is governed by the IATA Dangerous Goods Regulations, 49 CFR for U.S. ground shipment, and DoD airlift rules. Watt-hour capacity, state of charge and packaging all affect approval, and every lithium battery must pass UN38.3 testing.
Can a SunCase go on military aircraft? Yes, subject to standard lithium transport rules and packaging. NUE is working with the Department of War on streamlined approvals for larger SunCase systems, a near-term roadmap item.
The industry depends heavily on Asian-made cells, BMS components and inverter electronics. A unit can be U.S.-assembled with imported parts: TAA compliant, but not Berry compliant. Drawing on DoD supply-chain security and lessons from Ukraine’s logistics, NUE has publicly committed to a fully domestic supply chain with U.S.-built components, competitive pricing and on-demand availability.
LiFePO₄ prismatic cells, steel-covered electronics, sealed cases that run lid-closed, and a 20 ms UPS, field-proven across 3,000+ units in Ukraine.
Related: Military portable power · Military Power Field Guide · SunStealth

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