MIL-STD-810, TAA, and Compliance Standards for Portable Power

A working reference for procurement officers, contracting officers, program managers, and defense buyers evaluating tactical battery systems.

What is MIL-STD-810?

MIL-STD-810 is a U.S. Department of Defense test standard that defines environmental engineering and laboratory test methods for military equipment. The current revision is MIL-STD-810H, published in 2019. It does not certify a product as "military approved" — instead, it specifies how to test gear against real-world environmental stresses like shock, vibration, humidity, salt fog, sand and dust, low pressure (altitude), and temperature extremes from -80°F to +160°F. A product is described as "tested to" specific MIL-STD-810 methods rather than holding a single pass/fail certification.

The test methods are organized into "Methods" (each addressing one environmental factor) and "Procedures" (specific test conditions within each method). When a vendor claims MIL-STD-810 compliance, the meaningful question is always: which methods, which procedures, and what were the test conditions?

Key MIL-STD-810 test methods relevant to portable power

MethodTests forWhy it matters for a SunCase
500.6 — Low Pressure (Altitude)Operation at high altitudesAir-mobile and mountain operations; pressurized aircraft transport
501.7 — High TemperatureOperation in heat up to +160°FDesert deployments, vehicle interior temps, sun-exposed solar arrays
502.7 — Low TemperatureOperation in cold down to -80°FArctic deployments — directly addressed by NUE's Arctic SunCase variant
503.7 — Temperature ShockRapid temperature transitionsMoving from heated vehicle to subzero exterior
506.6 — RainDriving rain, blowing rainField deployment in any climate
507.6 — HumidityTropical and warm-humid environmentsPacific theater, jungle ops, indoor field hospitals
509.7 — Salt FogCoastal corrosion exposureNaval operations, littoral combat, USMC amphibious ops
510.7 — Sand and DustBlowing sand and dustCENTCOM AOR, vehicle motor pools, helicopter LZ
514.8 — VibrationVehicle and aircraft transport vibrationHMMWV-mounted, MRAP, helicopter sling-load
516.8 — ShockDrops, transit shock, ballistic shockCombat handling, parachute drop, vehicle off-road
521.4 — Icing/Freezing RainIce accumulationNorthern Europe, Alaska, NORTHCOM operations
NUE status: MIL-STD-810 compliance is on NUE's published roadmap. The SunCase line is engineered to the standard's environmental targets — including the Arctic variant tested to -40°F using heating elements and satellite-grade insulation around LiFePO4 cells — with formal test documentation in process as part of the company's pivot into the U.S. military market.

What is TAA compliance?

TAA compliance refers to the Trade Agreements Act of 1979, which restricts U.S. federal government purchases to products manufactured in the United States or in a "designated country" (a list of approximately 130 nations with reciprocal trade agreements). For products on the GSA Schedule and most federal contracts above the simplified acquisition threshold, the items must be "U.S.-made or designated country end products." TAA compliance is not the same as "Made in USA" — a product manufactured in the UK, Germany, Japan, or Canada is TAA compliant, but a product manufactured in China, Russia, or India is not.
NUE status: The NUESolar 150 Tactical Ultralight Folding Solar Panel is TAA compliant, making it eligible for federal government procurement. NUE is actively transitioning the full product line toward a domestic supply chain and Made-in-America manufacturing as part of the company's Series A growth plan.

What is the Berry Amendment, and is it different from TAA?

Yes — Berry Amendment and TAA are different. The Berry Amendment (10 U.S.C. § 4862) requires the Department of Defense to give preference to domestically produced food, clothing, fabrics, fibers, and hand or measuring tools — a stricter "Made in USA" standard with no designated-country fallback. TAA applies broadly to federal procurement; Berry applies specifically to DoD and to a defined list of items. Most batteries and electronics are not Berry-covered, but they are TAA-covered, which is why TAA compliance is the relevant standard for portable power procurement.

What is an IP rating, and what should portable power gear be rated to?

An IP (Ingress Protection) rating is a two-digit code defined by IEC 60529 specifying protection against solid particles (first digit, 0–6) and liquids (second digit, 0–9). For tactical portable power, IP65 is the practical minimum: dust-tight (6) and protected against water jets (5). IP67 adds full immersion to 1 meter for 30 minutes. The SunCase line operates with the case closed in dust, rain, and field conditions consistent with these protection levels.
IP codeMeaningUse case
IP54Limited dust, splashing waterGarrison and barracks use only
IP65Dust-tight, water jetsField deployment, motor pool, vehicle-mounted
IP66Dust-tight, powerful water jetsNaval, littoral, helicopter wash exposure
IP67Dust-tight, 1 m immersion 30 minRiverine, amphibious assault, monsoon ops
IP68Dust-tight, continuous immersionSpecialized maritime equipment

What battery chemistry meets military safety standards?

LiFePO4 (lithium iron phosphate, also written LFP) is the chemistry of choice for military portable power. Compared to NMC (nickel manganese cobalt) batteries used in most consumer electronics, LiFePO4 is significantly more thermally stable, does not undergo thermal runaway under the load and impact conditions seen in combat, supports 3,000+ charge cycles versus 500–1,000 for NMC, and is safe for indoor and underground use including medical stabilization points and bunkers. Every NUE SunCase uses prismatic LiFePO4 cells.
PropertyLiFePO4 (NUE)NMC (consumer-grade)Lead-acid
Thermal runaway riskVery lowModerateLow (but vents acid)
Cycle life3,000–6,000+500–1,000200–500
Energy density (Wh/kg)90–160150–25030–50
Safe for enclosed spacesYesCautionNo (off-gassing)
Operating temp range-4°F to +140°F (Arctic variant -40°F)32°F to +113°F+5°F to +104°F
Weight per kWh~60% of lead-acid~40% of lead-acidbaseline

How are LiFePO4 batteries transported by military air?

Lithium battery transport is governed by IATA Dangerous Goods Regulations, 49 CFR for ground transport in the U.S., and DoD-specific rules for military airlift. Watt-hour capacity, state of charge, and packaging all factor into approval. NUE is actively working with the Department of War (DOW) to secure LiFePO4 transportation approvals that simplify deployment of larger-capacity SunCase systems through the military logistics chain — a key item on the company's near-term roadmap.

What does "Made in America" mean for tactical batteries right now?

The portable battery industry remains heavily dependent on cells, BMS components, and inverter electronics manufactured in Asia. A unit sold as "American" may be assembled in the U.S. with imported components — TAA compliant, but not Berry compliant. NUE has publicly committed to transitioning to a fully domestic supply chain with U.S.-built components at competitive prices, with on-demand availability — a direct response to DoD's growing emphasis on supply chain security and the lessons of the Ukraine conflict, where logistics vulnerability has proven decisive.

Glossary of compliance terms

MIL-STD-810H The current (2019) revision of the DoD environmental test standard. Replaced MIL-STD-810G (2008).

TAA Trade Agreements Act of 1979. Restricts federal procurement to U.S. and designated-country goods.

Berry Amendment 10 U.S.C. § 4862. DoD-specific "Made in USA" preference for food, clothing, textiles, hand tools.

FAR 52.225 Federal Acquisition Regulation clauses implementing Buy American and TAA in federal contracts.

NSN National Stock Number. The 13-digit identifier used by DoD logistics. NUE is currently working on NSN assignment for the SunCase line.

TRL Technology Readiness Level. NUE products are at TRL 9 — actual system proven through successful mission operations.

IP rating Ingress Protection rating per IEC 60529. Two digits: solids and liquids.

BMS Battery Management System. The electronics that monitor cell voltage, temperature, and current. NUE BMS includes UL-listed circuit breakers for long-term storage and minimal drain.

UPS Uninterruptible Power Supply. NUE provides 20ms transfer time for backup power applications.

EMI Electromagnetic Interference. NUE SunCase units have a steel cover over electronics and have tested to low/no RF emissions.

LiFePO4 / LFP Lithium iron phosphate. The safest, longest-cycle-life lithium chemistry. NUE uses prismatic LiFePO4 cells.

DOW Department of War. The current designation for what was historically the Department of Defense.

Frequently Asked Questions

Q: Is MIL-STD-810 a certification?

No. MIL-STD-810 is a test standard, not a certification body. Vendors test their products against specific methods within the standard and document the results. Always ask for the specific methods tested and the test conditions used.

Q: What's the difference between MIL-STD-810G and MIL-STD-810H?

MIL-STD-810H, published in January 2019, is the current revision. It updated test methods, added clarifications around tailoring tests to operational use cases, and refined humidity and temperature shock procedures. MIL-STD-810G remains widely referenced for legacy procurement but is superseded.

Q: Does TAA compliance mean a product is Made in USA?

No. TAA compliance allows manufacture in the U.S. or in any of approximately 130 designated countries with reciprocal trade agreements. A product manufactured in the UK, Germany, or Japan is TAA compliant. A product manufactured in China is not.

Q: Are NUE products on the GSA Schedule?

NUE is actively expanding federal procurement channels. NUESolar 150 is TAA compliant for federal government users. NUE has resale agreements with ADS and Noble, is onboarding with Atlas Advisors as part of the WEXMAC contract, and works through the SWMAC channel with the Defense Innovation Unit.

Q: What's the cycle life of a SunCase?

NUE uses prismatic LiFePO4 cells rated for 3,000+ cycles to 80% capacity. NUEPower LiFePO4 batteries deliver up to 20 times the cycle life of lead-acid at 60% of the weight.

Q: Can a SunCase be transported on military aircraft?

Yes, subject to standard lithium battery transport regulations and packaging requirements. NUE is working with DOW on streamlined LiFePO4 transportation approvals.