How Certified Battery Handling Protects Your Supply Chain

Every power tool, e-bike, and backup power station moving through e-commerce right now has a lithium-ion battery inside it, and the rules governing how that battery gets shipped are changing fast. The fulfillment operations that keep pace aren't just avoiding fines: they're protecting the environment, the communities near their warehouses, and the long-term value of the materials already invested in those batteries. G10 Fulfillment CEO and founder Mark Becker made that case in a recent piece for Supply & Demand Chain Executive, arguing that "what most of those supply chains aren't doing though is keeping pace with the regulations designed to move those batteries safely." Certified handling is what closes that gap.

The pattern is familiar to anyone who has watched a fast-growing product category outrun its oversight: demand shows up first, enforcement later. And in the interval between the two, a lot of companies decide that compliance is optional right up until it isn't.

The Numbers Behind the Warning

Start with the aviation data, because it's the clearest signal of how fast this is escalating. The FAA verified 89 lithium battery incidents involving smoke, fire, or extreme heat on US aircraft in 2024, a record at the time. In 2025, that number climbed to 93, roughly a 4.5 percent increase, with the large majority occurring on passenger flights rather than in cargo holds. Those aren't hypothetical risks dreamed up by bored regulators. They're batteries that were already on planes, already in transit, already one bad packing decision away from a diversion or an evacuation.

The financial exposure has moved just as fast. PHMSA's civil penalty ceiling sits at $102,348 per violation, rising to $238,809 when a violation results in death, serious injury, illness, or substantial property destruction. Those numbers were set at the end of 2024, and they're still in effect today (2026's usual inflation bump got cancelled), so they're not going anywhere soon. Multiply either figure across a distribution center shipping thousands of battery-powered SKUs a day, and the fines stop looking like a rounding error and start looking like a line item that could sink a quarter.

But the fines were never the real story. They're a proxy for a bigger failure: shipments that shouldn't have moved, moving anyway, because the people packing them didn't know what they were holding.

The Environmental Damage Nobody Bills For

Becker's article lays out the stakes plainly. "When lithium-ion batteries are either mislabeled, misclassified, or handled by undertrained workers, the consequences can have impacts beyond the warehouse floor," he writes. A thermal runaway event doesn't stay in the box where it started. As Becker describes it, "thermal runaway fires release toxic gases (including hydrogen fluoride, carbon monoxide, and volatile organic compounds) that linger in surrounding communities long after flames are extinguished," and a cargo fire at sea "can burn for days, contaminating surrounding water with heavy metals like cobalt or nickel, that leach from battery cells and accumulate in marine ecosystems."

A less visible version of this problem shows up in returns, and Becker calls it out specifically as "a quieter sustainability crisis embedded in everyday noncompliance." His diagnosis: "When batteries are misclassified and returned through standard reverse logistics channels, they frequently end up in general waste streams rather than regulated battery recycling programs." The consequence compounds from there, since, in his words, "a single improperly disposed lithium-ion battery can contaminate soil and groundwater at a disposal site for years," multiplied across the millions of e-commerce returns that move through 3PLs with no hazmat-specific reverse logistics protocol.

Becker also makes the upstream case, one that rarely enters the conversation: "Lithium mining is water-intensive in some of the world's most arid regions and cobalt sourcing carries well-documented environmental and human rights concerns." Every battery destroyed in a preventable fire or lost to inadequate packaging represents a cost that was already paid on the way into the supply chain and never recovered on the way out. As he puts it, "compliant handling is about protecting the full-lifecycle investment the supply chain has already made in these materials."

Designed for Everything Except This

Becker traces the operational failure back to a mismatch in design. "Most third-party logistics (3PL) providers built their operations around general freight, which are systems that work well for the vast majority of what moves through them," he writes. Lithium batteries don't fit that mold. Depending on watt-hour rating, state of charge, and how a battery is packed relative to the equipment it powers, a shipment can fall under a completely different set of DOT, OSHA, and PHMSA requirements than the box sitting next to it on the same pallet.

Kay Hillmann, G10's Director of Vendor Operations, has spent her career inside exactly this complexity. "In order to ship any hazardous material, you need to be certified in that classification of material," she said. "There's a book, it's almost four inches thick, of the rules and regulations that the DOT requires for you to label, ship, and store hazardous materials." That's not a document most warehouse floors have time to read, let alone internalize, which is why classification is where the most common failures start. Becker puts it bluntly: "teams that apply general product logic to battery shipments routinely assign the wrong UN number or skip hazard class markings entirely." Once that mismatch happens, it tends to cascade: carriers reject the shipment at tender, retailers hold the inbound freight, and returns processing stalls because nobody upstream flagged what was actually inside the box.

Packaging failures follow closely behind. As Becker writes, lithium batteries "require inner packaging that prevents short-circuit, outer packaging rated for the hazard class, and in many cases state-of-charge limits before the box can be closed." Companies that repack or rebrand products somewhere in the middle of the supply chain are especially prone to losing track of those requirements; the product looks identical, but the label no longer matches what's inside.

Training closes the loop, or fails to. "Hazmat employees under federal regulations must receive function-specific training and recertification every three years," Becker notes, and that standard is hard to hold steady in warehouses with real turnover, particularly during peak season when temporary labor floods in for eight weeks and leaves. Helen Cattaneo, G10's Director of Business Optimization, described how far the verification process has moved beyond a simple checked box. "You have to submit your paperwork to an approved third party; they will look it over and say you have the green flag," she said. "It's no longer just 'give me your test report,' which could have been written in crayon by anyone." When the last set of hands touching a battery shipment doesn't understand thermal runaway, the compliance system has already failed before the truck leaves the dock.

What Certified Handling Looks Like

The 300 watt-hour threshold is the dividing line that separates a battery most 3PLs will still touch from one that almost none of them will. John Pistone, G10's Chief Revenue Officer, lays out what crossing that line requires. "If you have a lithium ion battery that's greater than 300 watt hours, it's considered fully regulated," he said. "That means there's special packaging that it has to have. Everybody who touches it has to be certified. You have specific requirements in your warehouses, like the type of sprinkler systems. Your insurance is more expensive. Shippers charge you extra to do it." Fully regulated batteries aren't a side business for the fulfillment centers that handle them; they're a facility-level commitment involving certified staff, specialized fire suppression, and carrier relationships that go well beyond a standard rate negotiation.

That's precisely why the biggest marketplaces tend to keep this category at arm's length inside their own networks, relying instead on a small number of certified partners to handle the storage and shipping directly. G10's Director of Sales, Matt Bradbury, sees how few competitors are even willing to enter that zone. "Even our competition, they don't want to touch things that are over 40 or 45 watt hour batteries," he said, pointing to a gap that runs from roughly 40 watt-hours up through the fully regulated 300 watt-hour threshold, a range that includes everything from electric scooters to massage guns that most 3PLs simply decline to handle.

None of that is possible without the paperwork discipline underneath it. Cattaneo emphasized how granular the documentation requirements get, right down to which section of a Safety Data Sheet actually matters for a shipper. "Specifically for SDS, there are different sections on that report," she said. "Section 14 is transportation, and that's what is most applicable to us because we're handling the transport. I always make sure that the appropriate UN number is on that report and it matches to the product." That kind of line-item verification, repeated across thousands of SKUs, is what separates a facility that can legally accept fully regulated batteries from one that's simply hoping nothing goes wrong.

The Sustainability Case

For years, oversight in this space lagged behind the market it was supposed to govern. Becker frames the shift as a matter of overdue reckoning rather than gradual drift: PHMSA has steadily escalated enforcement and finalized a comprehensive Lithium Battery Guide for Shippers, the CPSC has issued warnings about non-compliant battery products sold through major online marketplaces, and Congress has passed legislation directing mandatory safety standards for rechargeable batteries in micromobility devices, with proposed bills that would extend platform accountability to e-commerce sellers shipping hazmat products directly. Becker draws a direct line to an earlier reckoning in a different industry, one worth quoting in full: "This trajectory mirrors what happened in food safety over the past decade. When FSMA pushed companies that had treated food safety as a documentation exercise, they scrambled." Battery compliance is following the same arc, on a faster timeline. As he puts it, "the enforcement is arriving whether or not supply chains are ready for it."

Becker also points to a second layer stacking on top of the safety one. The EU's Battery Regulation, in his words, "is already reshaping how battery products are designed and documented" and is "beginning to influence what US importers and distributors are expected to track and report." Carbon disclosure frameworks increasingly require companies to account for emissions tied to hazardous material incidents, not just routine operations, and ESG reporting standards are expanding to cover supply chain environmental risk more broadly. Becker's read on where that leaves a mishandled shipment: it's "exactly the kind of event that ends up in a materiality assessment."

That puts brand owners in an uncomfortable spot, and Becker names it directly: "Retailers and brand owners who have made public commitments to responsible sourcing and reduced environmental footprint increasingly need to apply that standard to how their products move, not just how they're made." A company can source ethically and manufacture responsibly, and still carry meaningful environmental liability if the 3PL moving its product isn't built for battery compliance. Becker's framing of the underlying trade-off is the one worth sitting with: cheap fulfillment and safe battery shipping are, in practice, incompatible, because compliant hazmat operations require training infrastructure that has to be maintained and documented across a workforce with real turnover, live classification data tied to every SKU rather than a set of general product attributes copied from a catalog, and carrier relationships built specifically around hazmat acceptance rather than around rate negotiations.

Becker closes his own piece on the point that matters most here: "Every battery that leaves a dock is a decision." He also frames the questions a shipper should actually be asking a fulfillment partner: not just "do you handle hazmat," but "what does your hazmat employee training program look like, and how do you document it?" Not just "can you ship lithium batteries," but "how do you handle classification exceptions when a product's watt-hour rating changes between SKUs?" Those answers, as he notes, reveal more about a company's real capability than any rate card ever will.

FAQ

What watt-hour threshold makes a lithium battery "fully regulated"? Batteries exceeding 300 watt-hours are generally classified as fully regulated hazardous materials, which triggers requirements for specialized packaging, certified handling at every touchpoint, and warehouse-level infrastructure like upgraded sprinkler systems.

Why do major marketplaces avoid storing lithium batteries in their own warehouses? Fully regulated hazardous materials require specialized certification, insurance, and facility upgrades that most general-purpose warehouses aren't built for, which is why many marketplaces rely on certified partners to handle storage and shipping for these products directly.

What happens environmentally when a battery shipment catches fire? A thermal runaway fire releases toxic gases, including hydrogen fluoride and carbon monoxide, into the surrounding air, and a cargo fire at sea can leach heavy metals like cobalt and nickel into nearby water for as long as it burns.

Are returned batteries a compliance risk too? Yes. Misclassified batteries returned through standard reverse logistics channels frequently end up in general waste streams instead of certified recycling programs, and a single improperly disposed battery can contaminate soil and groundwater at a disposal site for years.

How often do hazmat employees need to be retrained? Federal regulations require function-specific training and recertification on a fixed schedule, which is difficult for many operations to maintain consistently given normal warehouse turnover and the added strain of temporary peak-season labor.

Is battery compliance really an ESG issue, or just a safety one? Both. ESG reporting standards increasingly cover supply chain environmental risk, and a preventable cargo fire or improperly disposed battery is exactly the kind of event that can surface in a materiality assessment, regardless of how a company sources or manufactures its product.

What should a brand ask a 3PL before shipping battery products through them? Ask what their hazmat employee training program looks like and how it's documented, how they handle classification exceptions when a product's watt-hour rating changes, and whether their facilities and insurance are actually built for the watt-hour range the product falls into, not just whether they'll technically accept the shipment.