Amazon FBA Prep for Products with Lithium Batteries: Classification, Documentation, and the 2026 State of Charge Rule

Most sellers look at the FBA Dangerous Goods program and think they have battery compliance handled. They do not. Battery products carry a classification system that runs parallel to the standard hazmat program, a specific set of documents that must match your exact product, and a new 2026 rule tied to how charged a battery is when it enters Amazon's network. With Amazon shutting down its own prep and labeling services in January 2026, every step of that compliance workflow - from verifying charge levels to applying hazard marks to organizing the documentation packet - now belongs to the seller or their prep center. Getting it wrong means held inventory, stripped Prime eligibility, or a listing quietly removed.

Which Products Trigger Battery Compliance

The category is much wider than most sellers expect. The obvious cases - power banks, replacement laptop batteries - are easy to spot. The non-obvious ones cause the real problems.

Any product that ships with a lithium-ion or lithium-metal battery as part of the package triggers Amazon's battery compliance requirements. That includes batteries that are installed, loose in the box, or sold as standalone units. The product categories that most frequently catch sellers off guard include:

• Toys and children's electronics - RC cars, interactive figures, handheld games, ride-on vehicles with rechargeable packs
• Bluetooth speakers, headphones, and wireless audio accessories with built-in cells
• Power tools and cordless drills sold as kit bundles with battery packs included
• Cameras and action cameras sold with a spare battery loose in the box
• Drones and remote-controlled aircraft with lithium-polymer flight batteries
• Fitness trackers, smartwatches, and medical monitoring wearables
• LED beauty devices, cosmetic tools, and personal care items with integrated rechargeable cells
• Emergency lighting, portable solar chargers, and camping gear with battery backup

The common thread is any product where a rechargeable cell provides the power source. If the battery is sealed inside the housing or placed loose in the retail box, Amazon treats the entire unit as a battery product. Sellers who list in these categories and check "no battery" on the ASIN setup are creating a documentation gap that Amazon's hazmat review will surface.

The Four UN Numbers: Classifying Your Battery Configuration Before It Ships

Lithium batteries fall into four UN classifications based on chemistry and whether the battery ships alone or alongside a device. Getting the right classification is not optional - it determines which packing instructions apply, which aircraft class can carry the shipment, and what documentation is required.

UN Number	Battery Type	Configuration	Air Eligibility
UN3480	Lithium-ion	Standalone battery (power banks, spare laptop batteries sold alone)	Cargo aircraft only - prohibited on passenger aircraft
UN3481	Lithium-ion	Packed with or contained in equipment (cameras, toys, speakers)	Passenger and cargo aircraft, subject to watt-hour limits
UN3090	Lithium-metal	Standalone battery (coin cells in bulk, primary camera batteries sold alone)	Cargo aircraft only above certain quantity thresholds
UN3091	Lithium-metal	Packed with or contained in equipment (remote controls, hearing aids, watches)	Passenger and cargo aircraft, subject to quantity limits

Most consumer electronics and toy sellers operate in UN3481 territory - a lithium-ion battery either installed in the device or boxed alongside it. Power bank sellers who ship cells without an attached device are in UN3480 territory, which is more restrictive for air routing. Sellers of products using coin cells or primary lithium batteries fall under UN3091. The classification you select on the ASIN detail page must match the physical configuration of what you actually ship.

Watt-Hour Thresholds and FBA Access Tiers

Watt-hour rating is the measure of stored energy used to determine both handling class and FBA network access. The figure appears on the battery label or product spec sheet. When it is not stated directly, calculate it by multiplying the battery's nominal voltage by its amp-hour capacity - a 3.7-volt cell rated at 2,000 milliamp-hours works out to 7.4 watt-hours. That calculated figure is the input to every compliance decision in this section.

At the individual cell level, IATA sets a threshold dividing Section II from Section I classification. Cells below that threshold qualify for Section II - the simplified handling class, which carries reduced documentation requirements and higher per-package quantity allowances. Cells above it require Section I handling: the full Class 9 hazardous materials diamond on the outer carton, tighter per-package quantity limits, and the more restrictive IATA packing instruction. Most consumer rechargeable cells fall into Section II. High-capacity batteries in power tools, large drones, and industrial power equipment frequently cross into Section I. The cell watt-hour rating - not the full pack or device rating - determines which class applies at the unit level.

At the battery pack level, FBA uses a three-tier structure. Packs below a standard ceiling enter under ordinary FBA battery requirements, the path taken by most consumer electronics and toy sellers. Packs above that ceiling but below a higher limit require enrollment in the FBA Dangerous Goods program before inventory can ship. Enrollment is an application process - not an automatic grant - and must be approved before the inbound shipment plan is created, not after the fact. Packs above the upper limit cannot enter FBA at any enrollment tier and require a fulfillment method entirely outside the FBA network.

A fourth threshold, set below the standard FBA ceiling, determines which "packed with" batteries fall under the 2026 state of charge rule. Batteries in that configuration above this lower floor must arrive at or below the maximum charge level described in the next section. Batteries below the floor are exempt from the SOC requirement even if they otherwise qualify for standard FBA. The current values for all four thresholds are published in Amazon's FBA battery requirements documentation in Seller Central and are updated when IATA issues its annual DGR revision. Check them before each new inbound cycle - the figures in effect when you create the shipment plan govern eligibility, not whatever figures were current when you last reviewed the policy.

Packed With vs. Contained In: Why the Distinction Drives the Prep Workflow

This is the distinction most prep guides skip, and it is the one that creates the most errors at the bench. The difference between "packed with equipment" and "contained in equipment" determines which IATA packing instruction applies - PI966 or PI967 - and the two have different requirements for how units are prepared before shipping to Amazon.

Contained in equipment (PI967) means the battery is installed inside the device and not removable without tools or significant disassembly. A Bluetooth speaker with a sealed internal battery is "contained in." A camera with a battery compartment that accepts the battery in the factory configuration is "contained in" when the battery is seated and the device is assembled.

Packed with equipment (PI966) means a battery ships in the same outer package as the device but is not installed in it. A camera sold with a spare battery loose in the box is "packed with." A power tool kit that includes an extra battery pack in a separate slot inside the retail package is "packed with."

At the prep bench, that distinction changes what gets verified. A "contained in" unit requires checking that the device is not actively charging, that the battery is properly seated, and that the outer packaging shows the required battery mark. A "packed with" unit requires all of that plus confirming that the loose battery has protected terminals and that the full package meets the stricter state of charge requirement.

The 2026 State of Charge Rule: Air Eligibility, Ground-Only Consequences, and How Compliance Is Declared

Effective January 1, 2026, lithium-ion batteries in a "packed with" configuration above a defined watt-hour floor must ship to Amazon at or below a maximum state of charge. The rule originates from ICAO air transport safety standards - it is not Amazon policy that Amazon invented independently. Amazon enforces it because inbound shipments that meet the charge limit are the ones Amazon can legally route by air. Check Seller Central and the current IATA Dangerous Goods Regulations for the applicable maximum figure, since IATA updates its DGR annually.

Inventory physically received at an Amazon fulfillment center before January 1, 2026 was grandfathered under prior rules. The state of charge requirement applies at the time of inbound shipment creation - not to existing stock already in the network.Amazon FBA Dangerous Goods program documentation

The consequence of non-compliance is not a suspension and does not trigger an account health strike. It is silent. ASINs without SOC compliance information on file in Seller Central are automatically downgraded to ground-only fulfillment. Ground routing adds multiple business days to delivery compared to air. Products that lose air eligibility lose the delivery speed required to earn Prime-speed badges and compete in the Buy Box on fast-moving listings. There is no alert - the delivery promise degrades and conversion drops with it, and the connection to SOC non-compliance is not visible without digging into ASIN-level routing data.

For "contained in equipment" configurations the SOC requirement carries strong IATA guidance but the universal mandate applies primarily to the "packed with" case. When a device with an installed battery and a spare loose battery share the same outer box, the mixed-package rule applies and the stricter "packed with" requirement governs the entire shipment.

SOC compliance must be declared in Seller Central as part of the battery information on file for the ASIN. At the prep center level, SOC verification means receiving units from the supplier with a confirmed charge level, testing a sample if the supplier-declared figure is questionable, and documenting the finding before the inbound shipment plan is created.

The Documentation Stack: What Each Document Must Say and Where It Is Submitted

Amazon's hazmat review requires a specific set of documents for lithium battery products. Each document has matching requirements - the product name, brand, and model on one must match the others exactly. Minor variations are grounds for rejection, not a request for clarification.

1. Complete the battery section of the ASIN detail page in Seller Central. Select the correct UN number, battery type, watt-hour rating, and configuration - installed, packed with, or sold separately. The documents you upload must match what you declare here.
2. Obtain a UN 38.3 test summary for the exact battery model you are shipping. The summary must name the battery model number precisely. Amazon rejects a test summary written for a similar battery from the same factory if the model number differs even slightly. If your supplier changes battery models between production runs, you need a new summary before the next shipment.
3. Prepare a Safety Data Sheet that covers all required GHS sections. The product name and brand on the SDS must match the listing precisely. A mismatch between the brand name on the SDS and the brand on the ASIN detail page is a rejection trigger regardless of how minor the variation appears.
4. Upload both documents to Seller Central via the Manage Dangerous Goods Classification tool. Do not create an inbound shipment plan before hazmat review is complete. Attempting to ship before approval results in inventory held or turned away at the fulfillment center.
5. Wait for hazmat review to clear before creating the inbound shipment plan. Review takes multiple business days after the correct documents are submitted - check Seller Central for the current window. If Amazon requests additional information, a delayed response restarts the review clock.

Some products qualify for an exemption sheet in place of a full SDS - typically those with very small cells that fall below a defined capacity threshold. Confirm eligibility in Seller Central's exemption sheet tool before relying on that route.

Physical Prep Requirements: Labels, Packaging, and Marking

Unit-level marking

Every unit with a lithium battery requires the red lithium battery mark on the outer packaging. This is a diamond-shaped caution label displaying a battery symbol and the words "LITHIUM BATTERY." It is required on every outer package regardless of whether the shipment qualifies as Section I or Section II - the simplified handling class does not eliminate the mark requirement. The label must be clearly visible and not obscured by poly bag sealing, shipment labels, or bundling tape applied at the prep center.

Terminal protection for loose batteries

Loose batteries - any battery not permanently installed in a device - must have contacts protected so they cannot short against metal inside the package:

• Each loose battery individually wrapped in non-conductive material or placed in a separate plastic sleeve
• Loose batteries stored in the original retail tray or blister when one is present - retail packaging designed for terminal protection satisfies the requirement
• Loose batteries not bundled together or placed in the same compartment as metal parts, screws, or tools
• Batteries with exposed terminals placed in individual resealable poly bags before going into the master pack

Master carton marking

The outer shipping carton must display the correct UN number and the Class 9 hazardous materials diamond if the shipment qualifies as Section I. Section II shipments still require the lithium battery mark on the carton. Labels applied over corrugate damage or printed on thin stock that peels in humidity are a common rejection point at the fulfillment center - carton markings must survive transit and be legible at receiving.

What Happens When Non-Compliant Battery Inventory Reaches Amazon

Non-compliant battery inventory does not pass quietly through receiving. The scenarios that follow from sending non-compliant product break into four categories:

• Inventory hold: Units check in but are quarantined pending review. They generate stranded inventory fees and are unavailable for sale during the hold period, which can run for weeks while Amazon works through the documentation issue.
• Refusal at the dock: For Section I shipments arriving without the required Class 9 label or without matching documentation, the fulfillment center may refuse delivery. The shipment returns to the carrier at the seller's cost.
• Disposal: If Amazon cannot resolve the documentation issue and the product is classified as non-compliant hazardous material with no valid disposal instruction on file, Amazon may dispose of the inventory at the seller's expense. Recovery at that point is not an option.
• Listing removal: Beginning June 2026, Amazon significantly escalated enforcement against non-compliant lithium battery listings. Sellers described the wave of removals as the "Amazon Lithium Battery Sales Ban." It was not a category ban - it was a compliance enforcement sweep that removed ASINs where documentation did not meet current standards at scale, without the gradual warning system applied to standard performance violations.

The June 2026 enforcement wave was the direct result of years of documentation gaps accumulating in the network. Sellers who had shipped battery products without proper SDS or UN 38.3 test summaries under prior lax enforcement found listings removed without warning. The January 2026 closure of Amazon's own prep and labeling services removed the last buffer that had caught some of these gaps at the fulfillment center level. Amazon staff no longer apply battery marks, check charge levels, or assemble documentation packets at receiving. Every compliance step now belongs to whoever packed and shipped the product before it arrived.

Frequently Asked Questions

My supplier's spec sheet shows voltage and milliamp-hours but no watt-hour figure. How do I calculate it?

Multiply the nominal voltage by the amp-hour capacity. Convert milliamp-hours to amp-hours by dividing by 1,000 - a cell listed at 3.7 volts and 2,000 milliamp-hours has a watt-hour rating of 7.4. That figure is what you enter on the ASIN detail page and compare against the current FBA access thresholds in Seller Central. If your supplier provides conflicting voltage or capacity figures across different documents for the same battery, request a single authoritative battery specification sheet from the factory before proceeding - a mismatch between your ASIN declaration and the UN 38.3 test summary is a rejection trigger even if the underlying math is close.

I had hazmat review approved for an ASIN last year. Do I need to resubmit anything for a new inbound shipment of the same product?

Not for an unchanged product with unchanged documentation, but two situations reset the requirement. First, if the battery model changed between production runs - even with the same device model number on the retail box - you need a new UN 38.3 test summary before the next shipment. Second, if IATA issued an annual DGR update that moves your product's watt-hour rating into a different threshold tier, the documentation on file may no longer match your current classification. Review the ASIN's hazmat status in Seller Central before each inbound cycle rather than assuming prior approval carries forward indefinitely.

I sell a bundle that pairs a battery-containing product with an accessory that has no battery. How is the bundle classified for hazmat purposes?

The bundle ASIN inherits the battery classification from the component that contains the battery. The non-battery accessory does not reduce or eliminate the hazmat requirement. The bundle needs its own hazmat review under the correct UN number, with documentation that names the bundle ASIN specifically. A common error is submitting documentation for the individual battery-containing product and assuming it carries over to the bundle listing - it does not. If both items share the same outer box, the full marking and documentation requirements apply to that combined package as a single unit, and the bundle's watt-hour declaration on the ASIN detail page must reflect the battery that is actually inside it.

I enrolled in the FBA Dangerous Goods program. Does that mean my hazmat review is complete for my battery ASINs?

No - enrollment and hazmat review are separate processes. Enrollment grants permission to ship battery packs above the standard FBA watt-hour ceiling into the Dangerous Goods tier of the network. Hazmat review is the per-ASIN document verification process: submitting the UN 38.3 test summary and SDS, having them checked against the ASIN detail page declarations, and waiting for clearance before creating an inbound shipment. A seller can be enrolled in the DG program and still have individual ASINs flagged as non-compliant because the underlying documentation was not submitted, does not match, or was submitted for a different battery model. Enrollment is a prerequisite for certain high-capacity products, not a substitute for completing the documentation review on each ASIN.