Button Cell Batteries in Toys: The Reese's Law Warnings Amazon Checks For

Light-up wands, musical books, LED fidget toys, talking plush, remote controls for toy cars: a large share of the toy category runs on LR44, AG13 or CR2032 cells. Since 2023 those products have had their own federal rule, and Amazon has its own document request to go with it. The listing side is small: a few sentences of warning text. The document side is where sellers get stuck.

This guide covers what 16 CFR 1263 requires, the warning word for word, how the toy exemption works, what Amazon asks for, and why magnets follow the same pattern.

What Reese's Law covers

16 CFR Part 1263 implements Reese's Law for consumer products that contain, or are designed to use, button or coin cell batteries. Since 2023-10-23, under 1263.3, those products must:

• have a battery compartment that resists child access, tested to ANSI/UL 4200A;
• carry the UL 4200A ingestion-hazard warning on the product, on the packaging and in the instructions;
• be certified on a General Certificate of Conformity.

Zinc-air cells, the kind used in hearing aids, are excluded. Since 2024-09-21, packages of button or coin cell batteries themselves need the 1263.4 label, which matters if you sell replacement cells or bundle them. CPSC's button cell and coin battery page is the agency's own summary.

The rule is about the compartment and the warning, not the battery chemistry. A product with a soldered-in coin cell that a child cannot reach still needs the warning, because the hazard the law addresses is ingestion after access, and the warning is how the user learns the cell is there.

The warning, word for word

The ANSI/UL 4200A statement that 16 CFR 1263.3 calls for reads:

WARNING: INGESTION HAZARD: This product contains a button cell or coin battery. DEATH or serious injury can occur if ingested. A swallowed button cell or coin battery can cause Internal Chemical Burns in as little as 2 hours. KEEP new and used batteries OUT OF REACH of CHILDREN. Seek immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body.

Three places: the product itself, the packaging, and the instructions. The standard sets the layout and symbol requirements for the label; the words are not something to summarise. "Keep away from kids, contains battery" is not the warning.

On the listing, Amazon asks for the same language. A scan of the copy looks for the ingestion-hazard sentence or, failing that, the core phrases: "contains a button cell or coin battery", "KEEP new and used batteries OUT OF REACH of CHILDREN", "Internal Chemical Burns", "can cause serious injury or death if swallowed". A listing that describes a CR2032-powered product and contains none of them is the finding; the fix is to add the full statement to a bullet or the description.

The toy exemption: ASTM F963-23

Here is where most toy sellers actually sit. Under 1263.1(c), a plaything for children under 14 that meets the battery accessibility and labeling requirements of ASTM F963-23 is exempt from the whole of Part 1263. F963 is the toy safety standard incorporated by 16 CFR 1250, and its section 4.25 on battery-operated toys requires, among other things, screw-secured compartments for coin cells and small batteries and its own battery warnings.

The practical consequences:

• An F963-compliant toy certifies the battery requirements on its Children's Product Certificate, not on a separate GCC. The CPC should cite ASTM F963-23 and the test report should include the battery sections. Our guide to what a CPC must contain covers the certificate itself.
• The warnings on an exempt toy are F963's warnings, not the UL 4200A text, although nothing stops you adding the UL 4200A statement as well.
• A product that is not a toy, or a toy that does not meet the F963 battery sections, is not exempt and follows 1263 in full: UL 4200A compartment test, UL 4200A warning, GCC.

The line between toy and non-toy is the intended user. A novelty LED keychain marketed to adults is a 1263 product. The same keychain sold as a party favor for kids is a toy, and the F963 route applies. Decide which it is before you choose which certificate to issue.

What Amazon asks for

Amazon's document request for products that contain or use button or coin cells, as our pack records it from provider and seller sources (the Seller Central page itself is login-walled), is:

1. A UL 4200A test report from an ISO/IEC 17025-accredited laboratory, covering compartment performance and the warning label.
2. A General Certificate of Conformity listing ANSI/UL 4200A.
3. Packaging images showing the warning.

Toys exempt under 1263.1(c) are, in practice, flagged by the same trigger and asked for the F963 battery evidence instead: the CPC citing F963-23 and the report covering the battery sections. Sellers who reply "exempt" with nothing attached tend to stay flagged. Reply with the CPC, the report and a note citing 1263.1(c).

The listing attributes feed the trigger. batteries_required, batteries_included, contains_battery_or_cell and has_replaceable_battery tell Amazon a battery is present, and the copy tells it which kind. "3 x LR44 included" is enough to route a listing into the button cell review.

What a scan looks for on the listing

Two patterns account for most findings on battery toys:

• A coin cell product with no warning language. "Light-up wand with 3 LR44 batteries included" and nothing more. The fix is the warning statement, plus a line that the compartment is screw-secured.
• AA or AAA cells in a product for children under 3 with no mention of a secured compartment or a battery warning. F963's accessibility requirements apply here too, and a listing that says nothing about the compartment gives a reviewer nothing to go on.

The compliant version is not long: "Battery compartment secured with a screw; batteries included (3 x LR44). WARNING: contains button cell batteries, keep out of reach of children." That, or the full UL 4200A text, closes the finding.

Magnets follow the same pattern

Magnets are the other F963 hazard with a parallel non-toy rule, and the logic is identical.

• Toys certify F963-23 section 4.38, the hazardous magnet requirements, on the CPC.
• Non-toy magnet products marketed for entertainment, jewelry, mental stimulation or stress relief fall under 16 CFR 1262 for products made after 2022-10-21. Any loose or separable magnet that fits the small-parts cylinder must have a flux index below 50 kG²mm², certified on a GCC.
• Listing cues: a scan flags "magnetic fishing game with 20 strong magnets, ages 2+" because nothing says the magnets are enclosed. "Magnetic tiles with magnets sealed inside each tile; tested to ASTM F963-23" passes.
• Banned names: loose high-powered sphere and cube sets, and the brand names associated with them, are treated as prohibited rather than fixable. If the flux index is 50 kG²mm² or more, no copy change helps.

State in the listing that the magnets are sealed or enclosed and name the standard tested to. That is the whole cue.

Checklist for a battery or magnet toy

1. Decide whether the product is a toy for under-14s. If yes, F963-23 governs batteries and magnets and the CPC carries them. If no, 1263 and 1262 apply with a GCC.
2. Confirm the compartment is screw-secured or otherwise child-resistant, and that the test report covers it.
3. Put the warning on the product, the packaging and the instructions, and the same sentence on the listing.
4. Set the battery attributes accurately and name the cell type in the copy.
5. For magnets, say they are sealed or enclosed and cite the standard.
6. Have the report, the certificate and packaging photos ready before Amazon asks.

Running the check across a battery-heavy catalogue

Battery and magnet findings are easy to fix one at a time and easy to miss across sixty ASINs, because the trigger is a part number buried in a bullet. Verid8 picks up the cell type and the battery attributes on each listing, checks for the ingestion-hazard language and the compartment cue, flags magnet copy that says nothing about enclosure, and lists the GCC, UL 4200A report or F963 evidence the listing needs on file. The full set of checks for the category is on our Toys, Games & Baby page, and the companion rule for age grading and small parts is in choking hazard warnings on Amazon toy listings.