Reese's Law on Amazon: Button Cell Warnings and the GCC Your Listing Needs

A CR2032 is the least remarkable component in a kitchen scale. It is also the reason that scale is now regulated by a consumer product safety rule with specific performance tests, three mandatory warning placements and a certificate requirement. Reese's Law, implemented by the CPSC as 16 CFR Part 1263, took effect for products in October 2023, and the gap between what it requires and what shows up on Amazon detail pages is wide.

This article covers who the rule reaches, what the warning has to say and where, what paperwork sits behind it, and how it interacts with the children's-product rules that many button-cell products also trigger.

What the rule covers

16 CFR Part 1263 applies to consumer products that contain or are designed to use button or coin cell batteries: the CR2032, CR2025, CR2016 and CR1632 lithium coins, the LR44 and AG13 alkaline buttons, and their relatives. In practice that is remotes, key fobs, key finders and item trackers, kitchen and bathroom scales, thermometers, watches, calculators, LED candles, hearing devices, fitness sensors and a long tail of small electronics.

The two carve-outs the rule makes:

• Toys for children under 14 that meet the ASTM F963 battery accessibility and labelling requirements are exempt under 1263.1(c). The toy standard already handles the compartment.
• Zinc-air cells are excluded.

Everything else with a coin or button cell is in scope, regardless of the Amazon category it sits in. A key finder in Electronics, a scale in Kitchen and a pet tag in Pet Supplies all get the same treatment.

Two requirements: the compartment and the warnings

Under 1263.3, which has been effective since 23 October 2023, a covered product must do two things.

The battery compartment must meet the ANSI/UL 4200A performance requirements. The standard tests whether a young child can get the cell out, so a compartment that opens with a fingernail or pops open when dropped fails. This is a product design question, and it has to be settled at the factory, not in the listing.

The product must carry the ANSI/UL 4200A warnings on the product itself, on its packaging and in the instructions. The warning has specific elements:

• the safety-alert symbol with the word WARNING;
• a statement that the product contains a coin or button cell battery;
• that swallowing can cause severe or fatal injury, in the standard's words, chemical burns or death;
• KEEP OUT OF REACH OF CHILDREN;
• an instruction to seek medical attention immediately if a battery is swallowed or inserted.

The CPSC's business guidance on button and coin cell batteries sets out both requirements and the dates. The CPSC exercised enforcement discretion for products manufactured before 19 March 2024, which means any current production should be fully compliant. Separately, under 1263.4, packages of the batteries themselves manufactured or imported after 21 September 2024 carry their own package warnings.

Where the warning has to appear, and where Amazon sees it

The three placements are not interchangeable. A warning in the paper manual does not satisfy the requirement for one on the packaging, and a warning on the box does not satisfy the requirement for one on the product. Check all three, and keep a photo of each.

For an Amazon seller, the packaging warning is the one that is checkable from the outside. Compliance scans, and anyone reviewing a listing, look at the product and packaging images and at the listing text for a UL 4200A warning. The rule in the electronics pack fires when no warning is visible on any packaging or product image and none is quoted in the text, and it stays quiet when the warning is present, when the product is a toy for under-14s that states ASTM F963 compliance, or when the battery is sealed, non-replaceable and the packaging says so.

That gives you a simple way to be visibly compliant: include one image that shows the back of the retail box with the warning legible. It also protects you from a subtler problem. If a listing has only lifestyle images and a product-on-white main image, nobody can tell whether the box is compliant, and a reviewer who cannot see a warning will assume there is none.

The certificate behind the label

Reese's Law is a consumer product safety rule, which brings the CPSC certification machinery with it. A covered product needs a General Certificate of Conformity (GCC) certifying it to 16 CFR Part 1263, with the content 16 CFR Part 1110 prescribes, supported by a test report to 16 CFR 1263 and ANSI/UL 4200A covering the compartment performance and the warnings.

Most importers in this category have neither. The factory may have a UL 4200A report for the compartment that nobody asked for, and the GCC, which is the importer's document to issue, does not exist. The electronics pack lists both as required documents for any product detected with a button cell, and records the GCC as a registration-style obligation that should be dated and kept.

Two more CPSC obligations travel with any consumer product and are worth knowing here. If you obtain information that a product fails to comply with a rule or contains a defect that could create a substantial hazard, Section 15(b) requires you to inform the CPSC immediately, within 24 hours. And if the product is marketed to children, a different and heavier set of rules applies.

When the product is for children

A kids smartwatch, a children's digital thermometer, a light-up fidget toy with an LR44: these are children's products under the CPSIA, which means a Children's Product Certificate based on third-party testing (16 CFR 1107 and 1110), tracking labels and the applicable children's standards, on top of the battery rule.

The electronics pack adds a children's-electronics check that flags, among other things:

• a user-accessible or removable battery on a product for young children without a tool- or screw-secured compartment (ASTM F963 section 4.25), or a button cell without the Reese's Law warning;
• "safe for kids" or "non-toxic" as an unqualified safety claim;
• hearing-safety claims such as "85 dB safe volume" with no test basis;
• no age grading at all.

If the product is a toy that meets ASTM F963's battery requirements, say so in the listing: it is the one exemption from 1263 and the scan looks for the statement. If it is a children's product that is not a toy, both rule sets apply and the GCC becomes a CPC.

A compliance pass for button-cell products

1. Confirm the product uses a coin or button cell, and whether it is a toy under 14 that meets ASTM F963 (exempt) or not (in scope).
2. Get the UL 4200A compartment and warning test report from the manufacturer. If there is none, the product needs testing before it is sold.
3. Issue the GCC, or the CPC for a children's product, and keep both with the report.
4. Check the warning on the product, the packaging and the instructions against the five elements above.
5. Add a packaging image that shows the warning legibly, and quote the key statement in the listing text.
6. Check the battery-package warnings under 1263.4 if you sell the cells themselves.
7. Record the 15(b) duty to report in your incident process.

Button cells also sit inside many Bluetooth trackers and remotes, which pulls the FCC authorization rules into the same listing; our guide to the Amazon FCC ID requirement covers that side. The electronics category picks up both when a product says CR2032 and Bluetooth in the same bullet.

The warning is a few lines of text and a symbol. The reason it is missing from so many listings is not disagreement with the rule; it is that nobody checked every image of every ASIN against it. Verid8 does that check across a catalogue, reading the packaging and product images for the UL 4200A warning, and lists the GCC and test report each button-cell product still needs on file.