Reese's Law and Button Batteries: The Safety Rule Light-Up Etsy Sellers Keep Missing

If you sell anything on Etsy that lights up, glows, plays a sound, or sparkles with a tiny built-in battery, there's a federal safety law you've probably never heard of that applies to your product right now. It's called Reese's Law, and it governs any consumer product that runs on a button cell or coin battery — the flat, silver, coin-shaped batteries inside LED tea lights, light-up signs, flameless candles, fairy-light jars, singing greeting cards, light-up jewelry, and dozens of other handmade favorites.

Most makers assume safety regulation is something that only applies to big factories and brand-name toys. It isn't. Reese's Law applies to the product, not the size of the company that makes it, which means a one-person Etsy shop assembling LED crafts on a kitchen table is covered exactly the same way a major manufacturer is. This isn't a trademark or DMCA problem like the issues we usually cover, but it lives in the same dangerous neighborhood: a federal rule that applies whether or not you've heard of it, that small sellers ignore by accident, and that carries real consequences if it ever surfaces. Here's how Reese's Law actually applies to an Etsy seller in 2026.

What Reese's Law is and why it exists

Reese's Law was signed into federal law on August 16, 2022. It's named after Reese Hamsmith, a toddler who died after swallowing a button battery that had come loose from a remote control. Button and coin batteries are uniquely dangerous to small children: when swallowed, they can lodge in the esophagus and cause severe chemical burns within hours, often with catastrophic or fatal results. The law was Congress's response — a direct mandate to the Consumer Product Safety Commission (CPSC) to create binding national rules so these batteries can't be easily reached by a child.

The CPSC carried out that mandate by adopting an industry standard, ANSI/UL 4200A-2023, as a mandatory federal safety rule in September 2023. The crucial date for sellers is October 23, 2023: any consumer product containing a button cell or coin battery that was manufactured or imported on or after that date must comply. There is no grandfather clause for new production and no exception for small or handmade goods. If you made or imported a covered product after that date, the rule is on you.

"Button cell or coin battery" has a specific meaning. It refers to the small, single-cell round batteries — typically 5 to 25 mm across — like the CR2032, CR2025, LR44, and AG13 cells that power most light-up crafts. The familiar AA, AAA, and 9-volt batteries are not button cells. If your product takes a flat coin-shaped battery, you're in scope.

The three things the rule actually requires

Reese's Law and the ANSI/UL 4200A standard come down to three concrete obligations. If you sell covered products, you need all three.

1. A child-resistant battery compartment. This is the heart of the rule. The battery compartment on your product must be built so a young child can't easily open it and get to the battery. The standard accepts two ways of achieving this: either the compartment requires a tool to open — such as a screwdriver or a coin — or it requires at least two independent and simultaneous hand movements to open (think of the press-and-slide or press-and-twist mechanisms you see on childproof products). A compartment that pops open with a fingernail, or a battery you simply slide in behind a friction cover, does not meet the standard. The product also has to keep the battery secured even after reasonably foreseeable use and abuse — drops, pulls, and the kind of handling a real product gets.

2. Warning labels in the right places. The standard requires specific battery-ingestion warnings to appear in multiple locations: on the product's packaging (specifically on the principal display panel — the front face a buyer sees), on the product itself where practicable, and in any accompanying instructions or manuals. The warning has to communicate the ingestion hazard, tell users to keep batteries away from children, and direct them to seek immediate medical attention if a battery is swallowed. The exact wording and format are defined in the standard, so you can't just write your own casual version — the content and placement are prescribed.

3. Child-resistant battery packaging. If you sell the loose batteries themselves, or include spare button/coin batteries packaged separately alongside your product, those battery packs have to meet child-resistant packaging requirements under the Poison Prevention Packaging Standards. In practice this matters most for sellers who throw in "extra batteries" with a light-up item — those extras need compliant packaging, not a loose battery dropped in a bag.

The part Etsy sellers miss: you are the "manufacturer"

Here's the conceptual jump that trips up handmade sellers. Most Etsy makers who sell light-up products don't manufacture the electronics — they buy LED modules, battery holders, or pre-wired components from a supplier (often overseas) and assemble them into a finished product: a resin night light, a glittered light-up sign, a wood-and-LED nursery piece. It feels like you're just decorating someone else's electronics.

Under the law, that's not how responsibility works. When you assemble components into a new finished consumer product and sell it under your own shop, you are the manufacturer of that product for compliance purposes. The obligation to have a child-resistant compartment, the correct labels, and the required certification lands on you — not on the faceless component supplier. "I bought the light part from a wholesaler" is not a defense; it's actually the moment you became the responsible party. This is the same trap that catches sellers under CPSIA children's-product safety rules: sourcing a component doesn't transfer the legal duty to whoever made it.

Certification: CPC versus GCC

Reese's Law doesn't just require your product to be safe — it requires you to certify and document that it is. Which certificate you need depends on who the product is for.

If your product is designed or intended primarily for children 12 and under, it's a "children's product," and it must be tested by a CPSC-accepted third-party laboratory and covered by a Children's Product Certificate (CPC). This is the stricter path: independent lab testing is mandatory, not optional. A light-up unicorn nightlight, a kids' light-up bracelet, or a child's room sign falls here.

If your product is a general-use item — something not specifically aimed at children, like a decorative LED sign for adults, a flameless candle, or an ambient light jar — you issue a General Certificate of Conformity (GCC) instead. The GCC certifies that the product complies with ANSI/UL 4200A, based on a reasonable testing program. Third-party lab testing isn't strictly mandated for general-use products the way it is for children's products, but you still have to be able to back up the certification, and the compartment and labeling requirements apply identically.

Either way, the certificate has to be a real document: it identifies the product, the rule it complies with, the manufacturer/importer, the date and place of manufacture, and the testing it relies on. It's meant to accompany the product through the distribution chain and be available to the CPSC and Customs on request.

A supplier's logo is not your certificate. If an overseas supplier tells you a component is "Reese's Law compliant," ask for the actual test report and documentation — and understand that compliance attaches to your finished product, not just the part. The way you mounted the battery holder, the cover you designed, and the labels you applied are all part of what gets certified. You can't inherit a certificate for a product you built yourself.

The toy exception — and why it's not a loophole

There's one important carve-out. Children's toys are exempt from Reese's Law specifically, as long as they comply with ASTM F963, the federal toy safety standard. That's because ASTM F963 already contains its own strict requirements for securing button batteries in toys. So a genuine toy isn't escaping regulation — it's just being regulated under the toy standard instead of under Reese's Law.

For an Etsy seller, this is a distinction without much relief: if you make light-up toys, you've simply traded Reese's Law for ASTM F963 (and the CPSIA testing and certification that comes with toys for kids). Either road leads to a child-resistant battery compartment, warnings, and a certificate. If you're selling toys, our guide to ASTM F963 toy safety testing covers that path in detail.

Which Etsy products are squarely in scope

If you sell any of these, Reese's Law is in play the moment a button or coin cell is inside:

LED tea lights and flameless candles. Light-up signs, light boxes, and marquee letters that run on coin cells. Fairy-light jars and lanterns with a built-in battery pack. Resin and epoxy night lights. Light-up jewelry, badges, and wearables. Singing or light-up greeting cards with a sound module. Light-up tumblers and drinkware with an LED base. Glowing ornaments, light-up shadow boxes, and illuminated home decor. Electronic novelties, finders, and gadgets that take a coin cell. Light-up costume accessories and props.

If your product has no button or coin battery — printed art, plain candles, fabric goods, jewelry without electronics, digital downloads — Reese's Law simply doesn't apply. The trigger is the battery type, not the price or craftsmanship of the item. And note that a product running purely on AA or AAA cells is outside Reese's Law, though it may still face other rules.

How this stacks with everything else

Reese's Law rarely arrives alone. A light-up children's product can simultaneously trigger Reese's Law (or ASTM F963 if it's a toy), CPSIA testing and tracking-label requirements, and FCC Part 15 rules if it contains any digital circuitry. A decorative item might also need a California Prop 65 warning depending on its materials. None of these rules exempt the others — they stack, and each one is independently enforceable. The practical takeaway is to map all the rules a product touches before you list it, not just the one you happened to hear about first.

What enforcement actually looks like

The CPSC enforces these rules, and it has real teeth: it can issue civil penalties, order recalls, stop non-compliant goods at the border with Customs, and publish public warnings. Enforcement is live, not theoretical — in 2025 the CPSC publicly warned consumers about button-battery packs sold in the US that failed the child-resistant packaging requirement, an example of exactly the kind of violation Reese's Law targets.

Realistically, a tiny one-off Etsy shop is not the CPSC's first priority. But the agency isn't the only source of exposure. A buyer can report a product, a competitor can flag your listing, Etsy can pull items for safety-policy violations, and — most seriously — if a child is ever harmed by a battery from your product, non-compliance turns an accident into a liability nightmare with no defense. This is low-probability, high-consequence risk, and it grows as your volume becomes visible.

A practical checklist for light-up Etsy sellers

Start with the only question that matters: does your product contain a button cell or coin battery (CR2032, LR44, and the like)? If no, you're outside Reese's Law. If yes, work through the rest. Confirm the battery compartment is genuinely child-resistant — it needs a tool to open, or two independent and simultaneous movements, and it must hold the battery through normal drops and handling. Apply the required ingestion warnings on the packaging's front panel, on the product itself where practical, and in any insert or instructions. Package any loose or spare batteries in child-resistant packaging. Decide whether your product is a children's product (third-party lab test plus a Children's Product Certificate) or general-use (a General Certificate of Conformity), and create and keep that certificate on file. Demand real documentation from component suppliers — and remember the certified product is the one you finished, not the part you bought. Finally, fold this into the same routine you use for your monthly compliance review so it never becomes a last-minute scramble.

None of this is legal advice — battery-safety compliance has genuine technical nuance, and the right testing and certification path depends on your exact product, so for a real product talk to a CPSC-accepted test lab or a product-safety consultant. But the headline for light-up Etsy sellers is clear: if a coin battery powers your product, Reese's Law applies, the safety work has to be done before you list, and being a small handmade shop doesn't make you the exception.

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