Button Batteries in Toys: What to Check

A swallowed small part is dangerous mainly because it can obstruct. A button or coin cell is dangerous even when it passes freely: lodged against moist tissue, it generates a current that produces hydroxide at the negative pole, and that alkali burns through tissue from the outside in.

This is why the usual reassurances do not apply. A child who is breathing normally, eating, and playing can still have a battery burning in the esophagus. Early signs — drooling, refusing food, a cough, a raised temperature, irritability — look like an ordinary childhood illness, which is exactly why these injuries are so often found late.

The 20 mm lithium coin cell used in remotes, scales, thermometers, light-up novelties and many toys is the size most likely to lodge in a young child's esophagus rather than pass through.

Reese's Law was enacted in August 2022. The CPSC rule implementing it, 16 CFR part 1263, incorporates ANSI/UL 4200A-2023 and applies to consumer products containing button cell or coin batteries manufactured or imported on or after 23 October 2023. It requires that a battery compartment be secured so that opening it needs a tool such as a screwdriver or a coin, or at least two independent and simultaneous hand movements, and it sets warning-label requirements for the product and its packaging.

Toys are treated separately. A product designed, manufactured or marketed as a plaything for children under 14 that complies with the battery accessibility and labeling provisions of the federal toy standard, 16 CFR part 1250, is exempt from section 2 of Reese's Law. CPSC's own position when it proposed change was that the toy standard did not address all of the identified hazards and was less stringent than the rule for non-toy products.

The exemption is narrower than it first sounds, in two ways that matter at home. A product age-graded 14 and over is not a toy for this purpose and must meet the full 1263 requirements. And a children's product that is not a plaything — light-up shoes are CPSC's own example — is covered by 1263 rather than exempted. So within one household the same coin cell can sit behind three different legal standards depending on what the object is called.

On 13 August 2024 CPSC published a notice of proposed rulemaking to add button-cell performance and labeling requirements to the toy standard, with an effective date proposed at 180 days after any final rule. When this guide was checked on 13 August 2026, no final rule had been published. Check CPSC's business guidance page for the current position before relying on this paragraph.

None of that makes toys unsafe by default, and most reputable toys secure their compartments with a screw regardless of whether a rule compels it. It does mean the compartment is worth checking yourself rather than assuming a regulation has already checked it for you.

This takes about a minute per toy and is a one-way screen: it can tell you to stop, never that a product is safe.

Go to an emergency department immediately, and call the National Battery Ingestion Hotline on 800-498-8666 (or Poison Help on 800-222-1222) on the way. The hotline gives real-time instructions to families and to clinicians. Do not wait to see whether the child becomes unwell, do not induce vomiting, and do not give food or drink beyond what the hotline or a clinician tells you.

The same applies to a battery placed in a nose or an ear, which causes tissue damage by the same mechanism and is easily missed.

The National Capital Poison Center's triage guideline includes an interim measure for children aged 12 months and over who swallowed a battery within the previous 12 hours: 10 mL of honey every 10 minutes, to a maximum of six doses, given on the way to hospital. It is explicitly not a treatment — it slows tissue damage without preventing it, and it must never delay transport or the removal of the battery. Do not give honey to a child under 12 months, and do not give it if the battery may have been in place for more than 12 hours. Follow the hotline's instructions over anything written here.

For a child under about six, the useful question is not whether a toy contains a coin cell but whether the compartment is secured with a screw and whether the household also contains a dozen unsecured items with the same battery in them. The toy is usually the safest object in the room; the remote is not.

Where a choice exists, a toy powered by AA or AAA cells removes the hazard rather than managing it. Where it does not, buy from sellers you can trace, so a recall or a fault has somewhere to go.