Reese's Law is a 2022 U.S. law about button cell and coin batteries. It led CPSC to set a safety standard, 16 CFR part 1263, for those batteries and the products that use them. Its core rule: the battery compartment has to be hard for a child to open.
| Part of the rule | Applies to |
|---|---|
| Product rules (the compartment, the testing, the product warnings) | Products made or imported on or after Oct. 23, 2023 |
| CPSC applying the product rules | Products made or imported after March 19, 2024 |
| Warning labels on battery packaging | Packages made or imported after Sept. 21, 2024 |
Source: 16 CFR 1263.1(b); CPSC, Button Cell and Coin Battery business guidance and Reese's Law Implementation Dates
The CPSC rule adopts a standard called ANSI/UL 4200A-2023. A product with a replaceable button or coin battery needs a compartment that takes a tool, or two separate hand movements at the same time, to open. And the compartment must not let the battery out during use-and-abuse testing.
The same standard asks for warnings on the product's packaging, on the product itself where practical, and in its manual.
More than products with a battery inside. The rule reaches any consumer product "containing or designed to use" a button or coin battery, whether the battery is built in, replaceable, in the box or sold separately. A button or coin battery is any single cell that's wider than it is tall.
Say you sell a coin-cell keychain light and ship it without the battery. It's still covered, because it's designed to use one.
The product rules took effect for products made or imported on or after October 23, 2023, and CPSC applies them to products made or imported after March 19, 2024. A separate warning-label rule for battery packaging applies to packages made or imported after September 21, 2024. The table above lays the dates out.
A product that contains or uses these batteries is certified to the product rule. The labeling of the battery packaging is a separate part of the rule. Which one applies depends on what you sell: the product, the batteries, or both.
The free certificate check shows whether your product falls under Reese's Law and which certificate applies, from the product's attributes.
Check which certificate you need — free →The plan puts it in order for your product: which certificate it needs, what to ask the supplier for, and what a marketplace or customs may ask for. It's free, with no signup.
See the plan for your product →The rules on this page do change — an eFiling date, a list, a threshold. Leave an email and a short note goes out if one does: a few a year at most, one click to stop, and the address is used for nothing else. A summary of the guide and a link arrive now, as confirmation.
Information current as of 2026-10-31.
This report is an automated, informational screening tool only. Tiana & Co. is not a licensed customs broker and does not conduct customs business. This report does not constitute legal advice, a compliance determination, or a certification of admissibility for any supplier, product, or shipment.
Verdicts in this report are produced by deterministic code, not by a language model. The explanatory paragraph accompanying each check is model-generated and checked against the cited sources before delivery. No part of this report is reviewed by a person before it is issued, so every material finding and citation should be confirmed against the underlying government source before it is relied on.
This report reflects data available as of the report date. The OFAC SDN and Consolidated lists, the other U.S. Consolidated Screening List constituents, the UFLPA Entity List, CBP withhold release orders, CPSC's eFiling list, and regulatory guidance are updated frequently and without prior notice. Users should re-screen periodically and consult qualified counsel for compliance decisions.
Name-similarity results do not establish or rule out the identity of any company. Where multiple similarly named records exist, none should be treated as confirmed without independent verification against the primary government source.
This tool is not affiliated with, endorsed by, or a substitute for U.S. Customs and Border Protection, the U.S. Department of the Treasury, the Consumer Product Safety Commission, or any other government agency. No warranty is made as to the accuracy, completeness, or currency of any finding.
Use of this report for import, procurement, sanctions-compliance, or investment decisions is at the user's own risk. Anyone with compliance obligations under UFLPA, OFAC, or CPSC regulations should consult qualified legal counsel before making a transactional decision.
This report is an automated, informational screening tool only. Tiana & Co. is not a licensed customs broker and does not conduct customs business. This report does not constitute legal advice, a compliance determination, or a certification of admissibility for any supplier, product, or shipment.
Verdicts in this report are produced by deterministic code, not by a language model. The explanatory paragraph accompanying each check is model-generated and checked against the cited sources before delivery. No part of this report is reviewed by a person before it is issued, so every material finding and citation should be confirmed against the underlying government source before it is relied on.
This report reflects data available as of the report date. The OFAC SDN and Consolidated lists, the other U.S. Consolidated Screening List constituents, the UFLPA Entity List, CBP withhold release orders, CPSC's eFiling list, and regulatory guidance are updated frequently and without prior notice. Users should re-screen periodically and consult qualified counsel for compliance decisions.
Name-similarity results do not establish or rule out the identity of any company. Where multiple similarly named records exist, none should be treated as confirmed without independent verification against the primary government source.
This tool is not affiliated with, endorsed by, or a substitute for U.S. Customs and Border Protection, the U.S. Department of the Treasury, the Consumer Product Safety Commission, or any other government agency. No warranty is made as to the accuracy, completeness, or currency of any finding.
Use of this report for import, procurement, sanctions-compliance, or investment decisions is at the user's own risk. Anyone with compliance obligations under UFLPA, OFAC, or CPSC regulations should consult qualified legal counsel before making a transactional decision.