What changes when the battery safety standard gets revised?

The notice in plain terms

A federal agency published a two-page notice on September 3, 2026. It asks the public to weigh in on whether a newly revised voluntary standard makes button-cell and coin-battery products safer. The comment window closes September 17, 2026. After that the Commission must decide whether to adopt the revision or keep the existing rule.

The standard in question is UL 4200A. It covers things like battery compartment security, warning labels, and test procedures. The current mandatory rule incorporates the 2023 version by reference. UL approved and published UL 4200A-2026 in August 2026. The Commission now has 90 days from that notification to accept or reject the changes.

How the review mechanism works

Reese's Law, enacted to protect children six years old and younger, sets a specific timeline. When a voluntary standards body revises an incorporated standard, it must notify the Commission. The Commission then has 90 days to object. If it objects, it must tell the standards body that the revision does not improve safety and that the old standard stays in force. If the Commission does nothing, the revised standard automatically becomes a consumer product safety standard 180 days after notification — or on a later date the Commission publishes in the Federal Register. This is not a proposed rulemaking with a long comment period. The statute gives the Commission a short window. That is why the comment deadline is only 14 days after publication. The notice explicitly states CPSC will not consider comments received after September 17, 2026.

What the revision contains and where to see it

The document does not list the specific technical changes in UL 4200A-2026. It says the standard is copyrighted. A read-only copy is available at no cost on UL's website. Copies can also be purchased from UL at 151 Eastern Avenue, Bensenville, IL 60106, or online. Interested parties can schedule an appointment to inspect a copy at CPSC's Office of the Secretary in Bethesda, Maryland. The notice names Daniel Taxier, Project Manager in the Division of Mechanical and Combustion Engineering, as the contact. His phone is (301) 987-2211 and email is dtaxier@cpsc.gov. The docket number is CPSC-2023-0004. Comments can be submitted electronically through the Federal eRulemaking Portal or, for confidential business information, by email to cpsc-os@cpsc.gov.

What this means for products already in homes

The mandatory rule at 16 CFR part 1263 already requires secure battery compartments, warning labels, and performance tests for consumer products containing button or coin cells. That rule took effect after the 2023 publications at 88 FR 65274 and 88 FR 65296. Products manufactured to the current standard remain compliant unless and until the Commission adopts the revision. If the Commission accepts UL 4200A-2026, future production will need to meet the updated requirements. The notice does not say whether existing inventory would need retroactive changes. It also does not say how many products currently on the market fall under the standard. The Commission's assessment focuses on whether the revision improves safety — not on market impact or compliance costs. The 14-day comment period is the only scheduled opportunity for public input before the Commission decides. After September 17, the 90-day clock continues toward an automatic adoption date unless the Commission acts to reject the revision in whole or in part.