An Act amending Title 27 (Environmental Resources) of the Pennsylvania Consolidated Statutes, providing for portable battery stewardship and establishing requirements for Battery Stewardship Plans; imposing duties on the Department of Environmental Protection; and imposing penalties.

Added 'medium format batteries' to the list of covered batteries, expanding the program's reach to larger battery types starting in 2029.

Clarified that producers who only manufacture battery-containing products are not liable if the batteries are supplied by a producer already part of a stewardship organization.

Created new definitions for 'advanced battery recycler' and 'metal recycler' to specify the roles and responsibilities of entities processing battery materials.

Redefined 'producer' to include brand owners of battery-containing products, shifting responsibility for compliance to the brand owner rather than just the manufacturer or importer.

Updated safety language to explicitly state that mishandled batteries pose risks to both workers and the community, broadening the scope of safety concerns beyond just facility workers.

Added a requirement for battery stewardship plans to describe how they will inform consumers of end-of-life management options.