Existing law requires the State Fire Marshal, commencing January 1, 2026, to adopt regulations that promote the fire and electrical safety of electric bicycles, powered mobility devices, and storage batteries, as specified. Existing law defines storage batteries for these purposes to include lithium batteries, as provided. This bill would require the Office of the State Fire Marshal to convene a lithium battery working group, composed of specified members selected by the State Fire Marshal, to identify those safety issues associated with lithium batteries and associated charging infrastructure installed or used near or within residential or commercial occupancies that have not already been addressed in the 2025 Edition of the California Building Standards Code, and to recommend potential solutions that will enhance building safety for the State Fire Marshal and other impacted agencies to consider, as provided. The bill would require the working group to deliver the initial research, findings, and recommendations on or before January 1, 2027. Existing law establishes the Building Standards Administration Special Revolving Fund in the State Treasury. Existing law provides that moneys in the fund, which include building permit applicant fees, shall be available, upon appropriation, to the Office of the State Fire Marshal, among other state entities, for expenditure in carrying out various provisions relating to building and housing standards, as provided. This bill would make moneys in the Building Standards Administration Special Revolving Fund available, upon appropriation, to support the working group. The bill would also appropriate an unspecified amount from the fund for specified purposes related to addressing building safety concerns associated with lithium batteries and associated charging infrastructure being installed or used near or within residential or commercial occupancies.