Requires electric vehicle battery facilities to affix sign developed and produced by DEP to all facility entrances as notification that electric vehicle batteries are on-site.

New Jersey's Assembly Bill A1251 requires electric vehicle battery facilities (including those manufacturing, storing, or recycling batteries) to display a standardized warning sign at all entrances. The sign, developed by the Department of Environmental Protection (DEP), must include a "WARNING - ELECTRIC VEHICLE BATTERY" statement, hazard symbols, and be designed for clear visibility. Facilities must post the sign within 18 months of the bill's effective date, with non-compliance resulting in fines of $100-$250 per violation (up to daily penalties for ongoing issues). The law aims to alert first responders to battery hazards like fire or chemical risks during emergencies.