18 February 2027 is fixed. What is not fixed is when you have to start — that depends on how many SKUs you carry and how much supplier data you already hold.
Indicative planning guide, not legal advice · runs in your browser, nothing stored
The passport itself is a publishing step measured in minutes. What takes months is getting material composition, recycled content, carbon-footprint and due-diligence evidence out of cell manufacturers and component suppliers who have never been asked for it in a structured form. Every realistic plan works backwards from that, not from the software.
Read next: the battery passport checklist · how to collect DPP data from suppliers · batteries inside imported products