Welcome to Oxford Battery Modelling Symposium (OBMS), a unique event for the battery community. OBMS brings together mathematicians, chemists, physicists and engineers from academia and industry to discuss the latest modelling research and applications. Our philosophy is to invite a small number of outstanding speakers spanning a range of topics from atomistic to continuum modelling, controls and beyond, giving broad and inspiring presentations and open discussions. Our first event in 2019 was attended by 170 people with leading experts including John Newman speaking; our subsequent events were held online during lockdown periods but continued to be wildly popular. We are delighted to invite you back to join us for Oxford Battery Modelling Symposium 2025, which will return as an in-person meeting hosted at the Examination Schools in Oxford. Further details on the event can be found on the event website: batterymodel.ox.ac.uk. The event will also include a poster session and a wonderful dinner at Rhodes House.