Assuming you already have a charging payment system set up, either through a card or an app, a good starting point would be to check the website for your charging partner which will show charge point locations in Europe, or partner charging groups that you can also use with your payment system. We would also suggest looking at your route and other areas you are planning to drive through and check the charger coverage there also - we would suggest using sites such as chargemap.com/ , shellrecharge.com/en-gb and www.zap-map.com/