Buy yourself a 12V cigarette lighter adaptor to 220V to power all your electric devices. Such an adaptor is sufficient to power you laptop or a light and sometimes they offer a USB charging port as well. The prices range between 30 and a couple of hundred Euros. You don’t need to buy the most expensive one, but you also should not buy the cheapest one. A good shop will allow you to test the adaptor in your car and if it works, FINE!