I want to buy an M2 Macbook Air to use in our caravan full time. Most of the time we are off grid so no 240 volt power. (Australia). Is it safe to use a 12 Volt Plug (we have sockets in the van) and if so must it have specific specs? Obviously a usb c female socket on it. I see Apple sell a range of Mophie brand ones but only mention for iphone or ipad. Currently have a Microsoft Surface Pro 6 with the Microsoft 12 volt power lead that works well. It should do it was $120.