I have this. It is 120v so you would need an inverter. works well to keep food warm.

https://www.amazon.com/Crockpot-Electric-Portable-20-Ounce-Moonshine/dp/B09BDFXNQX/ref=sr\_1\_7?crid=O4T8D3SZQ7Y5&keywords=crockpot%2Bfood%2Bwarmer%2Bportable&qid=1677174730&sprefix=crockpot%2Bfood%2Caps%2C132&sr=8-7&th=1