Nov 29, 2022 · 12V "battery powered" air conditioners for off-the-grid usage are starting to hit the market. Manufacturers like Nomadic Cooling Co. claim those 12V A/C units can be 70% more efficient than traditional 120V A/C rooftop units and are, therefore, suited for vanlife. In the following guide, we will compare 120V VS 12V air conditioning and define an electrical