You have more options for cooling fans, including 5V, 24V, and 48V varieties. A 12V cooling fan matches most battery systems better than other choices.
The MaxxFan Deluxe 7500k is a great choice for anyone looking to enhance the existing vent on their camper van. This vent roof fan fits any standard 14 in x 14 in roof opening
For versatility, the O2COOL 10 Inch Battery Operated Fan comes out on top. You use this fan in your van with AC or DC adapters, or use the built-in battery
Not only is the FiveJoy 360 rotatable, but it features two fans for complete coverage. These fans move independently of each other, so are ideall for mounting on your dash