Blown fuse, it is common. Sometimes those chargers have voltage spike when turn off. it could possible blow the fuse. Luckily, they r cheap, just a buy a pack from partstore, u'll need it in the future. Ur dealership will probably give u few fuses for free if u ask, since u just bought the car.
The cap of the fuse box should state "power outlet" on fuse label.
I know those fuse box picture and words are Microscopic , and the numbers and diagrams are as confusing as the periodic table.
so, just Check all the yellow 20amp fuses, if that's easier for u to do, there should be only like 6 or 7 yellow 20A.
I think all 3 power outlet fuse is more toward the front of the car for ur minvan.