On a recent trip, I had a portable refrigerator, a radar detector, an iPad and an iPhone plugged into this little device...worked perfectly, didn't even seem to get warm. Also like that the cord is long enough to allow you to put the device anywhere you might want...in our case, we used a 12V outlet in the back of our SUV, but were able to keep the unit between the front seats. Well made for the price and even comes with an accessible fuse should you overdo it. Definitely recommended.