Review (5/5): We would not have had such a good trip with out this device
Bought this for a cross country road trip. It worked really well. I know that other people have said that it is loud, but I think it is really quiet for what it is doing. We were able to keep 2 laptops, 3 cell phones, and a 3DS gaming system all charged through out 8 days on the road. We would not have had such a good trip with out this device. When you are traveling at highway speeds you certainly don't hear the fan. Sometimes when I am driving around town and stop at a stop light I hear the fan, but it is certainly no louder than the regular interior car noises. We were really pleased with this device.