Great product! I funded them via IndiGoGo for several car chargers and wall chargers. Both are great and work as advertised. While I have never sat there with a stopwatch and compared charging with and without the ChargeTech charger, it is clearly faster. As an example, if I take a long road trip and use my Android Nexus 5 for navigation, a regular car charger can't keep up and I will arrive at my destination with a phone that is essentially dead. On the other hand, making the same trip with the ChargeTech allows me to arrive with the battery fully charged. That's enough of a bonus for me. Add in that you can now plug in two USB devices easily to one car charger, and it is a great purchase. The only potential downside that I have noticed is that the charger has such a low profile that getting it out of the car outlet might be a challenge. Since I don't use the outlet for anything else, I just bought one for each car and don't ever intend to remove them.