"I bought the MP1550 charger from Amazon, but Tekkeon really deserves the credit here. My first device wasn't charging my Iphone properly so they sent me an adapter, and when that didn't work they sent me another device. A few weeks later the charger stopped working. Because of the hassle, they upgraded me to their higher model at NO cost to me and it works perfectly. Although it was a hassle not having a working unit for a while, Tekkeon has the BEST support I have ever seen from a company. They handled shipping costs to me (sent via Priority always) and quickly got back to me within minutes. Although they are a small company, don't let their size fool you."