Everyone thinks the faster your charger can charge a cell phone the better. I strongly disagree. Why? Most every cell phone and iphone battery has its own electronic circuit within it. If your charger attempts to throw too much juice at it the internal circuitry can be damaged. And we don’t want to damage an $700 iphone do we? So we designed our own self regulating charging system. It senses the cell phones circuitry it is connected to and will charge your cell phone at the FASTEST and SAFEST level.