So the 12w charger and the the Scosche dual USB (5amp Max each) both provide 1.0a to an iPhone 6+. At this point i definitely feel like the iPhone dictates what i needs and pulls that. Also, i noticed this morning that my power meter has 2 different ports. Power only and Data+Power. the data+power side only provides 0.5A, even with that Y adapter attached. Someone earlier in the threat said that may happen, interesting to actually see it happen. I've come to the conclusion that the ports are sufficient enough to prevent the phone from draining when using Waze with the screen on, but don't expect any increase in your charge. I'm going to keep using it this way for now, and use the center console port when an emergency charge is need. Probably not that often is my 6+ could last 2 days if needed.