One of the USB ports will be plugged into my iBolt Car Dock w/ my Galaxy S3 and the other for various other devices (Kindle Paperwhite, iPad Mini, Kindle Fire, Galaxy S4, etc. - family devices). I'm guessing to take advantage of higher powered chargers, I would need to enable "fast charge" the Android devices, otherwise they'll probably just see it as a data USB connection.
I found these two on Amazon. Anyone have experience with them?
Scosche USBC202M Dual 10 Watt (2.1A) USB Car Charger works with iPhone 5, 5S and 5C
Griffin GC23139 PowerJolt Dual for iPad, iPhone, iPod