swilmoth :
I have 3 units. A Ipad air (lightning), a Samsung s5 (usb micro 3.0), and a Bluetooth (usb 2.0). Is there a single quality car charger with multiple cables that will charge all of these (2 at a time)? and is there a site that compares (reviews) these? I know that I can charge the s5 with a usb 2.0 but prefer 3.0 . Belkin says they are making something like this but it is still unavailable for some reason.
First of all, i don't think USB2.0 or 3.0 has anything to do with charging speed, which, to my my knowledge, depends on the power (how many watts) a charging port puts out. As all USB chargers have the same output voltage of 5V, current value talks finally. Now 2.4A is the perfect output current for most mobile devices, given that a 5V/2A port is able to charge your iPad air and Samsung Galaxy S5 quite fast.
This USB charger, with car adapter, is able to charge 5 mobile devices at the same time. If you use only 3 of them, you can get 2.4A output for all. I think it's more than enought for you.
Axgio PowerSlot L5U