What is the amperage of each port NA and A? Why the SPECIAL case for an Apple? Will my Android charge at 2.1 amps on both usb ports?
311817
The USB ports appear to be parallell and will split 20 Watts @5 Volts or 4 amps. I have been able to charge my Blackberry Z10 and my daughter's iPad II simultaneously without a warning from the devices. It is a sturdy charger and fits snugly in the power outlet.
2223445
It uses a standard USB out for both outlets. One is 1amp and the other is 2.1 amp. It charges my IPad Air and IPhone 5s easily and can do so at the same time.
1769438
I think Daniel Gasse was the only one to answer correctly...In the description it says: USB Port 1 (Designed for Apple products) Compatibility, charges @ 2.4 Ampere Max; Then on the USP port marked by the letters NA (Non-Apple), USB Port 2 (port close to LED, designed for Non Apple products) Compatibility, charges @ 0.5 Ampere Max.
283985
My iPhone 4S charges in all of the ports, including the NA ones. Maybe there are some other devices that are more particular.
401447
All multiport USB chargers will split the power between the ports but this one is 3A. One port will get 2A and the second 1A so it is sufficient to power all new devices that require 2A charge (like iPad and large screen smart phones) and use 1A port to power second device without compromising on time. Just make sure to use original device cable.
1696115
From what I've read on the other dual port chargers you need a 2.4A port to charge the iPhone or iPad. This one seem more for Android devices.
146196
Logically you would think that 'i' stands for Apple and 'G' stands for General/Android. In reality all four ports are connected in parallel to a single power supply inside. So it doesn't matter which port you use. Just remember to keep the total output current under 2.1A to prevent burn-out.
801865
Drew. There are two outputs with different amperages. 1 and 2.1 amps. Look at the picture above. If your phone charger is lower than 1.75 amps, I would use the 1 amp, just to be safe. If it is above that, it will charge faster on the 2.1 amp output.
1628203
It turns out that not all USB chargers are created equal. I bought a USB amperage meter here on Amazon. My computer's USB ports were charging my Samsung phone at .4 amps. I bought a "intelligent" charger here and it charges my phone at 1 amp, 60% faster. I recommend buying an intelligent charger that can figure out how fast to charge your device. Anker 25W 5 port is what I bought. Or buy the DROK Dual-USB meter to figure out what you are really charging at.
1105205
Each port should be able to out put near 900 mAH. The last port is able to do 1.0 amp for charging tablets or smartphones. It is able to do this because the chipset within the last port is designed to act as a standalone charger, where as the other ports can charge but they are meant for devices/data transfer.
675602
There are many USB chargers, max 2 amps. The 1 amps give a better charge, the 2amps give a faster charge. I used the one that came with my cell phone. All USB ports are supposed to put out the same voltage which is around 5 volts. So anything that will charge through a USB port will work.
1426486
Your Samsung Galaxy S5 should charge fine on the 2.1A port, as well as a 1A port. My iPhone 4 charges and works well with either. The voltage is the same. The difference is the amount of power (amperage) available to power devices. Here's a very well written article on USB charging ports for those who want to know more: http://www.extremetech.com/computing/115251-how-usb-charging-works-or-how-to-avoid-blowing-up-your-smartphone
644928
There are two 2 amp USB ports and two 1 amp USB ports. The 2 amp port *should* equal the native Apple charger's amperage but you can look at the Apple charger's technical specifications to be sure. It will not harm your device. It is not a Smart-charger (5v or 16v) like the Asus VivoTab uses.
1683568
From all the reviews I have read about car jab chargers, which was quite a bit. Apple products need a 2.4 amp to charge correctly and all other, smartphones only need a 2 amp to charge correctly. This one is to me the best out there bc u get the best of both.
304651
I use this on my Apple products. As I understand Samsung uses 1.0A and this boost has 2 ports one is 2.4 and the other is 2.0. You may want to look the max amp charge for your device on the internet using google. I am sure some one has posted it. Good luck.
1510844
1A port can charge a smartphone; another port (2.1A), is for larger devices, such as the Apple iPad and other tablets. Currently there are smartphones that accept the 2.1A input as well.
581460
From the Anker website:Not all charging ports are created equal. Standard ports only charge Apple OR Android devices at full speed. Our solution? PowerIQ™ technology intelligently identifies your device and speaks the language it needs for full speed charging. Coupled with an industry-leading 4.8 Amp output, charge any two devices both at full speed. - See more at: http://www.ianker.com/product/71AN2452CS-BA#sthash.mpyMklv2.dpuf