if i charge just one device can i get the full 4.2 amps? orr is it 2.1 amps per port?
650315
As others have stated you can't exceed 2.2 to 2.4 on a given port, but that wouldn't matter, because it isn't the charger that decides the amps to charge at it is the device. The only thing the cable and chargers do is supply enough amps and low power loss. An average device won't pull above 2 amps regardless of the output of the charger. The S4 pulls 1.8amps at its full draw and its oem cable and charger are rated for 2.1 if i remember correctly.
650316
No, the most you get from each individual port is 2.4 amps. Or the 4.2 amps using both at the same time.
650317
I don't know the amp break down but I do know it charges like no tomorrow. You can charge a iPhone and a iPad in short order. You won't be disappointed...
1200215
According to the very small name plate the rating is 5.1 volts at 0.85 amps. If you need more current many two port chargers deliver 2 plus amps. Search Amazon for "USB Charger" I have one from POWERGEN.
1396249
Most PC's and chargers limit the current to about a 1/2 amp. That's due to the USB 2 spec. There are a few, such as Apple, Kindle, and others, that charge at higher currents. I would have no reservations using this extension at 2.1 A. Go for it.
1342338
The charger works very well, at 1 Amp and 2.1 Amps. And both together simultaneously also. Your device is a separate issue, and it's function depends on the cord you have and your device's amp requirements.
1062260
The output rating on this is 1.5 amps. Manufacturer notes, "Charge up to 2 small USB compatible electronic devices".
187426
Yes, there is 2 USB ports on there, one has a 2.0 amp output that will charge it perfectly almost 2 full times in one day
2013564
It has a 1 amp port and a 2 amp port, I charge my iPhone and iPad at the same time but you can't charge two iPads. Look at the output rating on your plugs.
629126
I would check with Wagan to be sure, but as near as I know the output from any port is standard USB at 2.1 amps. I hear some Samsung devices have problems due to their proprietary wiring of USB.
1292521
The vendor says the power is distributed based on draw, so yes, one port could have 4 amps leaving the rest with nothing (so don't plug anything else in).
1992687
There is only one USB port so you can only charge both devices at the same time if you have a splitter. Otherwise you can only charge one device at a time.
2021129
Both ports individually will provide up to 3.1 amps as long as there is only one device attached. When two devices are attached the "A" port gets the bigger share of the 3.1 amps and is the only port to use with an iPad. Clearly, with two devices attached neither will charge as quickly as when any one device is charged by itself. The 3.1 amp total combined output is inadequate to charge two iPads simultaneously.
1800578
Hello Tim. The USB ports can be used for charging one 2.1Amps device or two 1Amp devices.
1666022
The product images show that this outputs 4 amps max. I don't own this product, but my guess is that each port is 1 amp.
423988
Remember, this is a 4 amp unit. That means that any single device which needs less than 4A to charge, will be charged.... as long as that is the only device attached. If you have other devices attached, they will be drawing some current, usually up to 900 mA for a USB3 device... sooo something like an iPad may not be able to draw enough current. Most other devices should be ok.
1274437
Total the charger is 4.2 amps, which is 2.1 each USB port. I chose this particular charger because it came highly recommended when I did a search for most powerful car charger
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.
1660997
This model can charge 2 devices at once. Output 1 specs = DC5V 0.6A; output 2 specs = DC5V 2A.