Why would you use a 1 amp port for all those devices like the Samsung Galaxy devices that are 2 amps?
2005476
I accually use the 2amp port for my Galaxy s5 and the 1amp port for my wife's galaxy s3
1337507
Works great with my Note2. However if you want the full 2 amps (which I do) then you can only plug the Note2 in by itself on the bottom USB slot. If you plug in a second device you will get only 1 Amp each. Pretty standard.
1327189
According to the manufacture's specs both ports seem to be identical as far as the amps provided (2.4 amp each port / 4.8 amps simultaneous). EDIT: I just got the charger in and according to the specification table in the instruction manual each port is optimized to the specific device - 1 port for Apple and 1 port for Android. You can charge a device with iOS 4 or less only in the Apple port but iOS 5 or greater can be charged in either port. However, for Apple devices the Apple port provides higher amps than the Android port, and for Android devices the Android port provides higher amps than the Apple port.
774992
I have been charging my ipad and Samsung galaxy tab using the 2 amp slot and have not had any issues over the last month or two.
146250
If a device requires 2 amps to charge, but you only supply 1 amp, it will not charge, and it, the device will strain the charger, possibly damaging it. This is dependent on the battery type, charging circuit etc.It's best to have more available current than needed.
1116047
'Over-amping' a device is impossible by the laws of physics. So no worries there. The amperage listed per port is the maximum that port is capable of supplying. A device will attempt to consume the amps it was designed to up to the limits of the port it is plugged into. More amps means faster charging. This is all before Apple enters the picture because they do strange things to try and force their customers to buy only their products. So a 2A 'apple' port may not supply the full 2A to non-apple devices and vice versa. Unless Apple got their act together which I doubt...
615308
Sorry, I don't know the answer on the exact amps. Is there a specific reason why you might want 2.1a on both sides? All I can tell you (a non-electrician) is that it supplies enough power on the right side to charge an ipad (but not on the left). So, I suspect that it can't be sharing (1A on each) as that would not provide enough power on the right to charge an iPad.Hope that helps.
801863
Look at the charger that came with the Galaxy Note 4. On the side, in small type, it should have an Output line. My wife's Note 3 says 2 amps. I am pretty sure yours will be the same. You can use the 2.1 amp without any worries. If you use the 1 amp, it will take a long time.
225201
The 2 amp is theoretical for tablets but wor good for smartphones due to bigger batt really it doesn't matter which one you use ....the 2 amp is supposed to charge quicker
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.
356471
To answer your question yes is port supplies the 2 amps. Each USB port is dedicated. Unlike a hub that would split power. I had two iPads connect as well as one iPad and one iPhone and it worked perfectly
1800578
Hello Tim. The USB ports can be used for charging one 2.1Amps device or two 1Amp devices.
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).
789304
This is what this device is designed for - 2 USB ports give extra power to 1 device.
1537041
The 2.1A rating on these types of receptacles are total amps that can be pulled from both USB, not separately. That means if you plug in two iPADs they will share the available amperage up to 2.1A total. This is probably closer to 2.5A realistically to get the 2.1A rating.
839773
I haven't gotten a chance to use it yet but figure it this way ... If you have a newish Samsung device or IDevice and it charges it should be at least 1 amp. If it fully charges a device like the Samsung 4 its probably 2 amps. I was slightly peeved when I got this and it didn't have the normal conversion sticker like other solar usb devices. We both have to hope we didn't buy an 8800 maH battery that doesn't charge anything in the 21st century.
744036
I know what you want to know, but your question has a slight error. You want to know how many mA (milli-Amps) this device puts out- not how many mAh (milli-Amp-hours). From the product description: Dual USB Charging Ports: Provides 1.0 amp of current when charging one device, and 0.5 amps of current to each port when charging two devices from AC or DC power. For AA or 9V charging, single port charging is supported. DC 5V +/- 5% 1000mA MAX So if your device is capable of absorbing 1000 mA (1 A), and you leave it connected for 1 hour, you would deliver 1000 mAh. Two hours, 2000 mAh, three hours, 3000 mAh, and so on. It's perhaps a fine distinction but it is important. HOWEVER- I think you may be disappointed if you try to use this as your primary charger for a device that requires 2100 mA of charging current (note I did not include the 'h'). It will only deliver 1A maximum, so if your Galaxy Tab will even charge from this device, it will take approximately twice as long as it would to charge from the Galaxy Tab's original AC adapter. HTH