if the capacity is 5200mAh, or 5.2 amps, why are both ports only 1.2A and 1A?
1596760
The 5200mAh is in reference to the battery capacity- meaning 5200 milla-Amp-hours or 5.2 amp hours. The amp-hour can be misleading though. Basically the 5.2 amp hours means it can last 5.2 hours with a load of 1 amp or 1 hour with a load of 5.2 amps. The ports are only 1 and 1.2 amps because a USB port is only 5 volts. Most accessories charge at a slow amp so the battery does not get real hot. (this reduces the life of the battery) The higher the amp output the faster the battery charges but the hotter it gets. Typically battery chargers will have an initial high amp output to charge fast but then slow it down so the battery does not overheat. Components (resistors, capacitors, IC chips so on...) dissipate electricity in the form of heat. If they get too hot they get damaged. Same concept for a battery. By making this thing only output the 1 or 1.2 amps it can cover a wider variety of electronic devices. You can always charge your phone (or whatever) with a lower amp charger. However, you never want to plug it into a charger that is a higher rating then your device. You will break it. My Galaxy S4 charger is 2.1 amps (I think). The only thing it would do is take a little longer to charge (and not get as hot when you touch it).
1596761
It is 5200mAh which is 5.2 amp hours. Both ports are only 1.2A and 1A to avoid overheating the battery which would reduce it's useful life.
48344
The speed at which it charges devices. If you have a device that supports 2.1A it will charge much faster than on the 1A port.
1339440
I really wish people would look more closely at the product. I myself am trying to find the same information as you and almost bought this unit. However, taken directly from the manufacturer's website (Accell), I found the following: USB CHARGING: 2 Ports, 5V, 2.1A Shared. So unless the manufacturer incorrectly described it's own product, this, just like most others, have a total of 2.1A for all usb ports. If using both usb ports at the same time the 2.1A will be split, reducing the charging time of 2 devices (ipads, tablets).
31420
I didn't try to charge two cellphones at one time. The 2.1A port is usually designed for tablets since most smart phones have charging current of 1A. The 2.1A port could charge a cellphone but it might cause some damage on the charging IC or/and the battery of the phone.
1913982
2A = 2 Amperes, as in current for charging tablets and more power-hungry devices. I don't know the answer, I'm just clarifying for those that don't get it, and those that might be able to answer.
1440376
I had issues with the 1amp ports if I was charging an item that was left powered on, ranging from an older model ipod (2nd get I think) to a mobile wifi device and a Galaxy Gear watch. The 2 am ports on the other hand seemed to charge everything I threw at them, and if the device was turned off then it owuld charge on the 1amp fine. For some reason most devices would register the 1amp ports as a USB connection like plugging into a computer.
1985279
Check your power supply/charger, it might not be supplying the 2 amps necessary for correct operation.
1339439
The packaging clearly states that the 2.1A is shared between the 2 USB ports. It says if you're charging a tablet & plug something in to the 2nd port, the tablet's charging rate will drop.
168987
Dr. James M. Peterson - You are giving INCORRECT INFORMATION. Android post is 1.5a and not 1.0amps. Please change your information.
824204
The 2.1 amp port is the one closest to the edge of the device. New Trent has said it will be labeled properly in the future.
230663
my old battery has 10.8v, 4.7wh and 5200ma on it. I ordered by the HP part number and received a 'replacement' that has 10.8v and 5200mAH on it.
1684597
The difference between ports is the amps that the specific port pushes to device
48342
I'm not an expert by any means, but it seems to my understanding that 2.1A would be more powerful than 1A. These numbers with the "A" refer to the input and output strength of the charger/battery pack. You have to plug in the charger first to fill it up so that you can then charge your phone or device. A charger with a 2A input means that when you plug the charger into a wall socket to charge it up, it will charge at a faster rate than if you had a charger with a 1A input. Same thing with the output: a 2A output charger will charge your phone or device quicker than a 1A output charger. I hope this helps. I'm not an expert by any means, but it seems to my understanding that 2.1A would be more powerful than 1A. These numbers with the "A" refer to the input and output strength of the charger/battery pack. You have to plug in the charger first to fill it up so that you can then charge your phone or device. A charger with a 2A input means that when you plug the charger into a wall socket to charge it up, it will charge at a faster rate than if you had a charger with a 1A input. Same thing with the output: a 2A output charger will charge your phone or device quicker than a 1A output... » Read More I'm not an expert by any means, but it seems to my understanding that 2.1A would be more powerful than 1A. These numbers with the "A" refer to the input and output strength of the charger/battery pack. You have to plug in the charger first to fill it up so that you can then charge your phone or device. A charger with a 2A input means that when you plug the charger into a wall socket to charge it up, it will charge at a faster rate than if you had a charger with a 1A input. Same thing with the output: a 2A output charger will charge your phone or device quicker than a 1A output charger. I hope this helps. « Show Less
1062260
The output rating on this is 1.5 amps. Manufacturer notes, "Charge up to 2 small USB compatible electronic devices".
1925408
Because 2A is the power of the battery and 2000 mAh is the duration of the charge. Both of them are very useful data.
1304462
Total = 750mA both ports combined. This isn't suitable for charging more than one modern phone at a time (It's very under-powered.)
1337549
Where are you getting the 2A or even 5A from? both sounds unusually large. the receiver is limited to 5W at 5V so that's 1A. Qi specs can be found here. http://www.wirelesspowerconsortium.com/developers/specification.html