Ultra Compact High 2.1A Output Dual USB Car Charger - to Power Android, Apple iPad, 2, 3, 4; iPhone 5S, 5C; HTC, Droid, GPS, Smart Phones, Tablets and USB Powered Devices
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- Dual USB port high output auto charger
- 2.1A total output: Charge 1 iPad or 2 phones or lower output devices
- Input: 12-18V DC, Output: 5V DC 2.1A
- Small Light weight design
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Allows you to Charge your iPad along with cell phones and other USB powered devices.
Small Light Weight Design
Includes LED Power Indicator
Compatible with most vehicle power ports
Input: 12-18V DC
Output: 5V DC 2.1A
2.1A total output: Charge 1 iPad or 2 phones or lower output devices
Great for iPad, iPad 2, iPad 3
Top Customer Reviews
A little background on USB charging for those who don't know:
The USB power spec is for 0.5 Amps at 5 Volts... or 2.5 Watts. This was great up until the last couple years when devices have gotten really power hungry, particularly smartphones and tablets and to a lesser extent dedicated GPS's. Some of these devices use over 2 Amps, particularly the tablets like the iPad (or in my case the HP Touchpad).
Manufacturers of these devices therefore had a dilemma. If they had their devices pull more than 0.5 Amps, they risked damaging the power source, which could be a computer, that was only prepared to source 0.5 Amps. Thus the manufacturers have used tricks to determine whether their device is connected to an unknown source, at which point they purposely only draw 0.5 Amps, or to the dedicated charger that was provided with the device, where they can draw all the power they need.
There seem to be two common tricks used. The first is to short the two data-wires together in the charger. This is what most non-Apple devices do. Since a computer or older device wouldn't have done this, the device can assume it is safe to draw all the power it needs.
Apple seems to have taken a different approach, one that I don't fully understand but know can be seen by the fact that the data lines are neither open nor shorted when the charger is plugged in, and is more sophisticated and probably superior, because I suspect it allows the device to know exactly how much power it can use.Read more ›
NOTE that if you're charging an iPhone, iPod or iPad (I have all three) the bottom slot won't charge iPad or iPod Touch 4th gen. The top slot will however charge all devices.
This means that if you have an iPhone (up to 4) or 3rd gen iPod, you can charge using either slot. But your iPad must go into the top slot. If I had two iPads this would be a problem, but I don't so it's not :) Just consider that before you buy. I have 3rd and 4th gen iPods for my kids so I just have to remember that one has to charge in the top slot if I want to charge both simultaniously. Or if I'm charging my iPad, it owns the top slot. Whatever. You'll figure it out. Just don't buy if you're charging 2 iPads or 2 iPod Touch 4th gens. That's it. Charges fast, I'm happy I bought.
Finally broke. Truth be told, I abused the heck out of it. Surprised it lasted as long as it did. So I figured I'd order another. From the looks of the picture though, it looks like they've made some improvements. It looks sturdier, looks like they ditched the blue LED, and no longer suggests that the iPad needs to be charged in the top slot. Looks like they figured out how to simply split the charge. Not sure if this is better or worse, but I'll find out. Not changing my rating. Gonna give it a shot. For the record, the one I previously reviewed looks more like the ...Read more ›
If you are handy with a soldering iron you can take this charger apart and make it charge faster for your Android device. I don't recommend it, however, for just anyone. It will slightly damage the plastic body taking it apart, and you could permanently damage it. Once open find the 4 resistor that are connected to the data lines, with a continuity checker, and remove them. Then short the two center USB port pins together on the PCB, for just one of the connectors. The 2 connectors are in parallel so data pins are connected between them. Then put it back together. You'll have to use super glue to keep the plastic body closed tight. Now it will charge your phone at 1000mA.
Amazon should really change the headline for this product, as it is very misleading. It CANNOT charge just any "USB powered device" with 2.1A (tablets), or even half that (phones).
I will change to 5 stars if Amazon will fix the description to be more accurate.
Most Recent Customer Reviews
Nice product. It worked just fine. Its got two usb ports.
Its average. The issue i had with it is that where the two usb ports go in... Read more
it was delivered in just 2 days and packed perfectly.
My girlfriend like this!!! It is good value for the money.
I purchased this item from Amazon and have had trouble with it from the start. The only way it charges my iPhone is if I manually hold
the device in tight to the charger. Read more