XTG Technology 4-Port USB Car Charger - Quad Auto Power - Ideal for iPod, iPhone, GPS, Cell Phones

• Input: DC12V 1A max
• Output: 5V= 600Ma 1.5A (For 1-4xUSB)
• Charge up to devices at once from your vehicle's cigarette lighter
• Power and charge up to 4 of your USB powered devices with the proper USB cable (not included)
• Ultra Compact

Most usb devices charge using a standard 500mA usb output. Some devices require 1000mA 1500mA (1-1.5amps). While all 500mA devices charge just fine, this device apparently will not support 1500mA even if only powering a single device despite being rated at 2amps ttl.

So beware, you can charge up to 4 devices requiring 500mA but devices requiring 1500mA will likely not charge at all.

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This charger does not charge most of my mobile devices (Apple iPad, Verizon MiFi and Samsung Vibrant), however it is working fine with other devices like Garmin Nuvi GPS and HTC Touch2 phone.

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Neither iPhone nor iPad can be charged by this unit.

If those are your target devices make another choice.

/S

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This is a great unit and is exactly as advertised Loving the numerous USB outlets. The power output isn't huge but works great with what I need (my iPod, and family's cell phones). A+

It worked pretty great for about a month and then (I guess) just blew out. So the lights are still lit, but it won't charge anything. I would definitely not recommend this.