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While I am experimenting with Android I found it annoying that the device even if is plugged in on the PC using a USB is discharging.

THe problem is that I am performing some intensive experiments and are consuming a lot of power. (processing, screen, internet)

I know that every USB port or USB HUB port offers 500mA power in each connected Device and PowerTutor shows that the device consumes near 800-900mA thus it drains the battery.

Can you please suggest me some options?

For example:

Are there any USB Hubs offering 1A as output? Can I use a dual usb cable instead? The same usb cables used to power hard drives?

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You can use Wireless ADB (note: root required) to connect over wifi and then you can plug in your device to the power socket.

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