The U20 i-UP 5400 is a hi-capacity 5400mAh external portable, rechargable lithium-Polymer battery pack that allows you to power up your PDA or MP3 player multiple times on a single charge..

Instead of charging your device by mains or in-car power, simply plug your unit into the battery pack using the supplied adapters and watch your device's battery power increase.

If the adapter for your particular device is not included in the pack you can connect to the USB output using your device's standard USB sync/charge cable.

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