The TransitPlus is a portable battery back-up with a 3,000mAh capacity.

Caption:Photo:Josh Miller/CNET
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A USB port charges just about any mobile device. LED lights on this side indicate the TransitPlus' charge level.

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The recessed button initiates recharging through the USB port.

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Prongs for a wall outlet swing out from the side, allowing fast charging.

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A 12-volt plug fits into a car's power points, allowing for recharging while on the road.

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The 12-volt plug swings out in three positions: the angle shown, or perpendicular to the long and short sides of the TransitPlus.

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Published:Caption:Photo:Josh Miller/CNET
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The TransitPlus plugs into a car's 12-volt power point.

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