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US08665599B2 Portable external power-supplying device 失效
便携式外部供电装置

Portable external power-supplying device
Abstract:
A portable external power-supplying device is disclosed. The portable external power-supplying device implements a unique mechanism to detachably assemble battery units whose number can be adjusted according to user needs, which means the overall aggregate capacity of the portable external power-supplying device is adjustable. The portable external power-supplying device is adaptive to connect and charge a portable electronic device.
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