Router with built in battery

The battery in the router generally plays two roles, the first is as a backup power supply for the router, which can still ensure the router to work for a period of time when the power is suddenly cut off, and the second is for mobile portable routers, which look similar to rechargeable batteries, and generally also have the function of rechargeable batteries, with a capacity of 3000mAh-8000mAh, using 18650 cells or polymer cells.

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