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X703
,* Do not apply power to your Raspberry Pi 4 via the Type-C socket.
* Please use high quality power supply, the low quality power supply will generate surge Voltage, which will damage the board chip. we recommend Panasonic brand NCR18650BD 18650 lithium battery.
* Only the on-board switch is pressed to charge the 18650 battery if 【CHG】 pin is OPEN, the battery will be charged automatically after being powered on if 【CHG】 pin is shorted..
* If short the"AON" pin enable the auto power on function, the blue power button will be no use.
* Be sure to power off & remove the 18650 battery then wait for 2 seconds when toggle charging mode