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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 If 【CHG】 pin is OPEN, the battery charging will be charged automatically started after being powered powering on if and stopped after powering off.If 【CHG】 pin is shorted.SHORT, the battery will be automatically charged once your power adapter connected.
* 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