INDOOR POWER SUPPLY: When this expansion board is used as an indoor UPS power supply, insert the USB interface into A common 5V 2A power adapter, and the external USB-A interface can output a maximum of 5.1V 3A.
PROTECTION FUNCTION: The main board of this expansion board integrates overcurrent and over-discharge protection functions.
BATTERY LEVEL DISPLAY: The 4+2 LED indicator lights on this expansion board are used for charging, discharging and battery level display.
OUTDOOR POWER SUPPLY: When this expansion board is used as an outdoor portable power source, the main board is powered only by a , and the maximum external power supply capacity is 5.1V 2.5A.
DUAL WORKING MODE: This expansion board is suitable for both outdoor portable power supply and indoor UPS power supply.