2) External power supply wiring diagram
Note: If the voltage range of the tested battery (power supply) is not working (6-80V),
the external power supply wiring mode can be used. First, adjust the jumper cap of
the power supply selection interface to “ 3W ” , and the external power supply.
Connect the positive and negative poles to “+Vext-”, pay attention to “+” to the
positive pole of the external power supply, and “-” to the negative pole of the
external power supply; then connect the positive and negative poles of the battery
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