Switching power supply how to connect to the battery charge
If you do not know the battery and switching power supply positive and negative, you can use a multimeter to connect the switching power supply output port test, the display voltage is positive, then the red pen is connected to the positive, black pen is connected to the negative.
The output of the switching power supply is connected to the positive pole of the battery, the output negative of the switching power supply is connected with the negative pole of the battery, and then the switching power input terminal can be inserted into the socket.
The output of the switching power supply is connected to the positive pole of the battery, the output negative of the switching power supply is connected with the negative pole of the battery, and then the switching power input terminal can be inserted into the socket.
If you do not know the battery and switching power supply positive and negative, you can use a multimeter to connect the switching power supply output port test, the display voltage is positive, then the red pen is connected to the positive, black pen is connected to the negative.
