First remove the positive part of the car charge, thread assembly, directly screw off. The positive electrode has no extra fly wire, and the PCBA is connected with a spring instead of a wire.
Continue to unscrew the insulating rubber ring between the positive and negative electrodes, and the inner PCBA is faintly visible.
Further remove the inner PCBA module and cover the PCBA with a metal cover on the front, which has a tilted structure and can be tightly fitted to the negative shrapnel after loading into the housing.
In addition, the metal cover is also welded together with the metal housing of the USB-A interface base to strengthen the fixed role. From the side, you can see a capacitor under the metal cover. Remove the metal cover plate and input filter capacitance is 35V 68uF.