About this 3D model

Based on the previous model, it adds a Daya A3 base with an input for the same size adjustable boost-buck module power supply interface, a reserved Daya A3 battery interface, a DC5521 female seat KD01 boat-shaped switch, three-pin two-stage switching for battery power supply and external power supply output interface, two banana jacks and a DC5521 female seat. It also requires self-tapping screws M2*6.