Fimi A3 Battery MOD

This mod allows you to attach an external battery to the Fimi A3 Drone, eliminating the old one.
As you can see from the photo, I cut the cables from the old battery and kept only the cap. In this I made two holes to let out the power cables which then attach to the battery. We need the small electronic circuit that is in the cap and we should solder the two new wires to it