Robot charger docking station

Hi,
This is a charger docking station for Alphabot robot kit. It has a guide lane which allows easy docking.
The female parts requires 3 springs (hot glued to the 3d part) which are soldered to wires and connected to the robot batteries. The male part has copper tape soldered to wires and to a 2S charger. The male part was glued to the charger for added support.
For more details - plz see the attached pics.
Enjoy!