| Quantity | Component name | |
| 1 | × | 3D printed battery socket <a target="_blank" rel="noopener noreferrer" href="https://www.thingiverse.com/thing:1815758">https://www.thingiverse.com/thing:1815758</a> |
| 2 | × | Epoxy putty The glue |
| 2 | × | Wire for hight Amps |
| 1 | × | Solder wire |
NPN