Quantity   Component name
1 × Old Motherboard 2 pin connector the yellow thing on the photos uset to disconnect the battery
1 × Small battery (i have no tools to mesure mah) you can use any size you want
1 × Step up converter to 5v 2a from old PowerBank
1 × 5v Charging and protection circuit
2 × 20 pin male to female strips for creating the hat