Quantity   Component name
4 × PKCell ICR18650 3.7V 3000mAh Li-Ion Battery
1 × 4-Cell 18650 Battery Cell Holder
1 × Slide Switch
1 × Battery Power Indicator
1 × SW6206 22.5W Power Bank Module w/ Built-in NTC Thermistor
1 × DC Wattmeter w/ USB Output for Power Output Testing