Quantity   Component name
1 × SQ11 action camera https://www.aliexpress.com/wholesale?SearchText=SQ11 ( 8$ )
1 × 18650 protection board https://www.aliexpress.com/wholesale?SearchText=18650+protection+double+MOS ( 0.50 $ )
1 × Salvaged 18650 gotten from an old laptop battery
1 × Cell spring terminals gotten from a broken battery box
4 × M3x20 screws and nuts