This picture shows the hardware necessary to build the modules:

1. The 5 * 14 battery holder - 2 are necessary per module
2. The 10 x 3 mm tinned copper bus bars - 31 cm long - 4 are necessary per module
3. The 7 mm * 0.1 mm nickel strip - 1,5 m / module
4. The 0.5 mm tinned copper wire - for the fuses
5. The battery cells are not shown - 70 cells / module