Shotgun Shell Portable Charger

My cousin wanted to start a trap shooting apparel company so I designed this only to find out this was already a product that could be purchased.Shotgun Shell 18650 portable chargerParts Needed:WireSolderNickel strips for making battery packs1x 18650 battery1x Charge module (paste the next bullet point into amazon and pick the one that looks like the last photo)“Onyehn 5v boost step up power supply module lithium battery charge protection board for diy charger"Tools Needed:Spot welderSoldering ironAssembly Instructions:Spot weld a nickel strip to each end of the 18650Solder wires to the strips at each end of the 18650(don't use too much solder or it wont sit flat)Trim the excess and fold the strips over the ends of the battery as flat as possibleLook at where the charger module will sit when everything is seated and trim the excess wireStrip and solder the wires to the charger module(don't mess up the polarity)Bend the wires and glue everything in place with some CA or hot