But high electrical conductivity also means that copper has high thermal conductivity, which makes welding difficult. Any laser heat that is applied to a specific spot quickly transfers through to ...

Through numerous sample runs, [Dries] found that defocusing the laser to a spot size of 1.5mm at low power settings makes for a perfect threadless seam. The resulting test pockets are quite ...

The arrangement is 13S4P, and the cells are held in place with laser-cut acrylic frames. Rather than spot weld the terminals, [Make It Extreme] used a series of strategically positioned slots to ...