FAQ:  How to connect the small cylindrical cells together?

Answer:  First never try to solder the contact to these cells. You are sure to damage the cell by over heating. Any temperature above 70*C is damaging to the cells!  Without professional soldering equipment it is not possible to make the connection.

We suggest using the round-cell battery holders. The holders for big „D“ size cells can fit some of the cell. The contacts for the holders for the lithium cells can be purchased form a local electronics shop (check the German Conrad as an example).

See the photos of some possible solutions.