I don't know if I would say that the battery pack is complicated. It's been through quite a few revisions to simplify the assembly and the fabrication of the parts. The task of making a unit that has connection options as well as easy to replace cells has not been easy. Every method has its drawbacks, but all you can do is try to improve it. Once the model is complete and testing shows it will function in a typical environment, I will see if it is worth producing. I will be putting the ABS units through the ringer. I just finished printing a 2X4 cell configuration and it seems pretty stiff (Even when I was pulling it off the 80 degree C heated platform).
