Stackable (E-bike) 18650 Battery Pack

This Stackable Battery pack uses an 4xBattery Holder to connext and fixate several 18650 Size Lithium Batterys, without the usage of printed circuit Boards.
Cables can be soldered directly to the Pins.

link to the Battery Holder:
http://www.digikey.com/product-detail/en/BK-18650-PC8/BK-18650-PC8-ND/2330515

for my E-Bike i choosed an configuration of 13s 3p = 48 Volt Battery Pack.

BMS (Battery Management System) can be found here:

http://www.ebay.de/itm/400970930422?_trksid=p2057872