In this project I will show you how to combine general purpose 18650 Li- In order to manufacture battery packs with higher voltage, higher capacity and the most important useful safety measures, ion batteries. These can prevent overcharge, overrelease or even short circuit of the battery. Let\'s start! The video gives you all the information you need to make your own Li- Ion battery pack. However, I will provide you with more useful information in the next steps. For your convenience, you can find a list of parts with sample sellers here. Interest: 6x ir18650-25R Li- Ion battery (USA): INR18650-25R Li- Ion battery (Germany): 6x18650 interval: Ribbon (5mm, 0. 15mm): XT60 connector: 3 S balance connector: 3 s bms: Tape: special working group wire: INR18650-25R Li- Ion battery: 18650 gasket: Ribbon (8mm, 0. 15mm): XT60 connector: 3 S balance connector: 3 s bms: Tape: special working group wire: INR18650-25R Li- Ion battery: 6x18650 gasket: Ribbon (8mm, 0. 1mm): XT60 connector: 3 s balance connector: 3 s BMS: Tape: ad hoc workgroup wires: you already have all the required components and it\'s time for wiring. You can use the picture and scheme of the battery pack I completed in the video as a reference. Here you can find the 123D file and stl file I designed and you can use it to 3D print your own shell. You did it! You made it yourself, Lee. Ion battery pack!