In this comprehensive DIY tutorial, Afonso Santos demonstrates the step-by-step process of constructing a high-performance 36V 12Ah e-bike battery using 50 LG HE2 18650 cells. Starting with a €60 kit from AliExpress, he meticulously walks viewers through the entire battery assembly process, including cell selection, voltage matching, nickel strip connections, and spot welding techniques. The battery, capable of delivering up to 2000W peak power, features a Bluetooth-enabled Battery Management System (BMS) for real-time configuration and monitoring. Afonso carefully explains critical steps such as cell placement, series and parallel connections, balance wire installation, and proper insulation. He emphasizes the importance of precise cell matching, using multiple nickel strips for robust connections, and ensuring clean welding surfaces. The tutorial covers everything from initial cell testing to final battery assembly, including charging procedures and safety considerations. By sharing his detailed methodology, Afonso provides an invaluable resource for DIY enthusiasts interested in creating custom, high-performance e-bike batteries with advanced monitoring capabilities.
