This tutorial provides a detailed, step-by-step guide for DIY enthusiasts on how to construct a custom lithium-ion battery pack for an electric bicycle using 50 Panasonic NCR18650b cells. The creator walks viewers through the entire battery-building process, starting with selecting materials like a Hailong 1 battery case, nickel plates, a Battery Management System (BMS), and specialized tools such as a spot welder. The video demonstrates how to arrange cells in a 10s5p configuration (10 series, 5 parallel) to create a 36-volt battery with 17 amp-hours capacity, which can be adapted for 48-volt configurations by adjusting cell count. Key steps include cell testing, spot welding cells together, installing insulation paper, soldering BMS connections, adding a power switch, and final voltage verification. The tutorial emphasizes the importance of using proper tools, understanding cell arrangement, and ensuring secure electrical connections. By providing detailed instructions and material recommendations, the video empowers viewers with the knowledge to build their own custom e-bike battery pack, potentially saving money and gaining a deeper understanding of battery technology.
