February 25, 2026
Description
DIY 21700 Battery Pack for Parkside 20V Tools
This project is a fully custom 21700 Li-ion battery pack designed to be compatible with Parkside 20V tools.
The pack is built from scratch using 21700 cells and a custom 3D-printed enclosure, while reusing the original Parkside BMS from a 2Ah battery.
The goal of this design is to provide a robust DIY alternative battery with higher capacity and improved current capability compared to the original pack.
This model is intended for experienced makers familiar with Li-ion battery safety and assembly.
License:
Standard Digital File License
NorthWorks Lab
