Notebook Batteries don’t balance

TL;DR: Don’t trust the vendors. They only monitor the cells, they don’t balance them. Introduction It’s a less known fact that most notebooks don’t balance their cells. Maybe some do, but I haven’t found them yet. So I added an active balancer   Buy it here: https://www.aliexpress.com/item/4000228067138.html What is this? This is not a regular