This method will help you restore or resurrect Li-ion batteries that don't produce current, have very low voltage, or experience voltage and current sag when a load is applied.
3.7V ICR 18650 battery - https://alli.pub/6vdwxq?erid=2SDnjeTynvk
I'll say right away that before you decide to throw away the battery, you should still try my method. The restoration process itself won't take more than 3 minutes if you have solder nippers, flux, and a hot soldering iron!
And once again, it's important to remember that if the battery is faulty, it has irreversible processes that are already critical. This method could help, say, on a desert island or in the event of an apocalypse. However, using it unsupervised in everyday life can be dangerous. Therefore, I'm sharing this method for restoring lithium batteries for informational purposes only. I don't use such solutions myself. I buy new batteries. They're much safer and more reliable.
Article - https://peling.ru/2015/01/10/prostoe-...