Broken etc rechargeable batteries (N1E 5V3)

Looking to make a rechargeable solar power bank the supplement my energy consumption but as a person on the fixed income one of the greatest limiting factors is the battery bank that I can afford. So any batteries, rechargeable that is, be they for power tools or for disposable vape pens, and even if they don't seem to hold the charge at all anymore, I have the experience and know how I do at least to go through them and make the most use of whatever I can from those. Literally any batteries could help this project 🙂