What you need to know to salvage 18650 Li-Ion Batteries from Lap Top Battery Packs

Harvesting them and reclaiming them for other applications is both easy and rewarding. While some batteries will undoubtedly be defective, most are still usable if properly charged and repackaged. This video reviews how to reclaim them with a minimum safety hazard, test for defective cells, and safely recharge them to full working voltage even if they were below normal low voltage cutoff

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how to deal with over charged battery I.E 4.4 v do we need to discharge bit or some thing to make them in use again ?

[Austra]

Used An hammer to break the seal round the laptop

-drill is overkill -