How to Revive a dead Lithium Battery?

My Lithium battery keeps dying on me and I have a simple way how to revive it. All you need are two wires, a battery from your powertool and a multimeter.
The reason for the battery loosing its charge is a question i still have because for some reason the charger seems to be the reason. If you have any idea why this happens, please let me know in the comments.
DISCLAIMER: THIS METHOD IS AT YOUR OWN RISK.
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