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Charging li-ion batteries that went below 2.0v

Charging li-ion batteries that went below 2.0v

(OP)
Hello,

Well not knowing about the hazards of this action, I charged some Panasonic 18650 3.7v batteries.

They were 1.9v each before the charge.
Its been 4-5 days since I charged them, they are not fully charged, around 3.9-3.8v.

Yesterday Ive read that they may short-circuit because of some non reversible breakdown of the materials inside.

I put them in a safe place for now.

But what should I do?
1. Panic and throw them away immediately ?
2. Discharge them in a controlled environment and throw them away?
3. Dont worry about them and use them, because if something was about to go wrong it would already happned.

Thank you.

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