Battery quuestion - 18650 - Low voltage, won't charge

[Corncob]

I have a Trustfire 18650 3.7v 2400mah battery that I was using to check some older atties to see if they were dead. After a few minutes, the battery cut off, and the voltage on it is now 2.36v. Prior to this it was holding a charge well enough to chain vape for 2 days. (Maybe a shorted atty drained it?)

Now it won't charge on my Trustfire TR-001 multicharger - all green lights, doesn't change to red. It still charges other batteries.

I know the low voltage is bad for the battery... is it not charging because the voltage is too low and the charger doesn't see it as a 3.7v battery? If so, is there a way to get it to the charger's minimum so it is chargeable again?

Apparently the battery was supposed to cutoff before it became nonchargeable...

Thanks!

 

[Kurt]

It sounds like the battery is dead. If you have been vaping with low resistance a lot, its possible the battery material near the terminal has become non-rechargeable. High drain can do this. Unless you can charge it in a different charger, I would say its time to get a new 18650.