Old 18650 Of 2008
Hi, I was given some unprotected 18650 with date code 2008.
I am told they are not charged for 1 to 2 years time.
I measured their voltages to be around 2.4V to 2.7V.
I charged them up to 4.2V with WF-137 and I found that they are all working fine.
I put them into Ultrafire 501B T6 and tail cap current measurement is about 2A.
Although they are working fine, I am worried as they were discharged way below.
Am I risking myself using these cells? What can I do to check their condition?
Thanks in advance for sharing knowledges.