Hello from Puerto Rico

I found this place looking for an answer to a question about 18650 batteries. I have 9 CGR18650EA cells that were soldered together. When I removed the first side, they were all at 2.5-2.6V. When I removed them from the second side, 2 of them measured 0V. Could it be that I did not take much care in removing the tabs? What really happened? Is there any way to make them come back to life? :huh: Thanks in advance.

Welcome

No way to tell what you did do. How do they look? Picture of them? Soldered tabs or spot welded? Where they working before?

If it were 2 cells connected in parallel as a pair, then it is for sure the case thatthe cell with 0vhas a popped CID.
As long they are in parallel, you will messure the voltage from the good cell.

Bin the bad cell, do not try to reset the cid, there is a reason it has popped....

You gotta thank CIDs for not killing the others cells as well.