Sunday, February 23, 2014

Deactivated 18650 battery

One day I found that one of my 18650 failed.

I tried to use apply a 9V across to wake it up but failed, I tried to put it in charger but it shows full charge.

The last resort is to remove the protection PCB which is extremely easy like below:

And it works again afterward, and I'll buy a small mobile charger with protection circuit and place it inside to extend its life.