I recently updated my duo touch charger software to V2.8. It is now over charging my batteries. The cells are coming off a 4.28-4.33v. It even puffed one of my newer batteries. I have confirmed that the end voltage is 4.20 and that I am not charging in HVLipo mode.
Try dropping the end voltage cutoff to 4.10 and charge and see if that helps. If it does, you can re-adjust from there to get the desired cutoff you want. Charger may have lost it's calibration. Worth a try. :nod:
