Hi, just got my first mod built but when connecting the battery the mod says "Check battery". The battery life shows 4%. When connecting to escribe and going to device monitor the total voltage shows 12,7 V, cell 1-4 show 3,8V; 3,8V; 1,3V and 3,8V. So cell 3 seems to be the cause. The battery is brand new so I thought that maybe some of my connection is off, but after checking them I can't find any that would cause this. Also I don't have a separate lipo charger so I could charge the battery and the mod doesn't beging charging when I plug it to a USB-charger.
Any ideas how to fix this?