I had to balance my brother-in-laws lipos and one cell on each was very unbalanced. It was a solid red light for at least an hour on one and almost 3 on the other. I jsut left them alone and it eventually started to blink, then flash quickly. When the cells balanced it just shut off. I re-read the instructions and it said that it's ok to leave them plugged in all night. I have a LBA6.

While it was discharging I put it in an ammo box with a ziplock bag of dirt on top, just in case. If it does blow it just melts the bag and then the dirt smothers the flames.