Originally Posted by Fred Marks
The knob was set for 0.5 amps and it was observed that the charger selected 4S. I watched for some three minutes then reset to 3 amps. The pack was being charged in our fireplace. Just as I turned to walk back to my shop, the charger jumped cell count so I was fortunate enough to catch it before it could ruin an 8-cell pack. This was all certainly unexpected.
Had the charger entered Mode 2? You don't specifically say that. The cell count is supposed to be frozen in Mode 2. If that is the case it puts a different light on things.