Flyingmedic,
Does it do that with both batteries or just the one with the low volts. If it only does it with the one with the 14.1 volts the charger will sometimes not charge it as it has gone below the 3.6 volts per cell (14.4) and will need to be charged up on a non standard charger. This has happened with two out of my 6 std chargers when I have checked them over the past 12 hrs with a dead battery and a good battery. That is the only answer that I can come up with 2 out of the 6 would not try to charge the dead one but the other four would.. I will post a photo of my charging set up, it cost a bit but I can do 4 batteries at once or four of my controller batteries at once also, then you can do four individual types at once also. I purchased it 1 month after I purchased my first H and realized that the BATTERIES are the LIFE BLOOD of your MACHINE, ALONG with your PROPELLERS. JohnnoHennessy.