I'm using a Tenergy 5-in-1 Cell Meter to check a new Spektrum 3S-1100-30C battery. As soon as I plug the battery in, it starts beeping - I have the alarm set to "Off". Cell voltages are 3.87, 3.88, and 3.90. I have 2 other identical batteries that do not do this. Could this be indicating I have a bad battery? Manual says nothing, and can't find any reference to this on the 'net. Anyone have an answer?