RE: CX2 Lipo question?
The only way to really know what is truly in a battery for true mah capacity is to do a bench test and take a battery off the charger that claims a full charge and do a draw test with a meter and discharge it until the battery nears no lower than 3 volts per cell. Then the meter will show you how mah was used during discharge till drained at 3 volts per cell and then you will know the true mah capacity of that battery and some batteries are slightly higher and some lower than the claimed batteries mah rating.
Good point BZinfinity!