If your Voltwatch (or clone of it) is dropping into the red when you cycle the sticks with a fully charged battery, you DO have a potential problem, not just a MAYBE. That means that for a few microseconds or more, the voltage at the point the Voltwatch is plugged into fell to a low value. If you are using a 2.4GHz system, this may be putting you in danger of a brown out condition. There can be several reasons for this, some of which are: Switch with high impedance contacts caused by wear, corrosion or contact size: a battery with a high internal impedance due to under capacity, age or ???; to small a gage wire between the battery and receiver or a defect causing a loss in cross sectional area of the wire somewhere along it's length; a binding servo; a servo being stalled at extreme position. If you are dropping into the red zone, I'd sure recommend that you find the cause if you value your plane. Properly used and evaluated, the Voltwatch is an excellent trouble shooting tool.