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Voltage and amps


procharger

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Voltage is read from bus to ground, and it should be over 13.2 volts to less than 14.3. Heavy loads will lower the voltage because of the voltage drop effect.

 

Amperage is read on the positive battery lead in most aircraft installs, between the bus and the battery terminal. In flight, you want the amperage to be zero or positive. Positive means it is charging, negative means it is draining. On the ground, don't be surprised if there is a slow drain since you don't have a high enough RPM to charge.

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Voltage rad out on most CT's are around 13.6 to 13.9 on the average. The ammeter can bounce between -4 to 12 amps. This is because of the Rotax engine and the Dynon interface. Dynon hasn't figured out yet how to take the noise out of the electrical system. You are really on looking for trends. It should never be always positive or always negative. Normal for most seem to bounce between -2 to + 5.

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