voltage discrepancy

[rodg98133]

I have a problem where when I fully charge my 3s it says 12.6v on my charger but as soon as I put it on my quad my aurora 9 tells me the voltage is 12.3 straight away.

Is this something to do with the way my telemetry detects the voltage or is this normal voltage drop with no motors running etc. Just the naza and rx. Or is my charger not fully charging?

Even when testing with one of them battery alarms it says 12.5 instantly after taking off charge.

[Friskle]

Obviously you have to take into account voltage drop as soon as you connect up, and as soon as you start up, you will always see a definate drop, thats simply the norm, as its then underload.

[Paul01]

It could also be your charger is off, check the battery with a multimeter after a charge and see what that says, if it says 12.6v then, as Friskle says its the voltage dropping under load. If the multimeter says lower than 12.6v then you need to read the manual for your charger and see if it has a calibrate mode.