How to Calibrate
1
Fly a battery pack until you're comfortable its capacity has been used (aim for ~80% of rated mAh).
2
After landing, note the mAh consumed shown in the Betaflight OSD or Configurator.
3
Recharge the battery and record the mAh charged shown by your charger.
4
Connect to Betaflight and find the Current Scale in the Power & Battery tab.
5
Enter all three values below to calculate your new scale. Apply it in Betaflight.
6
Repeat 2–3 times for best accuracy. Each iteration gets you closer to a perfect calibration.
Reading Error
0% (Perfect)
50%+ (Very off)
Formula: New Scale = Old Scale × (Charger mAh ÷ Betaflight mAh)
Why calibrate? Current sensors vary significantly between flight controllers and ESCs. Factory defaults are often inaccurate. An uncalibrated sensor can show 850 mAh when you've actually used 1050 mAh — meaning you're over-discharging batteries without knowing it.
Pro tip: After applying the new scale, fly another pack and repeat. Each iteration narrows the error. After 2–3 rounds, you'll typically be within 2–3% accuracy.
How to Calibrate Voltage
1
Plug a battery into your quad and power it up.
2
Connect to Betaflight Configurator and go to the Power & Battery tab.
3
Measure the actual battery voltage with a multimeter or LiPo checker (while the battery is still plugged into the quad).
4
Note the voltage reading shown in Betaflight Configurator and the current Voltage Scale.
5
Enter all values below and apply the new scale to Betaflight.
Formula: New Scale = Old Scale × (Actual Voltage ÷ Betaflight Voltage)
Note: Unlike current calibration, voltage calibration only needs to be done once per flight controller. Measure voltage while the battery is connected to the quad — unplugged voltage will differ due to voltage sag/rise.