Translations:KAVAN V20 + ETHOS™ - User manual/135/en
The warning message "Radio battery is low" is displayed when the Main Battery Check is active in the System / Alerts menu and the voltage of the transmitter battery is below the set threshold.
Caution: If this warning appears, we recommend that you terminate the flight immediately and charge the transmitter battery! If the voltage of the transmitter battery drops to 6.0 V, the transmitter will switch OFF without further warning to protect the transmitter battery (2S LiPo - 2×3.0 V) and you will not be able to operate the model!