Set battery voltage low level %XVBATLOWLVL

Supported in modem firmware v1.2.0 and later.

The %XVBATLOWLVL command sets the battery voltage low level for a modem. If notifications of battery voltage low level have been subscribed, the modem sends clients a notification when the measured battery voltage is below the defined level.

The notifications are subscribed using the %XVBATLVL command.