Currently (v0.70) WMNut only supports a few device status values, namely OL, OB, LB, OVER(loaded):

• wmnut/src/wmnut.h

  Lines 78 to 85 in e3255f7

  	/* UPS status definition */
  	#define UPS_DEFAULT 0
  	#define UPS_LOWBATT 1
  	#define UPS_ONBATT 2
  	#define UPS_ONLINE 3
  	#define UPS_OVERLOAD 4

• wmnut/src/wmnut.c

  Lines 130 to 151 in e3255f7

  	void get_ups_info(void)
  	{
  	char value[SMALLBUF];
  	int retVal;
  	/* Get UPS status */
  	if (get_ups_var ("ups.status", value) > NOK) {
  	if (!strncmp(value, "OL", 2))
  	CurHost->ups_status = UPS_ONLINE;
  	else if (!strncmp(value, "OB", 2))
  	CurHost->ups_status = UPS_ONBATT;
  	else if (!strstr(value, "LB"))
  	CurHost->ups_status = UPS_LOWBATT;
  	else if (!strncmp(value, "OVER", 4))
  	CurHost->ups_status = UPS_OVERLOAD;
  	else
  	CurHost->ups_status = UPS_DEFAULT;
  	}
  	else
  	CurHost->ups_status = UPS_DEFAULT;

• wmnut/src/wmnut.c

  Lines 344 to 435 in e3255f7

  	/* Check UPS status */
  	switch (CurHost->ups_status) {
  	/* case UPS_LOWBATT: */
  	case UPS_ONBATT:
  	{
  	if (CurHost->battery_percentage <= CriticalLevel)
  	{
  	/* Battery Status: Critical.
  	* Blink red battery [TODO : and digital %age] on/off...
  	*/
  	if (Toggle||(BlinkRate == 0.0)) {
  	/*
  	if (Beep)
  	XBell(display, Volume);
  	*/
  	/* Toggle = OFF; */
  	copyXPMArea(99, 20, 12, 7, 30, 50);
  	}
  	else{
  	/* Toggle = ON; */
  	copyXPMArea(83, 20, 12, 7, 30, 50);
  	}
  	}
  	else if (CurHost->battery_percentage <= LowLevel) {
  	/*
  	* Battery Status: Low.
  	* Blink the yellow battery [TODO : and digital %age] on/off...
  	*/
  	if (Toggle||(BlinkRate == 0.0)) {
  	/*
  	if (Beep)
  	XBell(display, Volume);
  	*/
  	/* Toggle = OFF; */
  	copyXPMArea(99, 20, 12, 7, 30, 50);
  	}
  	else{
  	/* Toggle = ON; */
  	copyXPMArea(69, 20, 12, 7, 30, 50);
  	}
  	}
  	else {
  	/*
  	* Battery Status: High but charging.
  	* Blink the green battery [TODO : and digital %age] on/off...
  	*/
  	if (Toggle||(BlinkRate == 0.0)) {
  	/*
  	if (Beep)
  	XBell(display, Volume);
  	*/
  	copyXPMArea(99, 20, 12, 7, 30, 50);
  	}
  	else
  	copyXPMArea(83, 6, 12, 7, 30, 50);
  	}
  	}
  	break;
  	case UPS_OVERLOAD:
  	{
  	/*
  	* UPS is overloaded.
  	* [TODO : Blink the battery load %age on/off...]
  	*/
  	/* Hide digits and '%' */
  	copyXPMArea(37, 34, 19, 7,37, 34);
  	}
  	break;
  	case UPS_ONLINE:
  	{
  	/*
  	* UPS on-line. I.e. we are "plugged-in".
  	*/
  	copyXPMArea(68, 6, 12, 7, 30, 50);
  	}
  	break;
  	case UPS_DEFAULT:
  	{
  	/*
  	* used to "erase" UPS status when COM_LOST.
  	*/
  	copyXPMArea(99, 20, 12, 7, 30, 50);
  	}
  	break;
  	default:
  	break;
  	}

Recent years of evolution on NUT side added many more values, see https://github.com/networkupstools/nut/blob/master/clients/status.h and https://github.com/networkupstools/nut/blob/master/clients/upsmon.h -- such as "administrative OFF", "administrative bypass", "calibration", "trim/boost", and recently "ECO mode" in networkupstools/nut#2637 - would be nice to reflect those in the widget.