diff --git a/Marlin/src/feature/power_monitor.cpp b/Marlin/src/feature/power_monitor.cpp
index 30b19a99e1..cf8ff1139b 100644
--- a/Marlin/src/feature/power_monitor.cpp
+++ b/Marlin/src/feature/power_monitor.cpp
@@ -28,6 +28,7 @@
 
 #include "../lcd/ultralcd.h"
 #include "../lcd/lcdprint.h"
+#include "../libs/numtostr.h"
 
 uint8_t PowerMonitor::flags; // = 0
 
@@ -48,7 +49,7 @@ PowerMonitor power_monitor; // Single instance - this calls the constructor
   #if ENABLED(POWER_MONITOR_CURRENT)
     void PowerMonitor::draw_current() {
       const float amps = getAmps();
-      lcd_put_u8str(amps < 100 ? ftostr21ns(amps) : ui16tostr4((uint16_t)amps));
+      lcd_put_u8str(amps < 100 ? ftostr31ns(amps) : ui16tostr4rj((uint16_t)amps));
       lcd_put_wchar('A');
     }
   #endif
@@ -56,7 +57,7 @@ PowerMonitor power_monitor; // Single instance - this calls the constructor
   #if HAS_POWER_MONITOR_VREF
     void PowerMonitor::draw_voltage() {
       const float volts = getVolts();
-      lcd_put_u8str(volts < 100 ? ftostr21ns(volts) : ui16tostr4((uint16_t)volts));
+      lcd_put_u8str(volts < 100 ? ftostr31ns(volts) : ui16tostr4rj((uint16_t)volts));
       lcd_put_wchar('V');
     }
   #endif
@@ -64,7 +65,7 @@ PowerMonitor power_monitor; // Single instance - this calls the constructor
   #if HAS_POWER_MONITOR_WATTS
     void PowerMonitor::draw_power() {
       const float power = getPower();
-      lcd_put_u8str(power < 100 ? ftostr21ns(power) : ui16tostr4((uint16_t)power));
+      lcd_put_u8str(power < 100 ? ftostr31ns(power) : ui16tostr4rj((uint16_t)power));
       lcd_put_wchar('W');
     }
   #endif
diff --git a/Marlin/src/feature/power_monitor.h b/Marlin/src/feature/power_monitor.h
index fc7a23b8f3..00b45b0f9a 100644
--- a/Marlin/src/feature/power_monitor.h
+++ b/Marlin/src/feature/power_monitor.h
@@ -100,13 +100,13 @@ public:
       static void draw_voltage();
       FORCE_INLINE static bool voltage_display_enabled() { return TEST(flags, PM_DISP_BIT_V); }
       FORCE_INLINE static void set_voltage_display(const bool b) { SET_BIT_TO(flags, PM_DISP_BIT_V, b); }
-      FORCE_INLINE static void toggle_voltage_display() { TBI(flags, PM_DISP_BIT_I); }
+      FORCE_INLINE static void toggle_voltage_display() { TBI(flags, PM_DISP_BIT_V); }
     #endif
     #if HAS_POWER_MONITOR_WATTS
       static void draw_power();
       FORCE_INLINE static bool power_display_enabled() { return TEST(flags, PM_DISP_BIT_P); }
       FORCE_INLINE static void set_power_display(const bool b) { SET_BIT_TO(flags, PM_DISP_BIT_P, b); }
-      FORCE_INLINE static void toggle_power_display() { TBI(flags, PM_DISP_BIT_I); }
+      FORCE_INLINE static void toggle_power_display() { TBI(flags, PM_DISP_BIT_P); }
     #endif
   #endif
 
diff --git a/Marlin/src/gcode/feature/power_monitor/M430.cpp b/Marlin/src/gcode/feature/power_monitor/M430.cpp
index 50bb146c78..356fe67495 100644
--- a/Marlin/src/gcode/feature/power_monitor/M430.cpp
+++ b/Marlin/src/gcode/feature/power_monitor/M430.cpp
@@ -25,7 +25,7 @@
 #if HAS_POWER_MONITOR
 
 #include "../../../feature/power_monitor.h"
-#include "../../../Marlin.h"
+#include "../../../MarlinCore.h"
 #include "../../gcode.h"
 
 /**
diff --git a/Marlin/src/inc/Conditionals_adv.h b/Marlin/src/inc/Conditionals_adv.h
index 41cad412a4..3e5cef9dc3 100644
--- a/Marlin/src/inc/Conditionals_adv.h
+++ b/Marlin/src/inc/Conditionals_adv.h
@@ -356,7 +356,7 @@
 #if EITHER(POWER_MONITOR_CURRENT, POWER_MONITOR_VOLTAGE)
   #define HAS_POWER_MONITOR 1
 #endif
-#if ENABLED(POWER_MONITOR_VOLTAGE) || defined(POWER_MONITOR_FIXED_VOLTAGE)
+#if ENABLED(POWER_MONITOR_VOLTAGE) && defined(POWER_MONITOR_FIXED_VOLTAGE)
   #define HAS_POWER_MONITOR_VREF 1
 #endif
 #if BOTH(HAS_POWER_MONITOR_VREF, POWER_MONITOR_CURRENT)
diff --git a/Marlin/src/lcd/dogm/status_screen_DOGM.cpp b/Marlin/src/lcd/dogm/status_screen_DOGM.cpp
index 8be9b27dda..ae8952ab33 100644
--- a/Marlin/src/lcd/dogm/status_screen_DOGM.cpp
+++ b/Marlin/src/lcd/dogm/status_screen_DOGM.cpp
@@ -113,22 +113,26 @@
 
     lcd_moveto(x, y);
 
+    #if HAS_POWER_MONITOR_WATTS
+      const bool wflag = power_monitor.power_display_enabled();
+    #endif
     #if ENABLED(POWER_MONITOR_CURRENT)
       const bool iflag = power_monitor.current_display_enabled();
     #endif
     #if HAS_POWER_MONITOR_VREF
       const bool vflag = power_monitor.voltage_display_enabled();
     #endif
-    #if HAS_POWER_MONITOR_WATTS
-      const bool wflag = power_monitor.power_display_enabled();
-    #endif
 
-    #if ENABLED(POWER_MONITOR_CURRENT) || HAS_POWER_MONITOR_VREF
-      // cycle between current, voltage, and power
+    #if HAS_POWER_MONITOR_WATTS
+      // Cycle between current, voltage, and power
       if (ELAPSED(millis(), power_monitor.display_item_ms)) {
         power_monitor.display_item_ms = millis() + 1000UL;
         ++power_monitor.display_item;
       }
+    #elif ENABLED(POWER_MONITOR_CURRENT)
+      power_monitor.display_item = 0;
+    #elif HAS_POWER_MONITOR_VREF
+      power_monitor.display_item = 1;
     #endif
 
     // ensure we have the right one selected for display
@@ -139,7 +143,7 @@
       #if HAS_POWER_MONITOR_VREF
         if (power_monitor.display_item == 1 && !vflag) ++power_monitor.display_item;
       #endif
-      #if ENABLED(POWER_MONITOR_CURRENT)
+      #if HAS_POWER_MONITOR_WATTS
         if (power_monitor.display_item == 2 && !wflag) ++power_monitor.display_item;
       #endif
       if (power_monitor.display_item >= 3) power_monitor.display_item = 0;
diff --git a/Marlin/src/lcd/menu/menu_power_monitor.cpp b/Marlin/src/lcd/menu/menu_power_monitor.cpp
index 7055f01c31..3486d54a57 100644
--- a/Marlin/src/lcd/menu/menu_power_monitor.cpp
+++ b/Marlin/src/lcd/menu/menu_power_monitor.cpp
@@ -33,26 +33,26 @@
 
 void menu_power_monitor() {
   START_MENU();
-  MENU_BACK(MSG_MAIN);
+  BACK_ITEM(MSG_MAIN);
 
   #if ENABLED(POWER_MONITOR_CURRENT)
   {
     bool ena = power_monitor.current_display_enabled();
-    MENU_ITEM_EDIT_CALLBACK(bool, MSG_CURRENT, &ena, power_monitor.toggle_current_display);
+    EDIT_ITEM(bool, MSG_CURRENT, &ena, power_monitor.toggle_current_display);
   }
   #endif
 
   #if HAS_POWER_MONITOR_VREF
   {
     bool ena = power_monitor.voltage_display_enabled();
-    MENU_ITEM_EDIT_CALLBACK(bool, MSG_VOLTAGE, &ena, power_monitor.toggle_voltage_display);
+    EDIT_ITEM(bool, MSG_VOLTAGE, &ena, power_monitor.toggle_voltage_display);
   }
   #endif
 
   #if HAS_POWER_MONITOR_WATTS
   {
     bool ena = power_monitor.power_display_enabled();
-    MENU_ITEM_EDIT_CALLBACK(bool, MSG_POWER, &ena, power_monitor.toggle_power_display);
+    EDIT_ITEM(bool, MSG_POWER, &ena, power_monitor.toggle_power_display);
   }
   #endif
 
diff --git a/Marlin/src/module/configuration_store.cpp b/Marlin/src/module/configuration_store.cpp
index 0915c0451a..6c4c13f830 100644
--- a/Marlin/src/module/configuration_store.cpp
+++ b/Marlin/src/module/configuration_store.cpp
@@ -94,7 +94,7 @@
   #include "../feature/powerloss.h"
 #endif
 
-#if ENABLED(POWER_MONITOR)
+#if HAS_POWER_MONITOR
   #include "../feature/power_monitor.h"
 #endif
 
diff --git a/buildroot/tests/mega1280-tests b/buildroot/tests/mega1280-tests
index c9caf7d852..6bd9cda605 100644
--- a/buildroot/tests/mega1280-tests
+++ b/buildroot/tests/mega1280-tests
@@ -18,13 +18,16 @@ set -e
 restore_configs
 opt_set LCD_LANGUAGE an
 opt_enable SPINDLE_FEATURE ULTIMAKERCONTROLLER LCD_BED_LEVELING \
+           EEPROM_SETTINGS EEPROM_BOOT_SILENT EEPROM_AUTO_INIT \
            SENSORLESS_BACKOFF_MM HOMING_BACKOFF_POST_MM HOME_Y_BEFORE_X CODEPENDENT_XY_HOMING \
            MESH_BED_LEVELING ENABLE_LEVELING_FADE_HEIGHT MESH_G28_REST_ORIGIN \
            G26_MESH_VALIDATION MESH_EDIT_MENU GCODE_QUOTED_STRINGS \
-           EXTERNAL_CLOSED_LOOP_CONTROLLER
+           EXTERNAL_CLOSED_LOOP_CONTROLLER POWER_MONITOR_CURRENT POWER_MONITOR_VOLTAGE
+opt_set POWER_MONITOR_CURRENT_PIN 14
+opt_set POWER_MONITOR_VOLTAGE_PIN 15
 opt_set CLOSED_LOOP_ENABLE_PIN 44
 opt_set CLOSED_LOOP_MOVE_COMPLETE_PIN 45
-exec_test $1 $2 "Spindle, MESH_BED_LEVELING, closed loop, and LCD"
+exec_test $1 $2 "Spindle, MESH_BED_LEVELING, closed loop, Power Monitor, and LCD"
 
 #
 # Test DUAL_X_CARRIAGE