diff --git a/platform/targets/DM-1801/hwconfig.h b/platform/targets/DM-1801/hwconfig.h
index aea63ff8..d497e687 100644
--- a/platform/targets/DM-1801/hwconfig.h
+++ b/platform/targets/DM-1801/hwconfig.h
@@ -46,6 +46,9 @@
 /* Battery type */
 #define BAT_LIPO_2S
 
+/* Power keep switch */
+#define PWR_SW GPIOE,26
+
 /* Display */
 #define LCD_BKLIGHT GPIOC,4
 #define LCD_CS      GPIOC,8
diff --git a/platform/targets/DM-1801/platform.c b/platform/targets/DM-1801/platform.c
index 3c64ad28..7360477f 100644
--- a/platform/targets/DM-1801/platform.c
+++ b/platform/targets/DM-1801/platform.c
@@ -46,6 +46,8 @@ void platform_init()
 
     gpio_setMode(PTT_SW, INPUT);
 
+    gpio_setMode(PWR_SW, OUTPUT);
+
     /*
      * Configure backlight PWM: 58.5kHz, 8 bit resolution
      */
@@ -102,6 +104,9 @@ void platform_terminate()
     gpio_clearPin(GREEN_LED);
 
     adc0_terminate();
+
+    /* Finally, remove power supply */
+    gpio_clearPin(PWR_SW, OUTPUT);
 }
 
 float platform_getVbat()
diff --git a/platform/targets/GD-77/hwconfig.h b/platform/targets/GD-77/hwconfig.h
index 86b54446..1bf3689e 100644
--- a/platform/targets/GD-77/hwconfig.h
+++ b/platform/targets/GD-77/hwconfig.h
@@ -46,6 +46,9 @@
 /* Battery type */
 #define BAT_LIPO_2S
 
+/* Power keep switch */
+#define PWR_SW GPIOE,26
+
 /* Display */
 #define LCD_BKLIGHT GPIOC,4
 #define LCD_CS      GPIOC,8
diff --git a/platform/targets/GD-77/platform.c b/platform/targets/GD-77/platform.c
index ee05e938..39b80aa0 100644
--- a/platform/targets/GD-77/platform.c
+++ b/platform/targets/GD-77/platform.c
@@ -46,6 +46,8 @@ void platform_init()
 
     gpio_setMode(PTT_SW, INPUT);
 
+    gpio_setMode(PWR_SW, OUTPUT);
+
     /*
      * Configure backlight PWM: 58.5kHz, 8 bit resolution
      */
@@ -102,6 +104,9 @@ void platform_terminate()
     gpio_clearPin(GREEN_LED);
 
     adc0_terminate();
+
+    /* Finally, remove power supply */
+    gpio_clearPin(PWR_SW, OUTPUT);
 }
 
 float platform_getVbat()
diff --git a/platform/targets/MD-3x0/hwconfig.h b/platform/targets/MD-3x0/hwconfig.h
index 3b0e8b76..2e8869cb 100644
--- a/platform/targets/MD-3x0/hwconfig.h
+++ b/platform/targets/MD-3x0/hwconfig.h
@@ -51,6 +51,9 @@
 /* Battery type */
 #define BAT_LIPO_2S
 
+/* Power keep switch */
+#define PWR_SW GPIOA,7
+
 /* Display */
 #define LCD_D0  GPIOD,14
 #define LCD_D1  GPIOD,15
diff --git a/platform/targets/MD-3x0/platform.c b/platform/targets/MD-3x0/platform.c
index c5169aa7..648eeafc 100644
--- a/platform/targets/MD-3x0/platform.c
+++ b/platform/targets/MD-3x0/platform.c
@@ -46,6 +46,8 @@ void platform_init()
 
     gpio_setMode(PTT_SW, INPUT);
 
+    gpio_setMode(PWR_SW, OUTPUT);
+
     /*
      * Initialise ADC1, for vbat, RSSI, ...
      * Configuration of corresponding GPIOs in analog input mode is done inside
@@ -104,6 +106,9 @@ void platform_terminate()
     nvm_terminate();
     toneGen_terminate();
     rtc_terminate();
+
+    /* Finally, remove power supply */
+    gpio_clearPin(PWR_SW, OUTPUT);
 }
 
 float platform_getVbat()
diff --git a/platform/targets/MD-UV380/hwconfig.h b/platform/targets/MD-UV380/hwconfig.h
index 2f4bb3b2..a31d10fb 100644
--- a/platform/targets/MD-UV380/hwconfig.h
+++ b/platform/targets/MD-UV380/hwconfig.h
@@ -48,6 +48,9 @@
 /* Battery type */
 #define BAT_LIPO_2S
 
+/* Power keep switch */
+#define PWR_SW GPIOA,7
+
 /* Display */
 #define LCD_D0  GPIOD,14
 #define LCD_D1  GPIOD,15
diff --git a/platform/targets/MD-UV380/platform.c b/platform/targets/MD-UV380/platform.c
index e10126b2..400de43c 100644
--- a/platform/targets/MD-UV380/platform.c
+++ b/platform/targets/MD-UV380/platform.c
@@ -65,6 +65,8 @@ void platform_init()
 
     gpio_setMode(PTT_SW, INPUT);
 
+    gpio_setMode(PWR_SW, OUTPUT);
+
     /*
      * Initialise ADC1, for vbat, RSSI, ...
      * Configuration of corresponding GPIOs in analog input mode is done inside
@@ -128,6 +130,9 @@ void platform_terminate()
     adc1_terminate();
     nvm_terminate();
     rtc_terminate();
+
+    /* Finally, remove power supply */
+    gpio_clearPin(PWR_SW, OUTPUT);
 }
 
 float platform_getVbat()