diff --git a/variants/nano_g2_ultra/nano-g2.h b/variants/nano_g2_ultra/nano-g2.h
index 884ed7f8..69df0c65 100644
--- a/variants/nano_g2_ultra/nano-g2.h
+++ b/variants/nano_g2_ultra/nano-g2.h
@@ -1,39 +1,40 @@
 #pragma once
 
-#include <MeshCore.h>
+#include "variant.h"
+
 #include <Arduino.h>
+#include <MeshCore.h>
 
 // LoRa radio module pins
-#define P_LORA_DIO_1 (32 + 10)
-#define P_LORA_NSS (32 + 13)
-#define P_LORA_RESET (32 + 15)
-#define P_LORA_BUSY (32 + 11)
-#define P_LORA_SCLK (0 + 12)
-#define P_LORA_MISO (32 + 9)
-#define P_LORA_MOSI (0 + 11)
+#define P_LORA_DIO_1             (32 + 10)
+#define P_LORA_NSS               (32 + 13)
+#define P_LORA_RESET             (32 + 15)
+#define P_LORA_BUSY              (32 + 11)
+#define P_LORA_SCLK              (0 + 12)
+#define P_LORA_MISO              (32 + 9)
+#define P_LORA_MOSI              (0 + 11)
 
 #define SX126X_DIO2_AS_RF_SWITCH true
 #define SX126X_DIO3_TCXO_VOLTAGE 1.8
-#define SX126X_POWER_EN 37
+#define SX126X_POWER_EN          37
 
 // buttons
-#define PIN_BUTTON1 (32 + 6)
-#define BUTTON_PIN PIN_BUTTON1
-#define PIN_USER_BTN BUTTON_PIN
+#define PIN_BUTTON1              (32 + 6)
+#define BUTTON_PIN               PIN_BUTTON1
+#define PIN_USER_BTN             BUTTON_PIN
 
 // GPS
-#define GPS_EN PIN_GPS_STANDBY
+#define GPS_EN                   PIN_GPS_STANDBY
 // built-ins
-#define VBAT_MV_PER_LSB (0.73242188F) // 3.0V ADC range and 12-bit ADC resolution = 3000mV/4096
+#define VBAT_MV_PER_LSB          (0.73242188F) // 3.0V ADC range and 12-bit ADC resolution = 3000mV/4096
 
-#define VBAT_DIVIDER (0.5F)      // 150K + 150K voltage divider on VBAT, actually 100K + 100K
-#define VBAT_DIVIDER_COMP (2.0F) // Compensation factor for the VBAT divider
+#define VBAT_DIVIDER             (0.5F) // 150K + 150K voltage divider on VBAT, actually 100K + 100K
+#define VBAT_DIVIDER_COMP        (2.0F) // Compensation factor for the VBAT divider
 
-#define PIN_VBAT_READ (0 + 2)
-#define REAL_VBAT_MV_PER_LSB (VBAT_DIVIDER_COMP * VBAT_MV_PER_LSB)
+#define PIN_VBAT_READ            (0 + 2)
+#define REAL_VBAT_MV_PER_LSB     (VBAT_DIVIDER_COMP * VBAT_MV_PER_LSB)
 
-class NanoG2Ultra : public mesh::MainBoard
-{
+class NanoG2Ultra : public mesh::MainBoard {
 protected:
   uint8_t startup_reason;
 
@@ -42,18 +43,21 @@ public:
   uint16_t getBattMilliVolts() override;
   bool startOTAUpdate(const char *id, char reply[]) override;
 
-  uint8_t getStartupReason() const override
-  {
-    return startup_reason;
-  }
+  uint8_t getStartupReason() const override { return startup_reason; }
 
-  const char *getManufacturerName() const override
-  {
-    return "Nano G2 Ultra";
-  }
+  const char *getManufacturerName() const override { return "Nano G2 Ultra"; }
 
-  void reboot() override
-  {
-    NVIC_SystemReset();
+  void reboot() override { NVIC_SystemReset(); }
+
+  void powerOff() override {
+    // put GPS chip to sleep
+    digitalWrite(PIN_GPS_STANDBY, LOW);
+// unset buzzer to prevent notification circuit activating on hibernate
+#undef PIN_BUZZER
+
+    nrf_gpio_cfg_sense_input(digitalPinToInterrupt(PIN_USER_BTN), NRF_GPIO_PIN_NOPULL,
+                             NRF_GPIO_PIN_SENSE_LOW);
+
+    sd_power_system_off();
   }
 };