diff --git a/variants/rak11200/RAK11200Board.cpp b/variants/rak11200/RAK11200Board.cpp
index ef07ce92c..602ce96cb 100644
--- a/variants/rak11200/RAK11200Board.cpp
+++ b/variants/rak11200/RAK11200Board.cpp
@@ -28,7 +28,7 @@ uint16_t RAK11200Board::getBattMilliVolts() {
   }
   raw = raw / BATTERY_SAMPLES;
 
-  return (ADC_MULTIPLIER * raw * 1000) / 4096;
+  return (ADC_MULTIPLIER * raw) / 4096;
 }
 
 const char* RAK11200Board::getManufacturerName() const {
diff --git a/variants/rak11200/RAK11200Board.h b/variants/rak11200/RAK11200Board.h
index 8cf3c42f9..0c93d611c 100644
--- a/variants/rak11200/RAK11200Board.h
+++ b/variants/rak11200/RAK11200Board.h
@@ -13,7 +13,7 @@
 #define  P_LORA_MOSI    25    // GPIO25 (ESP32 pin 10 -> SPI_MOSI)
 #define  SX126X_POWER_EN  27    // GPIO27 (ESP32 pin 12 -> IO2)
 #define  PIN_VBAT_READ    36    // WB_A0 for battery reading
-#define  ADC_MULTIPLIER   1.8  // Adjusted for ESP32 ADC and voltage divider
+#define  ADC_MULTIPLIER   (3 * 1.73 * 1.110 * 1000)
 
 class RAK11200Board : public ESP32Board {