diff --git a/libraries/AP_HAL_ChibiOS/hwdef/PH4-mini/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/PH4-mini/hwdef.dat
index 7bfacfb91b..2cb71d460b 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/PH4-mini/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/PH4-mini/hwdef.dat
@@ -31,3 +31,9 @@ PB11 TIM2_CH4 TIM2 PWM(11) GPIO(60)
 
 # RCInput on the PPM pin, for all protocols
 PI5 TIM8_CH1 TIM8 RCININT PULLUP LOW
+
+# setup for supplied power brick
+undef HAL_BATT_VOLT_SCALE
+define HAL_BATT_VOLT_SCALE 18.182
+undef HAL_BATT_CURR_SCALE
+define HAL_BATT_CURR_SCALE 36.364
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/Pixhawk4/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/Pixhawk4/hwdef.dat
index e273b7fdc5..910bcac2fe 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/Pixhawk4/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/Pixhawk4/hwdef.dat
@@ -3,3 +3,9 @@
 
 include ../fmuv5/hwdef.dat
 
+# setup for supplied power brick
+undef HAL_BATT_VOLT_SCALE
+define HAL_BATT_VOLT_SCALE 18.182
+undef HAL_BATT_CURR_SCALE
+define HAL_BATT_CURR_SCALE 36.364
+