diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CUAVv5Nano/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/CUAVv5Nano/hwdef.dat
index e1e1c3e25d..93bf786d3e 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CUAVv5Nano/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CUAVv5Nano/hwdef.dat
@@ -46,9 +46,9 @@ PI5 TIM8_CH1 TIM8 RCININT PULLUP LOW
 
 # setup for supplied power brick
 undef HAL_BATT_VOLT_SCALE
-define HAL_BATT_VOLT_SCALE 18.182
+define HAL_BATT_VOLT_SCALE 18.000
 undef HAL_BATT_CURR_SCALE
-define HAL_BATT_CURR_SCALE 36.364
+define HAL_BATT_CURR_SCALE 24.000
 
 # setup safety switch
 PE12 LED_SAFETY OUTPUT