diff --git a/conf/airframes/ladybug.xml b/conf/airframes/ladybug.xml
index c2b173d06e..3b996d71a4 100755
--- a/conf/airframes/ladybug.xml
+++ b/conf/airframes/ladybug.xml
@@ -54,8 +54,8 @@
   </section>
   <section name="BAT" channel="3">
     <define name="MILLIAMP_PER_PERCENT" value="1."/>
-    <define name="VOLTAGE_ADC_A" value="0.012932"/>
-    <define name="VOLTAGE_ADC_B" value="0.073729"/>
+    <define name="VOLTAGE_ADC_A" value="0.01753"/>
+    <define name="VOLTAGE_ADC_B" value="0.214462"/>
     <define name="VoltageOfAdc(adc)" value="(VOLTAGE_ADC_A * adc + VOLTAGE_ADC_B)"/>
     <define name="LOW_BATTERY" value="90" unit="1e-1V"/>
   </section>