diff --git a/.settings/language.settings.xml b/.settings/language.settings.xml
index c335b92..acf778e 100644
--- a/.settings/language.settings.xml
+++ b/.settings/language.settings.xml
@@ -5,7 +5,7 @@
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider copy-of="extension" id="org.eclipse.cdt.managedbuilder.core.GCCBuildCommandParser"/>
-			<provider class="org.eclipse.cdt.internal.build.crossgcc.CrossGCCBuiltinSpecsDetector" console="false" env-hash="-1672673687719504" id="org.eclipse.cdt.build.crossgcc.CrossGCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="org.eclipse.cdt.internal.build.crossgcc.CrossGCCBuiltinSpecsDetector" console="false" env-hash="-914012201054471" id="org.eclipse.cdt.build.crossgcc.CrossGCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>
@@ -17,7 +17,7 @@
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider copy-of="extension" id="org.eclipse.cdt.managedbuilder.core.GCCBuildCommandParser"/>
-			<provider class="org.eclipse.cdt.internal.build.crossgcc.CrossGCCBuiltinSpecsDetector" console="false" env-hash="-1672673687719504" id="org.eclipse.cdt.build.crossgcc.CrossGCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="org.eclipse.cdt.internal.build.crossgcc.CrossGCCBuiltinSpecsDetector" console="false" env-hash="-914012201054471" id="org.eclipse.cdt.build.crossgcc.CrossGCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>
diff --git a/plot.c b/plot.c
index c8f60a8..8b35bb5 100644
--- a/plot.c
+++ b/plot.c
@@ -1770,7 +1770,7 @@ draw_frequencies(void)
 #define BATTERY_TOP_LEVEL       4200
 #define BATTERY_BOTTOM_LEVEL    3300
 #define BATTERY_WARNING_LEVEL   3300
-#define BATTERY_MID_LEVEL       3600
+#define BATTERY_MID_LEVEL       3900
 
 static void draw_battery_status(void)
 {
diff --git a/sa_core.c b/sa_core.c
index aa7407c..197da95 100644
--- a/sa_core.c
+++ b/sa_core.c
@@ -1073,7 +1073,9 @@ void toggle_normalize(int t)
 extern float peakLevel;
 void set_actual_power(float o)              // Set peak level to known value
 {
-  float new_offset = o - peakLevel + get_level_offset();        //  offset based on difference between measured peak level and known peak level
+  if (!markers[0].index)
+    return;
+  float new_offset = o -   measured[markers[0].trace][markers[0].index] + get_level_offset();        //  offset based on difference between measured peak level and known peak level
   if (o == 100) new_offset = 0;
   if (setting.mode == M_HIGH) {
     config.high_level_offset = new_offset;