diff --git a/include/mess_Ub_old.h b/include/mess_Ub_old.h
index cde38f9..3e34e03 100644
--- a/include/mess_Ub_old.h
+++ b/include/mess_Ub_old.h
@@ -2,7 +2,7 @@
 
 float MinimalSpannung = MinimalSpannungAkku;
 
-float korectur = 0.8870;
+float korectur = 0.987572260573;
 char floatString[15] = {0};
 float AKKU;
 
@@ -18,6 +18,7 @@ float getBattery(float kor = 1.000)
 						// r1 = 270k, r2 = 100k
 						// Spannungsbereich = 5.2 Volt
   valA0= valA0 / 1024;
+  Serial.printf("Batterie:\t\t %f V\n", valA0);
   valA0 = valA0 * kor;
   dtostrf(valA0,7,2,floatString);
   Serial.printf("Batterie:\t\t %s V\n", floatString);
diff --git a/src/main.cpp b/src/main.cpp
index 3ac09a0..3e2def1 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -105,8 +105,7 @@ void setup() {
   #endif
   if (!F_ADS1115 == true){
     AKKU = getBattery(korectur);  // ca. 170 ms
-    Serial.println("ALTE UB MESSUNG:");
-    Serial.println(AKKU);
+    Serial.printf("ALTE UB MESSUNG:\t\t%2.2f \n", AKKU);
   }
   else{
     MessungADS();