diff --git a/include/mess_Ub_old.h b/include/mess_Ub_old.h
index 2a18215..4ceed83 100644
--- a/include/mess_Ub_old.h
+++ b/include/mess_Ub_old.h
@@ -1,7 +1,7 @@
 #include <Arduino.h>
 
 const float MinimalSpannung = 2.85;
-float koa = 0.984326019;
+float korectur = 0.8870;
 char floatString[15] = {0};
 float AKKU;
 
@@ -12,7 +12,7 @@ float getBattery(float kor = 1.000)
     return 3.05;
   #endif
   float valA0 = analogRead(A0);
-  valA0 = valA0 * 3.7;	// (R1 + r1 + r2) / r2
+  valA0 = valA0 * 5.9;	// (R1 + r1 + r2) / r2
 						// r1 und r2 Spannungsteiler
 						// r1 = 270k, r2 = 100k
 						// Spannungsbereich = 5.2 Volt
diff --git a/src/main.cpp b/src/main.cpp
index 1961a57..0dce0ff 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -28,7 +28,8 @@ PubSubClient client(espClient);
 //#include <mess_BMP280.h>
 #include <mess_BME280.h>
 
-#include <mess_Ub.h>
+//#include <mess_Ub.h>
+#include <mess_Ub_old.h>
 
 #include <messADS1115.h>
 
@@ -100,8 +101,9 @@ void setup() {
   initADS();
   #endif
   if (!F_ADS1115 == true){
-    AKKU = getBattery();  // ca. 170 ms
+    AKKU = getBattery(korectur);  // ca. 170 ms
     Serial.println("ALTE UB MESSUNG:");
+    Serial.println(AKKU);
   }
   else{
     MessungADS();