diff --git a/TEF6686_ESP32.ino b/TEF6686_ESP32.ino
index c760810..bbf9214 100644
--- a/TEF6686_ESP32.ino
+++ b/TEF6686_ESP32.ino
@@ -3979,11 +3979,10 @@ void ShowBattery() {
     return;
   }
 
-  int16_t batteryadc = analogRead(BATTERY_PIN);
-  battery = map(constrain(batteryadc, BAT_LEVEL_EMPTY, BAT_LEVEL_FULL), BAT_LEVEL_EMPTY, BAT_LEVEL_FULL, 0, BAT_LEVEL_STAGE);
+  battery = map(constrain(analogRead(BATTERY_PIN), BAT_LEVEL_EMPTY, BAT_LEVEL_FULL), BAT_LEVEL_EMPTY, BAT_LEVEL_FULL, 0, BAT_LEVEL_STAGE);
   if (batteryold != battery) {
     if (batterydetect) {
-      if (batteryadc < BAT_LEVEL_WARN) {
+      if (battery == 0) {
         tft.drawRect(300, 8, 12, 20, TFT_RED);
         tft.fillRect(303, 4, 6, 4, TFT_RED);
         tft.fillRect(302, 10, 8, 16, TFT_BLACK);