diff --git a/Bat_EV_SDL/module.php b/Bat_EV_SDL/module.php
index 7f7a82a..1dacc67 100644
--- a/Bat_EV_SDL/module.php
+++ b/Bat_EV_SDL/module.php
@@ -29,7 +29,7 @@ class Bat_EV_SDL extends IPSModule
         $this->RegisterVariableString("CalcJSON", "Berechnung (JSON)", "", 99);
 
         // Timer (korrekt: Klassenname_Update)
-        $this->RegisterTimer("UpdateTimer", 0, 'Bat_EV_SDL_Update($_IPS["TARGET"]);');
+        $this->RegisterTimer("UpdateTimer", 0, 'GEF_Update($_IPS["TARGET"]);');
     }
 
     public function ApplyChanges()
@@ -185,14 +185,14 @@ class Bat_EV_SDL extends IPSModule
 
                     // Division absichern
                     $den = ($capKWh - $real_kWh + $underKWh);
-                    $SDL_SOC = ($den > 0.0) ? ((2.0 * $underKWh) / $den * 100.0) : 0.0;
+                    $SDL_SOC = ($den > 0.0) ? (  $den / (2.0 * $underKWh) * 100.0) : 0.0;
 
                     $sdlDisKW = $sdlShareKW;
                     $evDisKW  = $evShareKW;
                     $sdlChKW  = $sdlShareKW;
                     $evChKW   = 0.0;
 
-                    $real_kWh_ev  = $real_kWh - 2.0 * $underKWh;
+                    $real_kWh_ev  = $capKWh - 2.0 * $underKWh;
                     $real_kWh_sdl = (2.0 * $underKWh) - ($capKWh - $real_kWh);
 
                 } elseif ($underKWh > $real_kWh) {
@@ -263,6 +263,7 @@ class Bat_EV_SDL extends IPSModule
                     "Cap_kWh"   => round($capKWh, 3),
                     "SoC_varId" => $socVarId,
                     "SoC_pct"   => round($socPct, 3),
+                    "Effektive kWh"   => round($real_kWh, 3),
 
                     "EV_SOC"  => round($EV_SOC, 3),
                     "SDL_SOC" => round($SDL_SOC, 3),