diff --git a/Bat_EV_SDL _V2/module.php b/Bat_EV_SDL _V2/module.php
index 32ba25a..32d1421 100644
--- a/Bat_EV_SDL _V2/module.php	
+++ b/Bat_EV_SDL _V2/module.php	
@@ -189,8 +189,9 @@ class Bat_EV_SDL_V2 extends IPSModule
 
                     $den1 = ($capKWh - $real_kWh + $underKWh);
                     $den2 = (2.0 * $underKWh);
+
                     if ($den1 > 0.0 && $den2 > 0.0) {
-                        $SDL_SOC = ($den1 / $den2) * 100.0;
+                        $SDL_SOC = min(100.0, ($den1 / $den2) * 100.0);
                     } else {
                         $SDL_SOC = 0.0;
                     }