diff --git a/Software/Software.ino b/Software/Software.ino
index 2074f191..dd0a545a 100644
--- a/Software/Software.ino
+++ b/Software/Software.ino
@@ -901,8 +901,13 @@ void update_calculated_values() {
       calc_max_capacity = (datalayer.battery.status.remaining_capacity_Wh * 10000 / datalayer.battery.status.real_soc);
       calc_reserved_capacity = calc_max_capacity * datalayer.battery.settings.min_percentage / 10000;
       // remove % capacity reserved in min_percentage to total_capacity_Wh
-      datalayer.battery.status.reported_remaining_capacity_Wh =
-          datalayer.battery.status.remaining_capacity_Wh - calc_reserved_capacity;
+      if (datalayer.battery.status.remaining_capacity_Wh > calc_reserved_capacity) {
+        datalayer.battery.status.reported_remaining_capacity_Wh =
+            datalayer.battery.status.remaining_capacity_Wh - calc_reserved_capacity;
+      } else {
+        datalayer.battery.status.reported_remaining_capacity_Wh = 0;
+      }
+
     } else {
       datalayer.battery.status.reported_remaining_capacity_Wh = datalayer.battery.status.remaining_capacity_Wh;
     }
@@ -918,8 +923,12 @@ void update_calculated_values() {
           (datalayer.battery2.status.remaining_capacity_Wh * 10000 / datalayer.battery2.status.real_soc);
       calc_reserved_capacity = calc_max_capacity * datalayer.battery2.settings.min_percentage / 10000;
       // remove % capacity reserved in min_percentage to total_capacity_Wh
-      datalayer.battery2.status.reported_remaining_capacity_Wh =
-          datalayer.battery2.status.remaining_capacity_Wh - calc_reserved_capacity;
+      if (datalayer.battery2.status.remaining_capacity_Wh > calc_reserved_capacity) {
+        datalayer.battery2.status.reported_remaining_capacity_Wh =
+            datalayer.battery2.status.remaining_capacity_Wh - calc_reserved_capacity;
+      } else {
+        datalayer.battery2.status.reported_remaining_capacity_Wh = 0;
+      }
     } else {
       datalayer.battery2.status.reported_remaining_capacity_Wh = datalayer.battery2.status.remaining_capacity_Wh;
     }