diff --git a/src/main/java/kamkeel/npcs/controllers/data/energycharge/EnergyChargePreviewManager.java b/src/main/java/kamkeel/npcs/controllers/data/energycharge/EnergyChargePreviewManager.java
index 2349f1975..558399de1 100644
--- a/src/main/java/kamkeel/npcs/controllers/data/energycharge/EnergyChargePreviewManager.java
+++ b/src/main/java/kamkeel/npcs/controllers/data/energycharge/EnergyChargePreviewManager.java
@@ -13,6 +13,9 @@ import java.util.concurrent.ConcurrentHashMap;
  */
 public class EnergyChargePreviewManager {
 
+    /** Hard age cap for preview entities — last-resort safety net (60 seconds). */
+    private static final int MAX_PREVIEW_AGE = 1200;
+
     public static EnergyChargePreviewManager ClientInstance;
 
     private final ConcurrentHashMap<String, EntityEnergyProjectile> previews = new ConcurrentHashMap<String, EntityEnergyProjectile>();
@@ -59,6 +62,14 @@ public class EnergyChargePreviewManager {
                 iterator.remove();
                 continue;
             }
+
+            // Hard age cap: remove previews that have existed far too long
+            if (entity.ticksExisted > MAX_PREVIEW_AGE) {
+                entity.setDead();
+                iterator.remove();
+                continue;
+            }
+
             entity.onUpdate();
             if (entity.isDead) {
                 iterator.remove();
diff --git a/src/main/java/kamkeel/npcs/entity/EntityEnergyAbility.java b/src/main/java/kamkeel/npcs/entity/EntityEnergyAbility.java
index 01b39f80d..7922f7191 100644
--- a/src/main/java/kamkeel/npcs/entity/EntityEnergyAbility.java
+++ b/src/main/java/kamkeel/npcs/entity/EntityEnergyAbility.java
@@ -21,6 +21,7 @@ public abstract class EntityEnergyAbility extends Entity implements IEntityAddit
 
     // ==================== SAFETY CONSTANTS ====================
     protected static final int CHARGE_TIMEOUT_GRACE = 60;          // Ticks of grace after charge should have ended
+    protected static final int PREVIEW_CHARGE_GRACE = 3;            // Ticks of grace for client-only charge previews
     protected static final int HARD_LIFETIME_CAP = 1200;           // 60 seconds absolute max for projectiles/sweepers
     protected static final int BARRIER_HARD_LIFETIME_CAP = 12000;  // 10 minutes absolute max for barriers
     protected static final float MAX_ENTITY_SIZE = 100.0f;         // Max size/width/length for any energy entity
@@ -94,7 +95,7 @@ public abstract class EntityEnergyAbility extends Entity implements IEntityAddit
 
     public float getInterpolatedChargeProgress(float partialTicks) {
         if (chargeDuration <= 0) return 1.0f;
-        float prevProgress = Math.max(0, (float) (chargeTick - 1) / chargeDuration);
+        float prevProgress = Math.min(1.0f, Math.max(0, (float) (chargeTick - 1) / chargeDuration));
         float currProgress = Math.min(1.0f, (float) chargeTick / chargeDuration);
         return prevProgress + (currProgress - prevProgress) * partialTicks;
     }
diff --git a/src/main/java/kamkeel/npcs/entity/EntityEnergyProjectile.java b/src/main/java/kamkeel/npcs/entity/EntityEnergyProjectile.java
index 091af5086..02a124ae3 100644
--- a/src/main/java/kamkeel/npcs/entity/EntityEnergyProjectile.java
+++ b/src/main/java/kamkeel/npcs/entity/EntityEnergyProjectile.java
@@ -232,6 +232,18 @@ public abstract class EntityEnergyProjectile extends EntityEnergyAbility {
             // Preview entities skip super.onUpdate() but still need ticksExisted
             // for renderer pulsing effects (e.g., sin(ticksExisted + partialTicks)).
             this.ticksExisted++;
+
+            // Preview-specific safety: self-destruct if charging has exceeded duration + grace
+            if (isCharging() && chargeDuration > 0 && chargeTick > chargeDuration + PREVIEW_CHARGE_GRACE) {
+                this.setDead();
+                return;
+            }
+
+            // Preview hard lifetime cap (mirrors real entity HARD_LIFETIME_CAP)
+            if (ticksExisted > HARD_LIFETIME_CAP) {
+                this.setDead();
+                return;
+            }
         }
 
         if (!previewMode) {