diff --git a/v2realbot/controller/services.py b/v2realbot/controller/services.py
index 11a8ead..023184e 100644
--- a/v2realbot/controller/services.py
+++ b/v2realbot/controller/services.py
@@ -343,7 +343,7 @@ def capsule(target: object, db: object, inter_batch_params: dict = None):
                         print(f"Daily report ERROR - {val}")
                 except Exception as e:
                     print("Nepodarilo se vytvorit report image", str(e)+format_exc())       
-
+        target.release()
     print("Runner STOPPED")
 
 #vrátí konkrétní sadu testlistu
@@ -519,6 +519,8 @@ def batch_run_manager(id: UUID, runReq: RunRequest, rundays: list[RunDay]):
             #i.history += str(runner.__dict__)+"<BR>"
             db.save()
 
+    inter_batch_params = None
+    runReq = None
     #vytvoreni report image pro batch
     try:
         res, val = generate_trading_report_image(batch_id=batch_id)
@@ -1077,6 +1079,23 @@ def delete_report_files(id):
         print(f"An error occurred while deleting the file: {e}")
         return (-1, str(e))        
 
+#delete runners by BatchID
+#NOTE: Batch image is deleted on runners level - uvidime jak to bude moc overhead
+def delete_archived_runners_byBatchID(batch_id: str):
+        res, runner_ids = get_archived_runnerslist_byBatchID(batch_id)
+
+        if res != 0:
+            print(f"no batch {batch_id} found")
+            return -1, f"no batch {batch_id} found"
+        
+        res, val = delete_archived_runners_byIDs(runner_ids)
+
+        if res == 0:
+            return 0, batch_id
+        else:
+            print(f"error delete")
+            return res, f"ERROR deleting {batch_id} : {val}"
+
 #delete runner in archive and archive detail and runner logs
 #predelano do JEDNE TRANSAKCE
 def delete_archived_runners_byIDs(ids: list[UUID]):
@@ -1096,8 +1115,9 @@ def delete_archived_runners_byIDs(ids: list[UUID]):
                 c.execute("SELECT COUNT(*) FROM runner_header WHERE batch_id = ?", (batch_id,))
                 count = c.fetchone()[0]
                 if count == 1:
-                    # If it's the last record, call delete_report_files
+                    # If it's the last record, call delete_batch_report_files
                     delete_report_files(batch_id)
+                    print("Batch report file deleted")
 
             resh = c.execute(f"DELETE from runner_header WHERE runner_id='{str(id)}';")
             print("header deleted",resh.rowcount)
diff --git a/v2realbot/main.py b/v2realbot/main.py
index 1faca47..c942b3a 100644
--- a/v2realbot/main.py
+++ b/v2realbot/main.py
@@ -440,6 +440,17 @@ def _delete_archived_runners_byIDs(runner_ids: list[UUID]):
     elif res < 0:
         raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=f"Error: {res}:{id}")
 
+#delete archive runner from header and detail
+@app.delete("/archived_runners/batch/{batch_id}", dependencies=[Depends(api_key_auth)], status_code=status.HTTP_200_OK)
+def _delete_archived_runners_byBatchID(batch_id: str):
+    res, id = cs.delete_archived_runners_byBatchID(batch_id=batch_id)
+    if res == 0: return id
+    elif res == -1:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=f"Error: {res}:{id}")
+    else:
+        raise HTTPException(status_code=status.HTTP_406_NOT_ACCEPTABLE, detail=f"Error not changed: {res}:{batch_id}:{id}")
+
+
 #WIP - TOM indicator preview from frontend
 #return indicator value for archived runner
 @app.put("/archived_runners/{runner_id}/previewindicator", dependencies=[Depends(api_key_auth)], status_code=status.HTTP_200_OK)
diff --git a/v2realbot/static/index.html b/v2realbot/static/index.html
index 6c44104..4ff4877 100644
--- a/v2realbot/static/index.html
+++ b/v2realbot/static/index.html
@@ -302,6 +302,7 @@
                     <div id="controls">
                         <button id="button_edit_arch" class="btn btn-outline-success btn-sm">Edit(a)</button>
                         <button id="button_delete_arch" class="btn btn-outline-success btn-sm">Delete(d)</button>
+                        <button id="button_delete_batch" class="btn btn-outline-success btn-sm">Delete Batch(b)</button>
                         <button id="button_show_arch" class="btn btn-outline-success btn-sm">Show(w)</button>
                         <button id="button_refresh" class="refresh btn btn-outline-success btn-sm">Refresh</button>
                         <button id="button_compare_arch" class="refresh btn btn-outline-success btn-sm">Compare</button>
@@ -366,6 +367,28 @@
                         </form>
                     </div>
                 </div>
+                <div id="delModalBatch" class="modal fade">
+                    <div class="modal-dialog">
+                        <form method="post" id="delFormBatch">
+                            <div class="modal-content">
+                                <div class="modal-header">
+                                    <h4 class="modal-title"><i class="fa fa-plus"></i> Delete Batch</h4>
+                                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+                                </div>
+                                <div class="modal-body">
+                                    <div class="form-group">
+                                        <label for="batch_id_del" class="form-label">Batch ID</label>
+                                        <input type="text" class="form-control" id="batch_id_del" name="delidarchive" placeholder="batch id" readonly>
+                                    </div>				
+                                </div>
+                                <div class="modal-footer">
+                                    <input type="submit" name="delete" id="deletebatch" class="btn btn-primary" value="Delete" />
+                                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+                                </div>
+                            </div>
+                        </form>
+                    </div>
+                </div>
                 <div id="logModal" class="modal fade" style="--bs-modal-width: 825px;">
                     <div class="modal-dialog">
                             <div class="modal-content">
diff --git a/v2realbot/static/js/archivetables.js b/v2realbot/static/js/archivetables.js
index 5a59e8b..dd2f2e2 100644
--- a/v2realbot/static/js/archivetables.js
+++ b/v2realbot/static/js/archivetables.js
@@ -210,6 +210,7 @@ $(document).ready(function () {
     $('#button_runagain_arch').attr('disabled','disabled');
     $('#button_show_arch').attr('disabled','disabled');
     $('#button_delete_arch').attr('disabled','disabled');
+    $('#button_delete_batch').attr('disabled','disabled');
     $('#button_analyze').attr('disabled','disabled');
     $('#button_edit_arch').attr('disabled','disabled');
     $('#button_compare_arch').attr('disabled','disabled');
@@ -222,6 +223,7 @@ $(document).ready(function () {
             $('#button_analyze').attr('disabled','disabled');
             $('#button_runagain_arch').attr('disabled','disabled');
             $('#button_delete_arch').attr('disabled','disabled');
+            $('#button_delete_batch').attr('disabled','disabled');
             $('#button_edit_arch').attr('disabled','disabled');
             $('#button_compare_arch').attr('disabled','disabled');
         } else {
@@ -231,6 +233,7 @@ $(document).ready(function () {
             $('#button_show_arch').attr('disabled',false);
             $('#button_runagain_arch').attr('disabled',false);
             $('#button_delete_arch').attr('disabled',false);
+            $('#button_delete_batch').attr('disabled',false);
             $('#button_edit_arch').attr('disabled',false);
             $('#button_compare_arch').attr('disabled',false);
         }
@@ -532,7 +535,56 @@ $(document).ready(function () {
         refresh_logfile()
     });
 
-    //delete button
+    //delete batch button
+    $('#button_delete_batch').click(function () {
+        row = archiveRecords.row('.selected').data();
+        if (row == undefined || row.batch_id == undefined) {
+            return
+        }
+        $('#batch_id_del').val(row.batch_id);
+
+        rows = archiveRecords.rows('.selected');
+        if (rows == undefined) {
+            return
+        }
+        $('#listofids').html("");
+        window.$('#delModalBatch').modal('show');
+    });
+
+    //delete batch modal
+    $("#delModalBatch").on('submit','#delFormBatch', function(event){
+        event.preventDefault();
+        row = archiveRecords.row('.selected').data();
+        if (row == undefined || row.batch_id == undefined) {
+            return
+        }
+        $.ajax({
+            url:"/archived_runners/batch/"+row.batch_id,
+            beforeSend: function (xhr) {
+                xhr.setRequestHeader('X-API-Key',
+                    API_KEY); },
+            method:"DELETE",
+            contentType: "application/json",
+            dataType: "json",
+            data: JSON.stringify(row.batch_id),
+            success:function(data){				
+                $('#delFormBatch')[0].reset();
+                window.$('#delModalBatch').modal('hide');				
+                $('#button_delete_batch').attr('disabled', false);
+                //console.log(data)
+                archiveRecords.ajax.reload();
+            },
+            error: function(xhr, status, error) {
+                var err = eval("(" + xhr.responseText + ")");
+                window.alert(JSON.stringify(xhr));
+                console.log(JSON.stringify(xhr));
+                $('#button_delete_batch').attr('disabled', false);
+                archiveRecords.ajax.reload();
+            }
+        })
+    });
+
+    //delete arch button
     $('#button_delete_arch').click(function () {
         rows = archiveRecords.rows('.selected');
         if (rows == undefined) {
diff --git a/v2realbot/static/js/utils.js b/v2realbot/static/js/utils.js
index 5b98686..c7b6949 100644
--- a/v2realbot/static/js/utils.js
+++ b/v2realbot/static/js/utils.js
@@ -902,6 +902,9 @@ Mousetrap.bind('e', function() {
 Mousetrap.bind('d', function() { 
     $( "#button_delete_arch" ).trigger( "click" );
 });
+Mousetrap.bind('b', function() { 
+  $( "#button_delete_batch" ).trigger( "click" );
+});
 Mousetrap.bind('c', function() { 
     $( "#button_copy" ).trigger( "click" );
 });
diff --git a/v2realbot/strategy/base.py b/v2realbot/strategy/base.py
index 6a1c0fa..fcdaee2 100644
--- a/v2realbot/strategy/base.py
+++ b/v2realbot/strategy/base.py
@@ -509,6 +509,17 @@ class Strategy:
         #     self.order_notifs.stop()
         # self.dataloader.stop()
 
+    def release(self):
+        #release large variables
+        self.bt = None
+        self.btdata= None
+        self.dataloader = None
+        self.state = None
+        self.rtqueue = None
+        self._streams = None
+
+
+
     #for order updates from LIVE or BACKTEST
     #updates are sent only for SYMBOL of strategy