diff --git a/app.py b/app.py
index f89e243..7db066c 100644
--- a/app.py
+++ b/app.py
@@ -28,7 +28,13 @@ def create_app(config_object="config"):
     @app.route("/")
     def dashboard():
         batteries = db.query(Battery).order_by(Battery.label).all()
-        return render_template("dashboard.html", batteries=batteries)
+        storage_locations = [
+            r[0] for r in db.query(Battery.storage_location)
+            .filter(Battery.storage_location.isnot(None))
+            .distinct().order_by(Battery.storage_location).all()
+        ]
+        return render_template("dashboard.html", batteries=batteries,
+                               storage_locations=storage_locations)
 
     # ------------------------------------------------------------------ #
     # Battery — add
@@ -278,6 +284,21 @@ def create_app(config_object="config"):
                 b.brand = new_brand
             db.commit()
             flash(f"Updated brand to '{new_brand}' for {n} batter{'y' if n == 1 else 'ies'}.", "success")
+        elif action == "set_field":
+            field_name = request.form.get("field_name", "").strip()
+            field_value = request.form.get("field_value", "").strip() or None
+            allowed = {"brand", "storage_location"}
+            if field_name not in allowed:
+                flash("Invalid field.", "error")
+                return redirect(url_for("dashboard"))
+            if field_name == "brand" and not field_value:
+                flash("Brand name is required.", "error")
+                return redirect(url_for("dashboard"))
+            for b in batteries:
+                setattr(b, field_name, field_value)
+            db.commit()
+            label = field_name.replace("_", " ").title()
+            flash(f"Set {label} on {n} batter{'y' if n == 1 else 'ies'}.", "success")
         else:
             flash("Unknown action.", "error")
 
diff --git a/templates/dashboard.html b/templates/dashboard.html
index 89b29c0..beb10de 100644
--- a/templates/dashboard.html
+++ b/templates/dashboard.html
@@ -37,10 +37,36 @@
       <button class="btn btn-sm btn-secondary" name="action" value="retire" type="submit">Retire</button>
       <button class="btn btn-sm btn-danger" name="action" value="delete" type="submit"
               onclick="return confirm('Permanently delete selected batteries?')">Delete</button>
-      <span style="display:flex;gap:0.35rem;align-items:center;">
-        <input type="text" name="new_brand" id="new-brand-input" placeholder="New brand name"
-               style="padding:0.25rem 0.5rem;font-size:0.85rem;border:1px solid #cbd5e1;border-radius:4px;width:160px;">
-        <button class="btn btn-sm btn-primary" name="action" value="set_brand" type="submit">Change Brand</button>
+      <span style="display:flex;gap:0.35rem;align-items:center;flex-wrap:wrap;">
+        <input type="hidden" name="field_name" id="bulk-field-name" value="storage_location">
+        <select id="bulk-field-select" onchange="updateBulkField(this)"
+                style="padding:0.25rem 0.5rem;font-size:0.85rem;border:1px solid #cbd5e1;border-radius:4px;">
+          <option value="storage_location">Storage Location</option>
+          <option value="brand">Brand</option>
+        </select>
+        <!-- Storage Location value -->
+        <span id="bulk-val-storage_location" style="display:flex;gap:0.25rem;align-items:center;">
+          <select id="bulk-storage-select" onchange="bulkStorageChanged(this)"
+                  style="padding:0.25rem 0.5rem;font-size:0.85rem;border:1px solid #cbd5e1;border-radius:4px;">
+            <option value="">— select —</option>
+            {% for loc in storage_locations|default([]) %}
+            <option value="{{ loc }}">{{ loc }}</option>
+            {% endfor %}
+            <option value="__new__">➕ New location…</option>
+          </select>
+          <input type="text" id="bulk-storage-text"
+                 style="display:none;padding:0.25rem 0.5rem;font-size:0.85rem;border:1px solid #cbd5e1;border-radius:4px;width:140px;"
+                 placeholder="Type location">
+          <input type="hidden" name="field_value" id="bulk-field-value-storage" value="">
+        </span>
+        <!-- Brand value -->
+        <span id="bulk-val-brand" style="display:none;">
+          <input type="text" id="bulk-brand-text" oninput="document.getElementById('bulk-field-value-brand').value=this.value"
+                 style="padding:0.25rem 0.5rem;font-size:0.85rem;border:1px solid #cbd5e1;border-radius:4px;width:160px;"
+                 placeholder="New brand name">
+          <input type="hidden" name="field_value" id="bulk-field-value-brand" value="">
+        </span>
+        <button class="btn btn-sm btn-primary" name="action" value="set_field" type="submit">Apply</button>
       </span>
     </div>
 
@@ -127,5 +153,31 @@
     updateToolbar();
   });
 }());
+
+function updateBulkField(sel) {
+  var field = sel.value;
+  document.getElementById('bulk-field-name').value = field;
+  document.getElementById('bulk-val-storage_location').style.display = field === 'storage_location' ? 'flex' : 'none';
+  document.getElementById('bulk-val-brand').style.display = field === 'brand' ? 'flex' : 'none';
+  document.getElementById('bulk-field-value-storage').disabled = (field !== 'storage_location');
+  document.getElementById('bulk-field-value-brand').disabled = (field !== 'brand');
+}
+// initialise disabled state on page load
+document.getElementById('bulk-field-value-brand').disabled = true;
+
+function bulkStorageChanged(sel) {
+  var text = document.getElementById('bulk-storage-text');
+  var hidden = document.getElementById('bulk-field-value-storage');
+  if (sel.value === '__new__') {
+    text.style.display = '';
+    text.value = '';
+    text.oninput = function() { hidden.value = text.value; };
+    text.focus();
+    hidden.value = '';
+  } else {
+    text.style.display = 'none';
+    hidden.value = sel.value;
+  }
+}
 </script>
 {% endblock %}