diff --git a/addons/website_sale/static/src/js/website_sale.js b/addons/website_sale/static/src/js/website_sale.js
index 2f1f7e64510..af03a546496 100644
--- a/addons/website_sale/static/src/js/website_sale.js
+++ b/addons/website_sale/static/src/js/website_sale.js
@@ -80,6 +80,9 @@ publicWidget.registry.websiteSaleCartLink = publicWidget.Widget.extend({
                 $('.popover').on('mouseleave', function () {
                     self.$el.trigger('mouseleave');
                 });
+                self.cartQty = +$(data).find('.o_wsale_cart_quantity').text();
+                sessionStorage.setItem('website_sale_cart_quantity', self.cartQty);
+                self._updateCartQuantityText();
             });
         }, 300);
     },
@@ -129,10 +132,16 @@ publicWidget.registry.websiteSaleCartLink = publicWidget.Widget.extend({
     /**
      * @private
      */
-    _updateCartQuantityValue() {
-        return this._rpc({route: "/shop/cart/quantity"}).then((cartQty) => {
-            this.cartQty = cartQty;
-        });
+    async _updateCartQuantityValue() {
+        if ('website_sale_cart_quantity' in sessionStorage) {
+            this.cartQty = sessionStorage.getItem('website_sale_cart_quantity');
+        }
+        if (this.el.querySelector('.my_cart_quantity').innerText != this.cartQty) {
+            return this._rpc({route: "/shop/cart/quantity"}).then((cartQty) => {
+                this.cartQty = cartQty;
+                sessionStorage.setItem('website_sale_cart_quantity', this.cartQty);
+            });
+        }
     },
     /**
      * @private
@@ -359,6 +368,7 @@ publicWidget.registry.WebsiteSale = publicWidget.Widget.extend(VariantMixin, car
                 $input.trigger('change');
                 return;
             }
+            sessionStorage.setItem('website_sale_cart_quantity', data.cart_quantity);
             if (!data.cart_quantity) {
                 return window.location = '/shop/cart';
             }
diff --git a/addons/website_sale/static/src/js/website_sale_utils.js b/addons/website_sale/static/src/js/website_sale_utils.js
index e5139a21910..af2e96aff98 100644
--- a/addons/website_sale/static/src/js/website_sale_utils.js
+++ b/addons/website_sale/static/src/js/website_sale_utils.js
@@ -34,6 +34,7 @@ const cartHandlerMixin = {
             route: "/shop/cart/update_json",
             params: params,
         }).then(async data => {
+            sessionStorage.setItem('website_sale_cart_quantity', data.cart_quantity);
             if (data.cart_quantity && (data.cart_quantity !== parseInt($(".my_cart_quantity").text()))) {
                 await animateClone($('header .o_wsale_my_cart').first(), this.$itemImgContainer, 25, 40);
                 updateCartNavBar(data);
diff --git a/addons/website_sale/views/templates.xml b/addons/website_sale/views/templates.xml
index 31a8af23e08..57c1d43a7ca 100644
--- a/addons/website_sale/views/templates.xml
+++ b/addons/website_sale/views/templates.xml
@@ -1268,8 +1268,8 @@
                     </t>
                 </span>
                 <a role="button" class="btn btn-primary" href="/shop/cart">
-                       View Cart (<t t-esc="website_sale_order.cart_quantity" /> item(s))
-                     </a>
+                    View Cart (<span class="o_wsale_cart_quantity" t-esc="website_sale_order.cart_quantity" /> item(s))
+                </a>
             </div>
         </t>
     </template>
diff --git a/addons/website_sale_product_configurator/static/src/js/website_sale_options.js b/addons/website_sale_product_configurator/static/src/js/website_sale_options.js
index 932ae557cd0..0c43812b4b5 100644
--- a/addons/website_sale_product_configurator/static/src/js/website_sale_options.js
+++ b/addons/website_sale_product_configurator/static/src/js/website_sale_options.js
@@ -116,6 +116,7 @@ publicWidget.registry.WebsiteSale.include({
                         const $quantity = $(".my_cart_quantity");
                         $quantity.parent().parent().removeClass('d-none');
                         $quantity.text(quantity).hide().fadeIn(600);
+                        sessionStorage.setItem('website_sale_cart_quantity', quantity);
                     });
             });
     },