diff --git a/sale_order_batch/models/sale_order_line.py b/sale_order_batch/models/sale_order_line.py
index 1c0c5ae..4c243dd 100644
--- a/sale_order_batch/models/sale_order_line.py
+++ b/sale_order_batch/models/sale_order_line.py
@@ -1,9 +1,11 @@
-from odoo import api, models
+from odoo import api, fields, models
 
 
 class SaleOrderLine(models.Model):
     _inherit = "sale.order.line"
 
+    batch_id = fields.Many2one(related="order_id.batch_id")
+
     def _update_batch_products(self):
         for order_line in self:
             batch_id = order_line.order_id.batch_id