WooCommerce Product Batch Numbers By WPoverNight GPL v3.2.1

This plugins makes that super easy, it’s lightweight and fully integrated with your current WooCommerce experience.

The WooCommerce Product Batch Numbers plugin GPL is a small extension that enables you to manage batch numbers or lot numbers at a product and order level inside WooCommerce. It supports both simple and variable products, allowing you to track those numbers easily in terms of expiration date, supplier and availability.