First of all, you need to check whether the necessary settings are enabled in the Odoo system. To do this, go to "Settings" - "Warehouse".
Check if there is a check mark next to the "Options" setting:
To add a product characteristic, you need to create a corresponding attribute. To do this, go to the "Warehouse" - "Settings" - "Attributes" module:
Create a new attribute. Specify the name of the attribute. For example, battery power. It is important that the option creation mode is set to "Never":
Below are the possible values of the attribute:
Next, in the product settings, in the "Attributes and Variants" tab, we specify the characteristics of this product:
This field will be used as an information field - to search for products with a certain characteristic, for filtering on the site:
You can also create an attribute and value for a product characteristic directly in the product card: