The core difference
A serial number is a unique identifier assigned to one specific physical unit no two units, even of the identical product, share the same serial number. It allows tracking that exact item individually throughout its lifecycle: this specific laptop, this specific piece of equipment, this specific high-value asset.
A batch number (also called a lot number) identifies a group of units that were produced, mixed, or received together as a single production or shipment run. All units within that batch share the same batch number units are not individually distinguished from each other within the group.
When to use each approach
Serial number tracking fits products where each individual unit matters distinctly high-value electronics, equipment with warranty or maintenance history, or anything where knowing exactly which unit a customer has (for a recall, repair, or warranty claim) is essential.
Batch tracking fits products where individual units within a production run are functionally identical and traceability at the group level is what matters food ingredients, pharmaceuticals, chemicals, or any product where a quality issue would affect an entire production run rather than one specific unit.
- Serial number: unique per unit, best for high-value or individually distinct items
- Batch/lot number: shared across a production group, best for identical units from the same run
Using both together
Some products benefit from both layers of traceability: a batch number identifying which production run a unit came from, plus a serial number identifying that specific individual unit within the batch. This is common for higher-value manufactured goods where both a recall affecting an entire production run and an individual unit's specific history (repairs, ownership, warranty status) both matter.
Whether you need one, the other, or both depends on your regulatory requirements, product risk profile, and how customers or downstream partners expect to reference the product a decision worth making deliberately rather than defaulting to whichever tracking method a system happens to support first.
Trusted by small businesses
What our customers say
“Super Kind! Quick replies from their support and very easy fixes, changed the dashboard a bit and customized it. Also gave me 450 items extra on the free plan just for me. Highly recommend and again great service!”
“Best customer service! Stockflow's customer support is fast and extremely helpful. They assisted me with customization of the software to improve my experience as a user.”