HS Code for Watch battery

Watch batteries are classified under HS code 8506.40 because they are defined as primary cells and primary batteries utilizing silver oxide as the active cathode material. In the Harmonized System, batteries are categorized primarily by their chemical composition and whether they are rechargeable (secondary) or non-rechargeable (primary). Silver oxide batteries are the industry standard for quartz watches due to their high energy-to-weight ratio and their ability to maintain a stable voltage discharge until the end of their life cycle. According to General Interpretative Rule (GIR) 1, classification is determined by the terms of the headings and any relative section or chapter notes. Chapter 85, Note 3, clarifies the distinction between primary cells and accumulators. Since watch batteries of this type are designed for single use and rely on the silver oxide-zinc chemical reaction, they are specifically assigned to the 8506.40 subheading. The classification remains consistent regardless of the battery's physical size, provided the chemistry is silver oxide.

Products Included

• Silver oxide button cells
• SR44 and SR44W batteries
• SR626SW watch batteries
• Low-drain silver oxide cells for analog watches
• High-drain silver oxide cells for digital or chronograph watches
• Multi-drain silver oxide cells

Common Misclassification

Watch batteries are frequently misclassified under HS code 8506.50, which covers lithium primary cells. While many modern watches use lithium coin cells (like the CR2032), these must be declared under 8506.50 due to their different chemical composition. Another common error is using HS code 8507.80, which is reserved for rechargeable (secondary) batteries. If a watch uses a rechargeable lithium-ion cell, it cannot be classified under 8506.40.

FAQ

What is the HS code for watch battery?

The HS code for a standard silver oxide watch battery is 8506.40.

Can alkaline button cells be classified here?

No, alkaline button cells (often used in cheaper watches or toys) are classified under HS code 8506.10, as they utilize manganese dioxide.