HS Code for Mercury battery

The classification of mercury batteries under HS code 8506.30 is strictly governed by the Harmonized System's General Rules of Interpretation (GRI). According to GRI 1, classification is determined by the terms of the headings and any relative section or chapter notes. Heading 8506 covers primary cells and primary batteries, which are defined as electrochemical sources of energy that are not designed to be recharged. Within this heading, the 8506.30 subheading is specifically dedicated to mercuric oxide systems. These batteries utilize a chemical reaction between mercuric oxide and a negative electrode, typically zinc, to produce a stable electrical output. Historically, they were valued for their constant voltage discharge and long shelf life, making them ideal for precision instruments. The classification remains consistent regardless of the battery's physical shape, whether it is a button cell, cylindrical, or a custom industrial configuration, provided the primary chemical couple is mercuric oxide. It is essential to distinguish these from secondary (rechargeable) batteries, which fall under heading 8507. Furthermore, the Explanatory Notes to heading 8506 clarify that primary cells consist of a container holding an electrolyte and electrodes, and the 8506.30 code specifically captures the mercuric oxide chemistry regardless of the application, from vintage cameras to legacy medical devices.

Products Included

• Mercuric oxide button cells
• Mercury-zinc primary batteries
• Mercuric oxide-indium batteries
• Primary mercury cells for legacy medical equipment
• Mercury-based batteries for vintage photographic light meters

Common Misclassification

Mercury batteries are frequently misclassified under HS code 8507.80, which covers other secondary (rechargeable) accumulators. However, mercury batteries are primary cells and cannot be recharged. Another common error is using 8506.10, which is reserved for manganese dioxide batteries, or 8506.50 for lithium batteries. The distinction is based entirely on the chemical composition of the cathode. Additionally, some importers mistakenly use 8548.00 for spent mercury batteries, but waste and scrap of primary cells are more accurately classified under 8549.11 in the latest HS nomenclature.

FAQ

What is the HS code for mercury battery?

The specific HS code for mercury batteries (mercuric oxide primary cells) is 8506.30.

Are mercury batteries still legal to trade?

While the HS code 8506.30 exists for trade identification, many countries have banned or strictly regulated the import and sale of mercury batteries under the Minamata Convention due to environmental toxicity.