HS Code for Button cell battery

Button cell batteries utilizing silver oxide chemistry are classified under HS code 8506.40. This classification is based on the electrochemical system of the battery and its status as a primary (non-rechargeable) cell. Heading 8506 covers primary cells and primary batteries, and the subheadings are organized by the chemical composition of the cathode and electrolyte. Silver oxide batteries are characterized by their high energy density and stable discharge voltage, making them ideal for small electronic devices. The term "button cell" refers to the physical shape—small, cylindrical, and flat—but the HS code 8506.40 specifically targets the silver oxide chemistry. If the battery is a primary cell using silver oxide, it must be classified here regardless of its specific dimensions, provided it is not a secondary (rechargeable) battery.

Products Included

• Silver oxide button cells (SR series)
• SR44 and SR626SW watch batteries
• Primary silver-zinc button batteries
• Silver oxide cells for medical hearing aids
• Small silver oxide batteries for precision instruments

Common Misclassification

The most common misclassification occurs with HS code 8506.50, which covers lithium primary batteries. While both can be button-shaped, the chemistry is the deciding factor. Additionally, many users confuse these with HS code 8507.60 or 8507.80, which are for rechargeable (secondary) batteries. If a button cell is rechargeable (such as a lithium-ion LIR2032), it cannot be classified under 8506 and must move to 8507. Finally, manganese dioxide button cells are often incorrectly placed here instead of under 8506.10.

FAQ

What is the HS code for silver oxide button batteries?

The specific HS code for primary silver oxide cells and batteries is 8506.40.

Can rechargeable button cells use this HS code?

No, HS code 8506.40 is strictly for primary (non-rechargeable) cells. Rechargeable batteries are classified under heading 8507.