SR521SW Coin Cell Battery
SR521SW coin cells are ultra-thin silver oxide primary batteries with dimensions of 5.8mm x 2.1mm, well under 300 cm³, used in micro-electronics like glucose meters and hearing aids. Their silver oxide chemistry and coin configuration classify them under tariff item 8506.40.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 7% | — | 7% |
| 🇲🇽Mexico | 7% | — | 7% |
| 🇺🇸United States | 7% | — | 7% |
| 🇩🇪Germany | 7% | — | 7% |
| 🇯🇵Japan | 7% | — | 7% |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the cell is alkaline
Alkaline coin cells are classified under manganese dioxide.
If the chemistry is not silver oxide
Other primary cells fall under this residual heading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Classify the coin cells as silver oxide primary batteries under 8506.40.00
• Have the product specification sheet showing silver oxide composition and dimensions ready
• Verify if the shipment qualifies for duty-free treatment under a trade agreement by providing a certificate of origin
Related Products under Tariff item 8506.40.00
377 Silver Oxide Watch Battery
The 377 (SR626/377) silver oxide button battery is a primary non-rechargeable coin cell used in quartz watches and instruments, with a volume under 300 cm³. Its silver oxide electrolyte and compact design classify it under tariff item 8506.40.00 for silver oxide primary cells.
AG13 Silver Oxide Calculator Battery
AG13 silver oxide button cells are primary non-rechargeable coin batteries used in calculators and remotes, with a volume under 300 cm³. Their silver oxide chemistry and compact form classify them under tariff item 8506.40.00 for silver oxide primary cells.
Duracell D303/357 Silver Oxide Cell
Duracell D303/357 silver oxide primary cells are compact button batteries designed for watches, remote controls, and precision instruments. Their silver oxide chemistry and small external volume (under 300 cm³) place them squarely under tariff item 8506.40.00, which covers silver oxide primary cells and batteries.
Duracell PX76A Silver Oxide Lantern Battery
Duracell PX76A silver oxide A76 equivalent batteries are compact primary cells with a volume of approximately 0.25 cm³, used in small lanterns and remotes. Their silver oxide chemistry and small size classify them under tariff item 8506.40.00 for silver oxide primary cells.
Duracell Silver Oxide D377 Hearing Aid Battery
The Duracell D377 is a silver oxide cell optimized for digital hearing instruments, featuring advanced seal technology to prevent leakage. As a primary cell with a small volume, it falls under tariff item 8506.40.00 for silver oxide primary batteries.
Energizer LR44 Silver Oxide Button Cell Battery
The Energizer LR44 is a small silver oxide button cell battery with an external volume under 300 cm³, commonly used in watches, calculators, and small electronics. It is a primary cell that converts chemical energy into electrical energy without being rechargeable, which places it under tariff item 8506.40.00 for silver oxide primary cells.