Harmonized Tariff Schedule of the United States · HTS code · HS 8506.40
8506.40.10: Having an external volume not exceeding 300 cm3
Not declarable on its own: use one of its 2 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026
- 8506 Primary cells and primary batteries; parts thereof:
- 8506.40 Silver oxide:
- 8506.40.10 Having an external volume not exceeding 300 cm3
What you pay
Importing into USA
US additional duties of HTS chapter 99 in force on 22 October 2026 are included (Section 301, 232, 338 and 201). IEEPA duties are no longer collected after the Supreme Court ruling of February 2026. Conditional exemptions (US content, end use, metal share) are not computed: check the provision.
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
No additional measures recorded for this origin.
Preferential rates by country
| Agreement or scheme | Countries | Rate |
|---|---|---|
| General (MFN) | — | 2.7% |
| US–Australia FTA AU | Australia | Free |
| US–Bahrain FTA BH | Bahrain | Free |
| US–Chile FTA CL | Chile | Free |
| US–Colombia TPA CO | Colombia | Free |
| US–Israel FTA IL | Israel | Free |
| US–Jordan FTA JO | Jordan | Free |
| US–Korea FTA KR | South Korea | Free |
| US–Morocco FTA MA | Morocco | Free |
| US–Oman FTA OM | Oman | Free |
| CAFTA-DR P | Costa Rica, Dominican Republic, El Salvador, Guatemala, Honduras, Nicaragua | Free |
| US–Panama TPA PA | Panama | Free |
| US–Peru TPA PE | Peru | Free |
| USMCA S | Canada, Mexico | Free |
| US–Singapore FTA SG | Singapore | Free |
| Column 2 | Cuba, North Korea, Russia, Belarus | 35% |
Special: reduced rates under trade agreements and preference programmes; the letters in brackets name the programmes (for example AU = Australia FTA, KR = Korea FTA).
Subdivisions
- 8506.40.10 Having an external volume not exceeding 300 cm3 2.7%
- 8506.40.10.10 Button and coin cell batteries No.
- 8506.40.10.90 Other No.
Same subheading in other tariffs
8506.40 Primary cells and primary batteries: silver oxide
UK 4% Third-country duty 1 tariff line 
EU 4.7% Third-country duty 1 tariff line 
Türkiye 4.7% Third-country duty 1 tariff line 
Canada 7% Third-country duty 1 tariff line 
Mexico Free Third-country duty 1 tariff line 
Brazil Free – 14.4% Third-country duty 2 tariff lines · average 7.2% 
Argentina Free – 16% Third-country duty 2 tariff lines · average 8% 
Peru Free Third-country duty 3 tariff lines 
New Zealand Free Third-country duty 2 tariff lines 
Japan Free Third-country duty 1 tariff line 
Taiwan 2.5% Third-country duty 1 tariff line 
GCC 5% Third-country duty 2 tariff lines 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 1 tariff line 
North Macedonia 15% Third-country duty 1 tariff line 
Nigeria 20% Third-country duty 1 tariff line USA lines: 8506.40
Legal notes
HTS code 8506.40.10 is a line of the Harmonized Tariff Schedule of the United States under HS subheading 8506.40 (primary cells and primary batteries: silver oxide).
The general duty is 2.7%.
2 statistical sub-lines below it are used in the declaration.
For the same subheading, the UK duty is 4%, the EU duty is 4.7%, the Türkiye duty is 4.7%, the Canada duty is 7%, the Mexico duty is free, the Brazil duty is 0%–14.4%, the Argentina duty is 0%–16%, the Peru duty is free, the New Zealand duty is free, the Japan duty is free, the Taiwan duty is 2.5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is 15% and the Nigeria duty is 20%.
The United States imported goods of subheading 8506.40 worth US$72m in 2024; the largest supplier was Japan.
Questions and answers
What is the USA import duty for HTS code 8506.40.10?
The general duty in the Harmonized Tariff Schedule of the United States is 2.7%. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.
Is there a lower rate for 8506.40.10 under US trade agreements?
Yes. The Special column reads “Free (A, AU, BH, CL, CO,D,E, IL, JO, KR, MA, OM,P, PA, PE,S, SG)”: the letters in brackets name the agreements and programmes that grant it.
Where does the United States import these goods from?
For subheading 8506.40 as a whole, the largest supplier in 2024 was Japan (US$54m), followed by Switzerland.