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HSChapter 85
U.S. exports of primary cells & batteries, mercuric oxide (HS 850630) totaled $37K in June 2026, traded with 1 country.
Last updated: June 2026 dataMercuric oxide primary batteries occupy a narrow but technically specialized market segment, valued for their exceptionally flat discharge curve and stable voltage output in applications such as medical devices, military equipment, and precision instruments. The US schedule divides the heading by physical volume — batteries of 300 cm³ or less (8506301000) versus those exceeding 300 cm³ (8506305000) — a distinction that reflects the range from small button cells to larger industrial units. Japan leads US import supply, reflecting its established precision battery manufacturing sector. Importers should be aware that mercury-containing batteries face significant state-level restrictions and federal EPA reporting obligations under the Mercury-Containing and Rechargeable Battery Management Act, which affects both import planning and downstream distribution.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Yes. The Mercury-Containing and Rechargeable Battery Management Act (Battery Act) restricts the sale of certain mercury-containing batteries and imposes labeling and collection requirements. Additionally, EPA regulations under RCRA may apply to mercury-containing waste streams. Importers should confirm that the batteries comply with applicable federal and state mercury restrictions before entry, as some formats have been effectively phased out of the US consumer market.
Mercuric oxide cells remain in use for specialized military, aerospace, and medical applications where their flat discharge profile, high energy density, and stable voltage under varying temperatures are operationally critical and where no equivalent alternative chemistry has been qualified. These niche end-uses, rather than consumer electronics, account for most current import volume under this heading.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | -- | $16K | +$16K |
| UNITED KINGDOM | -- | $10K | +$10K |
| VENEZUELA | -- | $8K | +$8K |
| CANADA | -- | $3K | +$3K |
| ECUADOR | -- | -- | -- |
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share |
|---|---|---|---|---|
| 8506301000 | PRIMARY BATTERIES LT= 300 CM3, MERCURIC OXIDE | $0 | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8506305000 | PRIMARY BATTERIES GT 300 CM3, MERCURIC OXIDE | $31K |
| 8506301000 | PRIMARY BATTERIES LT= 300 CM3, MERCURIC OXIDE | $6K |
MACH FOR RECP/CONVR/TRANS/REGN OF VOICE/IMAGE/DATA
HS 851762
SOLID-STATE NON-VOL SEMICONDUCTOR STORAGE DEVICES
HS 852351
SMARTPHONES
HS 851713
PROCESSORS AND CONTROLLERS, ELECTRONIC INTEG CIRCT
HS 854231
CONTROLS ETC W ELECT APPR F ELECT CONT NOV 1000 V
HS 853710
STATIC CONVERTERS; ADP POWER SUPPLIES
HS 850440
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | -- | $13K | +$13K |
| California | -- | $13K | +$13K |
| Florida | -- | $11K | +$11K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | -- | $10K | +$10K |
| CLEVELAND, OH | -- | $10K | +$10K |
| PORT EVERGLADES, FL | -- | $8K | +$8K |