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Official data Source: US Census Bureau international trade data Data through August 2026 · updated monthly

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HS 8506.30

Primary cells and primary batteries, mercuric oxide

In short

  • The US imported $335K of this product over the 12 months to August 2026, up 71% on the year before.
  • China is the largest supplier, with 100.0% of US imports.
  • Duty paid averaged 40.2% of the value of imports in August 2026.
  • Japan is gaining share: 66.6% over the last 12 months, up from 0.0%.
  • US exports were $365K over the last 12 months; the largest market is Mexico, with 78.7%.

US imports, Aug 2026

$23K

Last 12 months

$335K

↑ +71% vs the 12 months before

Average duty paid

40.2%

Top supplier

China

100.0% of US imports

US imports by month

The last 13 months, so the same month a year ago is on the left. August 2026 is highlighted.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAug
Show the numbers
MonthUS imports
August 2025$0
September 2025$0
October 2025$0
November 2025$3K
December 2025$223K
January 2026$0
February 2026$0
March 2026$64K
April 2026$0
May 2026$23K
June 2026$0
July 2026$0
August 2026$23K

What changed

  • US imports were $23K in August 2026.
  • Over the 12 months to August 2026 they totalled $335K, up 71% on the 12 months before.
  • Biggest moves in market share since July 2026: China up from 0.0% to 100.0%.

US trade by year

US imports were $335K in the 12 months to Aug 2026, down 18% on the 12 months to Aug 2017. US exports were $365K, down 87%. In January 2022 the HS 2022 revision moved some goods between this code and 8549.21, 8549.29, 8549.31 and 3 more, so part of a change across the dashed line can be the revision.

2017201820192020202120222023202420252026HS 2022
Show the numbers
PeriodUS imports
12 months to Aug 2017$409K
12 months to Aug 2018$857K
12 months to Aug 2019$720K
12 months to Aug 2020$456K
12 months to Aug 2021$654K
12 months to Aug 2022$1.2M
12 months to Aug 2023$628K
12 months to Aug 2024$58K
12 months to Aug 2025$196K
12 months to Aug 2026$335K
  • Japan
  • China
  • Hungary
  • All countries
Share of US imports
Show the numbers
PeriodJapanChinaHungary
12 months to Aug 20172.7%95.7%0.0%
12 months to Aug 20180.0%81.9%0.0%
12 months to Aug 20190.0%90.3%0.0%
12 months to Aug 20200.6%91.6%0.0%
12 months to Aug 20211.5%81.6%0.0%
12 months to Aug 20220.6%92.5%0.0%
12 months to Aug 20230.8%84.6%0.0%
12 months to Aug 20246.9%60.1%0.0%
12 months to Aug 20250.0%98.1%0.0%
12 months to Aug 202666.6%32.6%0.9%
Duty paid, % of value
Show the numbers
PeriodJapanChinaHungaryAll countries
12 months to Aug 20172.7%2.6%n/a2.6%
12 months to Aug 2018n/a2.7%n/a2.7%
12 months to Aug 2019n/a14.8%n/a13.5%
12 months to Aug 20202.7%27.7%n/a25.6%
12 months to Aug 20212.7%26.5%n/a22.1%
12 months to Aug 20222.7%27.5%n/a25.6%
12 months to Aug 20232.7%27.7%n/a23.7%
12 months to Aug 20242.7%27.7%n/a17.5%
12 months to Aug 2025n/a49.6%n/a48.7%
12 months to Aug 202612.7%38.2%15.0%21.0%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$335K+71%21.0%−27.7 pts$365K+38%
12 months to Aug 2025$196K+236%48.7%+31.2 pts$265K−35%
12 months to Aug 2024$58K−91%17.5%−6.2 pts$405K+48%
12 months to Aug 2023$628K−47%23.7%−1.9 pts$274K−42%
12 months to Aug 2022HS 2022 revision$1.2M+81%25.6%+3.5 pts$471K+47%
12 months to Aug 2021$654K+43%22.1%−3.5 pts$321K−36%
12 months to Aug 2020$456K−37%25.6%+12.2 pts$500K−54%
12 months to Aug 2019$720K−16%13.5%+10.8 pts$1.1M−81%
12 months to Aug 2018$857K+110%2.7%0.0 pts$5.7M+99%
12 months to Aug 2017$409K2.6%$2.9M

Who supplies the US

August 2026. Small figures under each value are the change from August 2025.

CountryUS importsShareAverage priceDuty paidLast 13 months
China$23K100.0%new$68.73 each40.2%
All countries$23K100.0%$68.73 each40.2%

The 3 largest suppliers had 100.0% of US imports over the last 12 months.

How the market is shifting

Japan gained the most share: 66.6% of US imports over the last 12 months, up from 0.0% in the 12 months before. China lost the most: 32.6%, down from 98.1%. The charts show September 2024 to August 2026 for the 3 largest suppliers over the last 12 months.

  • Japan
  • China
  • Hungary
  • All countries
Share of US imports
Show the numbers
MonthJapanChinaHungary
September 2024n/an/an/a
October 2024n/an/an/a
November 2024n/an/an/a
December 20240.0%100.0%0.0%
January 20250.0%100.0%0.0%
February 20250.0%100.0%0.0%
March 20250.0%0.0%0.0%
April 2025n/an/an/a
May 20250.0%100.0%0.0%
June 20250.0%100.0%0.0%
July 20250.0%100.0%0.0%
August 2025n/an/an/a
September 2025n/an/an/a
October 2025n/an/an/a
November 20250.0%0.0%100.0%
December 2025100.0%0.0%0.0%
January 2026n/an/an/a
February 2026n/an/an/a
March 20260.0%100.0%0.0%
April 2026n/an/an/a
May 20260.0%100.0%0.0%
June 2026n/an/an/a
July 2026n/an/an/a
August 20260.0%100.0%0.0%
Duty paid, % of value
Show the numbers
MonthJapanChinaHungaryAll countries
September 2024n/an/an/an/a
October 2024n/an/an/an/a
November 2024n/an/an/an/a
December 2024n/a0.0%n/a0.0%
January 2025n/a27.7%n/a27.7%
February 2025n/a19.1%n/a19.1%
March 2025n/an/an/a2.7%
April 2025n/an/an/an/a
May 2025n/a47.7%n/a47.7%
June 2025n/a57.7%n/a57.7%
July 2025n/a57.7%n/a57.7%
August 2025n/an/an/an/a
September 2025n/an/an/an/a
October 2025n/an/an/an/a
November 2025n/an/a15.0%15.0%
December 202512.7%n/an/a12.7%
January 2026n/an/an/an/a
February 2026n/an/an/an/a
March 2026n/a37.7%n/a37.7%
April 2026n/an/an/an/a
May 2026n/a37.7%n/a37.7%
June 2026n/an/an/an/a
July 2026n/an/an/an/a
August 2026n/a40.2%n/a40.2%

Where it enters the US

Main ports of entry over the 12 months to August 2026: US imports and share.

  1. New Orleans, LA$223K · 66.6%
  2. Baltimore, MD$87K · 25.8%
  3. Newark, NJ$23K · 6.8%
  4. Houston, TX$3K · 0.9%

Where US exports go

US exports were $6K in August 2026, down 70% from August 2025, and $365K over the last 12 months, up 38% on the 12 months before. Fastest-growing market with 3% or more of US exports: Mexico, up 425%.

MarketLast 12 monthsSharevs 12 months before
Mexico$287K78.7%+425%
Ecuador$22K6.1%new
United Kingdom$15K4.2%−84%
Bolivia$10K2.7%new
Venezuela$8K2.2%new
Costa Rica$7K1.9%new
Nicaragua$5K1.3%new
Bahamas$4K1.2%new
Other countries (2)$6K1.8%new
All countries$365K100.0%+38%

Markets abroad

Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 85 have reported 2025 so far.

MarketImportsvs year beforeFrom the USUS share
Egypt$892Kin 2025−50%$5K0.6%
Belgium$834Kin 2025−48%$00.0%
Chile$701Kin 2025−20%$7090.1%
Greece$460Kin 2025+28%$00.0%
Dominican Republic$290Kin 2025−77%$178K61.4%
Switzerland$286Kin 2025+378%$00.0%
Kuwait$248Kin 2025−18%$00.0%
Norway$245Kin 2025−63%$153K62.7%

The biggest market outside the US is Egypt, which imported $892K of this product in 2025, 0.6% of that from the US.

The US supplies 61.4% of imports into the Dominican Republic and 62.7% into Norway, but under 10% into Egypt, Belgium and Chile.

Other products under heading 8506: primary cells and primary batteries; parts thereof. US trade over the 12 months to August 2026.

ProductUS importsUS exports
Primary cells and primary batteries, lithiumHS 8506.50$347.8M$556.6M
Primary cells and primary batteries, manganese dioxideHS 8506.10$550.8M$169.8M
Primary cells and primary batteries, not elsewhere specifiedHS 8506.80$34.7M$96.5M
Primary cells and primary batteries, silver oxideHS 8506.40$83.1M$8.0M
Parts of primary cells and primary batteriesHS 8506.90$18.4M$32.7M
Primary cells and primary batteries, air-zincHS 8506.60$23.9M$6.9M
About these figures
  • Source: US Census Bureau international trade data, not seasonally adjusted, in US dollars. Retrieved November 3, 2026.
  • US imports are general imports at customs value, which excludes freight and insurance. Exports are at free-alongside-ship value.
  • Average price is customs value divided by quantity (number of items), across all of the product's 10-digit lines.
  • Duty paid is the duty Census calculates on each country's imports for consumption, as a share of their value. It moves with tariff changes, exemptions and the mix of goods within the product.
  • Markets abroad are each country's imports as it reports them to UN Comtrade, in US dollars, usually including freight and insurance. Countries report a year or more late and in their own edition of the HS codes, so one still on an older edition is missing for codes that changed in 2022.
  • Census revises recent months, so figures can change slightly. These are estimates for research and planning, not customs or legal advice.

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