U.S. imports of Parts of Electric Storage Batteries, Including Separators (HS 850790) totaled $354.0M in August 2026, imported from 51 countries.
Importers of Parts of Electric Storage Batteries, Including Separators paid $43.6M in duties in August 2026, an average duty rate of 12.46% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Parts of Electric Storage Batteries, Including Separators imports of $354.0M in August 2026 ran 21% above the year-to-date monthly average of $293.5M.
Last updated: August 2026 dataBattery separators, electrode plates, cases, and other components for electric storage batteries are classified here, with the US schedule drawing a key line between lead-acid battery parts (8507904000) and parts for all other battery chemistries (8507908000) — a distinction that affects both duty rates and Section 301 exposure for Chinese-origin goods. China is the dominant supplier, with South Korea and Mexico also significant sources; South Korean and Mexican parts may benefit from preferential tariff treatment under KORUS and USMCA, respectively. Importers assembling battery packs domestically rely heavily on this heading for cell-level components and separator films.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
4.0K import shipments a month
HTS line 8507904000 covers parts specifically for lead-acid storage batteries, such as plates, grids, and separators designed for that chemistry. Line 8507908000 captures parts for all other battery types, including lithium-ion, nickel-metal hydride, and nickel-cadmium. The distinction matters because duty rates and Section 301 applicability can differ between the two lines.
Separators that are specifically designed and presented as parts of electric storage batteries classify under 8507.90. However, separator material sold in bulk rolls or not yet cut to shape may be classifiable under plastics or textile headings depending on its form and presentation. A binding ruling from CBP is advisable when the product is not clearly finished battery-specific.
Subheading 2 of 7 in heading 8507
Subheading 850790 · $354.0M of $2.0B
ImportsExports
Imports
$354.0MYoY · free account
Exports
$87.6MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $3.0B of Parts of Electric Storage Batteries, Including Separators and exported $673.8M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 850790 — Parts of Electric Storage Batteries, Including Separators, so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8507908000 | Storage Battery Parts (Except Lead-Acid Type) | $327.7M | 12.61% | 53.55% | $41.3M |
| 8507904000 | Lead-Acid Storage Battery Parts | $22.1M | 10.13% | 67.08% | $2.2M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8507908000 | Storage Battery Parts (Except Lead-Acid Type) | $77.2M |
| 8507904000 | Lead-Acid Storage Battery Parts | $10.4M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
South Korea and China together supply 73% of it. China pays 38.7% duty; Mexico 0.1%.
customs district
destination
entry
rate provision · imports
43.2% enters free of duty; duty collected equals 12.46% of imports for consumption.